Bug 1543016 Comment 6 Edit History

Note: The actual edited comment in the bug view page will always show the original commenter’s name and original timestamp.

(In reply to Joel Maher ( :jmaher ) (UTC-4) from comment #5)

> that would be a much larger change, we can file a bug or make this part of that, but I suspect it will be a wontfix or treated low priority.  There are a lot of moving parts to consider in making that happen.  How is this a problem now and wasn't a problem before?

We adapted to the old problems on the fly. For example, it's understandable why we receive **OPT**-like measurements from shippable-configured platforms.
But the variation from this case brought some extra confusion for other people reading the dashboards: the fact that we got **OPT**-like measurements *(which are actually PGO)* originating from PGO-enabled platforms.
(In reply to Joel Maher ( :jmaher ) (UTC-4) from comment #5)

> that would be a much larger change, we can file a bug or make this part of that, but I suspect it will be a wontfix or treated low priority.  There are a lot of moving parts to consider in making that happen.  How is this a problem now and wasn't a problem before?

We adapted to the old problems on the fly. For example, it's understandable why we receive **OPT**-like measurements from shippable-configured platforms.
But the variation from this case brought some extra confusion for other people reading the dashboards: the fact that we got **OPT**-like measurements *(which are actually PGO)* originating from PGO-enabled platforms. It's an ambiguous situation and a reader wouldn't know which signature part to trust: the build config or the platform name?
(In reply to Joel Maher ( :jmaher ) (UTC-4) from comment #5)

> that would be a much larger change, we can file a bug or make this part of that, but I suspect it will be a wontfix or treated low priority.  There are a lot of moving parts to consider in making that happen.  How is this a problem now and wasn't a problem before?

We adapted to the old problems on the fly. For example, it's understandable why we receive **OPT**-like measurements from shippable-configured platforms.
But the variation from this case brought some extra confusion for other people reading the dashboards: the fact that we got **OPT**-like measurements *(which are actually PGO)* originating from PGO-enabled platforms. It's an ambiguous situation and a reader wouldn't know which signature part to trust: the build config or the platform name?

Perfherder has detected a talos performance regression from push [05ac29094b09d93fa530a55af7e29ff389353306](https://hg.mozilla.org/integration/autoland/pushloghtml?changeset=05ac29094b09d93fa530a55af7e29ff389353306). As author of one of the patches included in that push, we need your help to address this regression.

Regressions:

|  | test | subtest | platform |  |  |
|--|--|--|--|--|--| 
| 5% | perf_reftest_singletons | id-getter-4.html | windows10-64-shippable-qr | e10s stylo | 449.85 -> 472.94 |
| 5% | perf_reftest_singletons | id-getter-5.html | windows10-64-shippable-qr | e10s stylo | 449.57 -> 472.48 |
| 5% | perf_reftest_singletons | id-getter-4.html | linux64-shippable | e10s stylo | 372.43 -> 391.39 |
| 5% | perf_reftest_singletons | id-getter-6.html | windows10-64-shippable-qr | e10s stylo | 449.90 -> 472.52 |

Improvements:

|  | test | subtest | platform |  |  |
|--|--|--|--|--|--|
| 47% | perf_reftest_singletons | getElementById-1.html | windows10-64-shippable-qr | e10s stylo | 107.94 -> 57.56 |
| 45% | perf_reftest_singletons | getElementById-1.html | windows7-32-shippable | e10s stylo | 109.29 -> 59.60 |
| 45% | perf_reftest_singletons | getElementById-1.html | windows10-64-shippable | e10s stylo | 105.75 -> 58.48 |
| 42% | perf_reftest_singletons | getElementById-1.html | macosx1014-64-shippable | e10s stylo | 100.85 -> 58.98 |
| 41% | perf_reftest_singletons | getElementById-1.html | linux64-shippable | e10s stylo | 94.77 -> 56.10 |
| 41% | perf_reftest_singletons | getElementById-1.html | linux64-shippable-qr | e10s stylo | 98.22 -> 58.41 |
| 12% | dromaeo_dom |  | linux64-shippable | e10s stylo | 1,887.73 -> 2,117.95 |


Details of the alert can be found in the [alert summary](http://localhost:5000/perf.html#/alerts?id=27129), including links to graphs and comparisons for each of the affected tests. Please follow our [guide to handling regression bugs](https://wiki.mozilla.org/TestEngineering/Performance/Handling_regression_bugs) and **let us know your plans within 3 business days, or the offending patch(es) will be backed out** in accordance with our [regression policy](https://www.mozilla.org/en-US/about/governance/policies/regressions/).

For more information on performance sheriffing please see our [FAQ](https://wiki.mozilla.org/TestEngineering/Performance/FAQ).
(In reply to Joel Maher ( :jmaher ) (UTC-4) from comment #5)

> that would be a much larger change, we can file a bug or make this part of that, but I suspect it will be a wontfix or treated low priority.  There are a lot of moving parts to consider in making that happen.  How is this a problem now and wasn't a problem before?

We adapted to the old problems on the fly. For example, it's understandable why we receive **OPT**-like measurements from shippable-configured platforms.
But the variation from this case brought some extra confusion for other people reading the dashboards: the fact that we got **OPT**-like measurements *(which are actually PGO)* originating from PGO-enabled platforms. It's an ambiguous situation and a reader wouldn't know which signature part to trust: the build config or the platform name?

Perfherder has detected a talos performance regression from push [05ac29094b09d93fa530a55af7e29ff389353306](https://hg.mozilla.org/integration/autoland/pushloghtml?changeset=05ac29094b09d93fa530a55af7e29ff389353306). As author of one of the patches included in that push, we need your help to address this regression.
(In reply to Joel Maher ( :jmaher ) (UTC-4) from comment #5)

> that would be a much larger change, we can file a bug or make this part of that, but I suspect it will be a wontfix or treated low priority.  There are a lot of moving parts to consider in making that happen.  How is this a problem now and wasn't a problem before?

We adapted to the old problems on the fly. For example, it's understandable why we receive **OPT**-like measurements from shippable-configured platforms.
But the variation from this case brought some extra confusion for other people reading the dashboards: the fact that we got **OPT**-like measurements *(which are actually PGO)* originating from PGO-enabled platforms. It's an ambiguous situation and a reader wouldn't know which signature part to trust: the build config or the platform name?

Perfherder has detected a talos performance regression from push [05ac29094b09d93fa530a55af7e29ff389353306](https://hg.mozilla.org/integration/autoland/pushloghtml?changeset=05ac29094b09d93fa530a55af7e29ff389353306). As author of one of the patches included in that push, we need your help to address this regression.

Perfherder has detected a talos performance regression from push [05ac29094b09d93fa530a55af7e29ff389353306](https://hg.mozilla.org/integration/autoland/pushloghtml?changeset=05ac29094b09d93fa530a55af7e29ff389353306). As author of one of the patches included in that push, we need your help to address this regression.

Regressions:

| **Ratio** | **Suite** | **Test** | **Platform** | **Options** | **Absolute values (old vs new)**| 
|--|--|--|--|--|--| 
| 6% | perf_reftest_singletons | id-getter-1.html | linux64-shippable | e10s stylo | 371.20 -> 392.47 |
| 5% | perf_reftest_singletons | id-getter-4.html | windows10-64-shippable-qr | e10s stylo | 449.85 -> 472.94 |
| 5% | perf_reftest_singletons | id-getter-5.html | windows10-64-shippable-qr | e10s stylo | 449.57 -> 472.48 |
| 5% | perf_reftest_singletons | id-getter-4.html | linux64-shippable | e10s stylo | 372.43 -> 391.39 |
| 5% | perf_reftest_singletons | id-getter-6.html | windows10-64-shippable-qr | e10s stylo | 449.90 -> 472.52 |


Improvements:

| **Ratio** | **Suite** | **Test** | **Platform** | **Options** | **Absolute values (old vs new)**| 
|--|--|--|--|--|--| 
| 47% | perf_reftest_singletons | getElementById-1.html | windows10-64-shippable-qr | e10s stylo | 107.94 -> 57.56 |
| 45% | perf_reftest_singletons | getElementById-1.html | windows7-32-shippable | e10s stylo | 109.29 -> 59.60 |
| 45% | perf_reftest_singletons | getElementById-1.html | windows10-64-shippable | e10s stylo | 105.75 -> 58.48 |
| 42% | perf_reftest_singletons | getElementById-1.html | macosx1014-64-shippable | e10s stylo | 100.85 -> 58.98 |
| 41% | perf_reftest_singletons | getElementById-1.html | linux64-shippable | e10s stylo | 94.77 -> 56.10 |
| 41% | perf_reftest_singletons | getElementById-1.html | linux64-shippable-qr | e10s stylo | 98.22 -> 58.41 |
| 12% | dromaeo_dom |  | linux64-shippable | e10s stylo | 1,887.73 -> 2,117.95 |


Details of the alert can be found in the [alert summary](http://localhost:5000/perf.html#/alerts?id=27129), including links to graphs and comparisons for each of the affected tests. Please follow our [guide to handling regression bugs](https://wiki.mozilla.org/TestEngineering/Performance/Handling_regression_bugs) and **let us know your plans within 3 business days, or the offending patch(es) will be backed out** in accordance with our [regression policy](https://www.mozilla.org/en-US/about/governance/policies/regressions/).

For more information on performance sheriffing please see our [FAQ](https://wiki.mozilla.org/TestEngineering/Performance/FAQ).
(In reply to Joel Maher ( :jmaher ) (UTC-4) from comment #5)

> that would be a much larger change, we can file a bug or make this part of that, but I suspect it will be a wontfix or treated low priority.  There are a lot of moving parts to consider in making that happen.  How is this a problem now and wasn't a problem before?

We adapted to the old problems on the fly. For example, it's understandable why we receive **OPT**-like measurements from shippable-configured platforms.
But the variation from this case brought some extra confusion for other people reading the dashboards: the fact that we got **OPT**-like measurements *(which are actually PGO)* originating from PGO-enabled platforms. It's an ambiguous situation and a reader wouldn't know which signature part to trust: the build config or the platform name?

Perfherder has detected a talos performance regression from push [05ac29094b09d93fa530a55af7e29ff389353306](https://hg.mozilla.org/integration/autoland/pushloghtml?changeset=05ac29094b09d93fa530a55af7e29ff389353306). As author of one of the patches included in that push, we need your help to address this regression.

Perfherder has detected a talos performance regression from push [05ac29094b09d93fa530a55af7e29ff389353306](https://hg.mozilla.org/integration/autoland/pushloghtml?changeset=05ac29094b09d93fa530a55af7e29ff389353306). As author of one of the patches included in that push, we need your help to address this regression.

Regressions:

| **Ratio** | **Suite** | **Test** | **Platform** | **Options** | **Absolute values (old vs new)**| 
|--|--|--|--|--|--| 
| 6% | perf_reftest_singletons | id-getter-1.html | linux64-shippable | e10s stylo | 371.20 -> 392.47 |
| 5% | perf_reftest_singletons | id-getter-4.html | windows10-64-shippable-qr | e10s stylo | 449.85 -> 472.94 |
| 5% | perf_reftest_singletons | id-getter-5.html | windows10-64-shippable-qr | e10s stylo | 449.57 -> 472.48 |
| 5% | perf_reftest_singletons | id-getter-4.html | linux64-shippable | e10s stylo | 372.43 -> 391.39 |
| 5% | perf_reftest_singletons | id-getter-6.html | windows10-64-shippable-qr | e10s stylo | 449.90 -> 472.52 |

 <br />
Improvements:

| **Ratio** | **Suite** | **Test** | **Platform** | **Options** | **Absolute values (old vs new)**| 
|--|--|--|--|--|--| 
| 47% | perf_reftest_singletons | getElementById-1.html | windows10-64-shippable-qr | e10s stylo | 107.94 -> 57.56 |
| 45% | perf_reftest_singletons | getElementById-1.html | windows7-32-shippable | e10s stylo | 109.29 -> 59.60 |
| 45% | perf_reftest_singletons | getElementById-1.html | windows10-64-shippable | e10s stylo | 105.75 -> 58.48 |
| 42% | perf_reftest_singletons | getElementById-1.html | macosx1014-64-shippable | e10s stylo | 100.85 -> 58.98 |
| 41% | perf_reftest_singletons | getElementById-1.html | linux64-shippable | e10s stylo | 94.77 -> 56.10 |
| 41% | perf_reftest_singletons | getElementById-1.html | linux64-shippable-qr | e10s stylo | 98.22 -> 58.41 |
| 12% | dromaeo_dom |  | linux64-shippable | e10s stylo | 1,887.73 -> 2,117.95 |


Details of the alert can be found in the [alert summary](http://localhost:5000/perf.html#/alerts?id=27129), including links to graphs and comparisons for each of the affected tests. Please follow our [guide to handling regression bugs](https://wiki.mozilla.org/TestEngineering/Performance/Handling_regression_bugs) and **let us know your plans within 3 business days, or the offending patch(es) will be backed out** in accordance with our [regression policy](https://www.mozilla.org/en-US/about/governance/policies/regressions/).

For more information on performance sheriffing please see our [FAQ](https://wiki.mozilla.org/TestEngineering/Performance/FAQ).
(In reply to Joel Maher ( :jmaher ) (UTC-4) from comment #5)

> that would be a much larger change, we can file a bug or make this part of that, but I suspect it will be a wontfix or treated low priority.  There are a lot of moving parts to consider in making that happen.  How is this a problem now and wasn't a problem before?

We adapted to the old problems on the fly. For example, it's understandable why we receive **OPT**-like measurements from shippable-configured platforms.
But the variation from this case brought some extra confusion for other people reading the dashboards: the fact that we got **OPT**-like measurements *(which are actually PGO)* originating from PGO-enabled platforms. It's an ambiguous situation and a reader wouldn't know which signature part to trust: the build config or the platform name?

Perfherder has detected a talos performance regression from push [05ac29094b09d93fa530a55af7e29ff389353306](https://hg.mozilla.org/integration/autoland/pushloghtml?changeset=05ac29094b09d93fa530a55af7e29ff389353306). As author of one of the patches included in that push, we need your help to address this regression.

Perfherder has detected a talos performance regression from push [05ac29094b09d93fa530a55af7e29ff389353306](https://hg.mozilla.org/integration/autoland/pushloghtml?changeset=05ac29094b09d93fa530a55af7e29ff389353306). As author of one of the patches included in that push, we need your help to address this regression.

Regressions:

| **Ratio** | **Suite** | **Test** | **Platform** | **Options** | **Absolute values (old vs new)**| 
|--|--|--|--|--|--| 
| 6% | perf_reftest_singletons | id-getter-1.html | linux64-shippable | e10s stylo | 371.20 -> 392.47 |
| 5% | perf_reftest_singletons | id-getter-4.html | windows10-64-shippable-qr | e10s stylo | 449.85 -> 472.94 |
| 5% | perf_reftest_singletons | id-getter-5.html | windows10-64-shippable-qr | e10s stylo | 449.57 -> 472.48 |
| 5% | perf_reftest_singletons | id-getter-4.html | linux64-shippable | e10s stylo | 372.43 -> 391.39 |
| 5% | perf_reftest_singletons | id-getter-6.html | windows10-64-shippable-qr | e10s stylo | 449.90 -> 472.52 |

 
Improvements:

| **Ratio** | **Suite** | **Test** | **Platform** | **Options** | **Absolute values (old vs new)**| 
|--|--|--|--|--|--| 
| 47% | perf_reftest_singletons | getElementById-1.html | windows10-64-shippable-qr | e10s stylo | 107.94 -> 57.56 |
| 45% | perf_reftest_singletons | getElementById-1.html | windows7-32-shippable | e10s stylo | 109.29 -> 59.60 |
| 45% | perf_reftest_singletons | getElementById-1.html | windows10-64-shippable | e10s stylo | 105.75 -> 58.48 |
| 42% | perf_reftest_singletons | getElementById-1.html | macosx1014-64-shippable | e10s stylo | 100.85 -> 58.98 |
| 41% | perf_reftest_singletons | getElementById-1.html | linux64-shippable | e10s stylo | 94.77 -> 56.10 |
| 41% | perf_reftest_singletons | getElementById-1.html | linux64-shippable-qr | e10s stylo | 98.22 -> 58.41 |
| 12% | dromaeo_dom |  | linux64-shippable | e10s stylo | 1,887.73 -> 2,117.95 |


Details of the alert can be found in the [alert summary](http://localhost:5000/perf.html#/alerts?id=27129), including links to graphs and comparisons for each of the affected tests. Please follow our [guide to handling regression bugs](https://wiki.mozilla.org/TestEngineering/Performance/Handling_regression_bugs) and **let us know your plans within 3 business days, or the offending patch(es) will be backed out** in accordance with our [regression policy](https://www.mozilla.org/en-US/about/governance/policies/regressions/).

For more information on performance sheriffing please see our [FAQ](https://wiki.mozilla.org/TestEngineering/Performance/FAQ).
(In reply to Joel Maher ( :jmaher ) (UTC-4) from comment #5)

> that would be a much larger change, we can file a bug or make this part of that, but I suspect it will be a wontfix or treated low priority.  There are a lot of moving parts to consider in making that happen.  How is this a problem now and wasn't a problem before?

We adapted to the old problems on the fly. For example, it's understandable why we receive **OPT**-like measurements from shippable-configured platforms.
But the variation from this case brought some extra confusion for other people reading the dashboards: the fact that we got **OPT**-like measurements *(which are actually PGO)* originating from PGO-enabled platforms. It's an ambiguous situation and a reader wouldn't know which signature part to trust: the build config or the platform name?

Perfherder has detected a talos performance regression from push [05ac29094b09d93fa530a55af7e29ff389353306](https://hg.mozilla.org/integration/autoland/pushloghtml?changeset=05ac29094b09d93fa530a55af7e29ff389353306). As author of one of the patches included in that push, we need your help to address this regression.

Perfherder has detected a talos performance regression from push [05ac29094b09d93fa530a55af7e29ff389353306](https://hg.mozilla.org/integration/autoland/pushloghtml?changeset=05ac29094b09d93fa530a55af7e29ff389353306). As author of one of the patches included in that push, we need your help to address this regression.

Regressions:

| **Ratio** | **Suite** | **Test** | **Platform** | **Options** | **Absolute values (old vs new)**| 
|--|--|--|--|--|--| 
| 6% | perf_reftest_singletons | id-getter-1.html | linux64-shippable | e10s stylo | 371.20 -> 392.47 |
| 5% | perf_reftest_singletons | id-getter-4.html | windows10-64-shippable-qr | e10s stylo | 449.85 -> 472.94 |
| 5% | perf_reftest_singletons | id-getter-5.html | windows10-64-shippable-qr | e10s stylo | 449.57 -> 472.48 |
| 5% | perf_reftest_singletons | id-getter-4.html | linux64-shippable | e10s stylo | 372.43 -> 391.39 |
| 5% | perf_reftest_singletons | id-getter-6.html | windows10-64-shippable-qr | e10s stylo | 449.90 -> 472.52 |
⠀
⠀
Improvements:

| **Ratio** | **Suite** | **Test** | **Platform** | **Options** | **Absolute values (old vs new)**| 
|--|--|--|--|--|--| 
| 47% | perf_reftest_singletons | getElementById-1.html | windows10-64-shippable-qr | e10s stylo | 107.94 -> 57.56 |
| 45% | perf_reftest_singletons | getElementById-1.html | windows7-32-shippable | e10s stylo | 109.29 -> 59.60 |
| 45% | perf_reftest_singletons | getElementById-1.html | windows10-64-shippable | e10s stylo | 105.75 -> 58.48 |
| 42% | perf_reftest_singletons | getElementById-1.html | macosx1014-64-shippable | e10s stylo | 100.85 -> 58.98 |
| 41% | perf_reftest_singletons | getElementById-1.html | linux64-shippable | e10s stylo | 94.77 -> 56.10 |
| 41% | perf_reftest_singletons | getElementById-1.html | linux64-shippable-qr | e10s stylo | 98.22 -> 58.41 |
| 12% | dromaeo_dom |  | linux64-shippable | e10s stylo | 1,887.73 -> 2,117.95 |


Details of the alert can be found in the [alert summary](http://localhost:5000/perf.html#/alerts?id=27129), including links to graphs and comparisons for each of the affected tests. Please follow our [guide to handling regression bugs](https://wiki.mozilla.org/TestEngineering/Performance/Handling_regression_bugs) and **let us know your plans within 3 business days, or the offending patch(es) will be backed out** in accordance with our [regression policy](https://www.mozilla.org/en-US/about/governance/policies/regressions/).

For more information on performance sheriffing please see our [FAQ](https://wiki.mozilla.org/TestEngineering/Performance/FAQ).
(In reply to Joel Maher ( :jmaher ) (UTC-4) from comment #5)

> that would be a much larger change, we can file a bug or make this part of that, but I suspect it will be a wontfix or treated low priority.  There are a lot of moving parts to consider in making that happen.  How is this a problem now and wasn't a problem before?

We adapted to the old problems on the fly. For example, it's understandable why we receive **OPT**-like measurements from shippable-configured platforms.
But the variation from this case brought some extra confusion for other people reading the dashboards: the fact that we got **OPT**-like measurements *(which are actually PGO)* originating from PGO-enabled platforms. It's an ambiguous situation and a reader wouldn't know which signature part to trust: the build config or the platform name?

Perfherder has detected a talos performance regression from push [05ac29094b09d93fa530a55af7e29ff389353306](https://hg.mozilla.org/integration/autoland/pushloghtml?changeset=05ac29094b09d93fa530a55af7e29ff389353306). As author of one of the patches included in that push, we need your help to address this regression.

Perfherder has detected a talos performance regression from push [05ac29094b09d93fa530a55af7e29ff389353306](https://hg.mozilla.org/integration/autoland/pushloghtml?changeset=05ac29094b09d93fa530a55af7e29ff389353306). As author of one of the patches included in that push, we need your help to address this regression.

Regressions:

| **Ratio** | **Suite** | **Test** | **Platform** | **Options** | **Absolute values (old vs new)**| 
|--|--|--|--|--|--| 
| 6% | perf_reftest_singletons | id-getter-1.html | linux64-shippable | e10s stylo | 371.20 -> 392.47 |
| 5% | perf_reftest_singletons | id-getter-4.html | windows10-64-shippable-qr | e10s stylo | 449.85 -> 472.94 |
| 5% | perf_reftest_singletons | id-getter-5.html | windows10-64-shippable-qr | e10s stylo | 449.57 -> 472.48 |
| 5% | perf_reftest_singletons | id-getter-4.html | linux64-shippable | e10s stylo | 372.43 -> 391.39 |
| 5% | perf_reftest_singletons | id-getter-6.html | windows10-64-shippable-qr | e10s stylo | 449.90 -> 472.52 |

Improvements:

| **Ratio** | **Suite** | **Test** | **Platform** | **Options** | **Absolute values (old vs new)**| 
|--|--|--|--|--|--| 
| 47% | perf_reftest_singletons | getElementById-1.html | windows10-64-shippable-qr | e10s stylo | 107.94 -> 57.56 |
| 45% | perf_reftest_singletons | getElementById-1.html | windows7-32-shippable | e10s stylo | 109.29 -> 59.60 |
| 45% | perf_reftest_singletons | getElementById-1.html | windows10-64-shippable | e10s stylo | 105.75 -> 58.48 |
| 42% | perf_reftest_singletons | getElementById-1.html | macosx1014-64-shippable | e10s stylo | 100.85 -> 58.98 |
| 41% | perf_reftest_singletons | getElementById-1.html | linux64-shippable | e10s stylo | 94.77 -> 56.10 |
| 41% | perf_reftest_singletons | getElementById-1.html | linux64-shippable-qr | e10s stylo | 98.22 -> 58.41 |
| 12% | dromaeo_dom |  | linux64-shippable | e10s stylo | 1,887.73 -> 2,117.95 |


Details of the alert can be found in the [alert summary](http://localhost:5000/perf.html#/alerts?id=27129), including links to graphs and comparisons for each of the affected tests. Please follow our [guide to handling regression bugs](https://wiki.mozilla.org/TestEngineering/Performance/Handling_regression_bugs) and **let us know your plans within 3 business days, or the offending patch(es) will be backed out** in accordance with our [regression policy](https://www.mozilla.org/en-US/about/governance/policies/regressions/).

For more information on performance sheriffing please see our [FAQ](https://wiki.mozilla.org/TestEngineering/Performance/FAQ).
(In reply to Joel Maher ( :jmaher ) (UTC-4) from comment #5)

> that would be a much larger change, we can file a bug or make this part of that, but I suspect it will be a wontfix or treated low priority.  There are a lot of moving parts to consider in making that happen.  How is this a problem now and wasn't a problem before?

We adapted to the old problems on the fly. For example, it's understandable why we receive **OPT**-like measurements from shippable-configured platforms.
But the variation from this case brought some extra confusion for other people reading the dashboards: the fact that we got **OPT**-like measurements *(which are actually PGO)* originating from PGO-enabled platforms. It's an ambiguous situation and a reader wouldn't know which signature part to trust: the build config or the platform name?

Perfherder has detected a talos performance regression from push [05ac29094b09d93fa530a55af7e29ff389353306](https://hg.mozilla.org/integration/autoland/pushloghtml?changeset=05ac29094b09d93fa530a55af7e29ff389353306). As author of one of the patches included in that push, we need your help to address this regression.

Perfherder has detected a talos performance regression from push [05ac29094b09d93fa530a55af7e29ff389353306](https://hg.mozilla.org/integration/autoland/pushloghtml?changeset=05ac29094b09d93fa530a55af7e29ff389353306). As author of one of the patches included in that push, we need your help to address this regression.

Regressions:

| **Ratio** | **Suite** | **Test** | **Platform** | **Options** | **Absolute values (old vs new)**| 
|--|--|--|--|--|--| 
| 6% | perf_reftest_singletons | id-getter-1.html | linux64-shippable | e10s stylo | 371.20 -> 392.47 |
| 5% | perf_reftest_singletons | id-getter-4.html | windows10-64-shippable-qr | e10s stylo | 449.85 -> 472.94 |
| 5% | perf_reftest_singletons | id-getter-5.html | windows10-64-shippable-qr | e10s stylo | 449.57 -> 472.48 |
| 5% | perf_reftest_singletons | id-getter-4.html | linux64-shippable | e10s stylo | 372.43 -> 391.39 |
| 5% | perf_reftest_singletons | id-getter-6.html | windows10-64-shippable-qr | e10s stylo | 449.90 -> 472.52 |  <br />

Improvements:

| **Ratio** | **Suite** | **Test** | **Platform** | **Options** | **Absolute values (old vs new)**| 
|--|--|--|--|--|--| 
| 47% | perf_reftest_singletons | getElementById-1.html | windows10-64-shippable-qr | e10s stylo | 107.94 -> 57.56 |
| 45% | perf_reftest_singletons | getElementById-1.html | windows7-32-shippable | e10s stylo | 109.29 -> 59.60 |
| 45% | perf_reftest_singletons | getElementById-1.html | windows10-64-shippable | e10s stylo | 105.75 -> 58.48 |
| 42% | perf_reftest_singletons | getElementById-1.html | macosx1014-64-shippable | e10s stylo | 100.85 -> 58.98 |
| 41% | perf_reftest_singletons | getElementById-1.html | linux64-shippable | e10s stylo | 94.77 -> 56.10 |
| 41% | perf_reftest_singletons | getElementById-1.html | linux64-shippable-qr | e10s stylo | 98.22 -> 58.41 |
| 12% | dromaeo_dom |  | linux64-shippable | e10s stylo | 1,887.73 -> 2,117.95 |


Details of the alert can be found in the [alert summary](http://localhost:5000/perf.html#/alerts?id=27129), including links to graphs and comparisons for each of the affected tests. Please follow our [guide to handling regression bugs](https://wiki.mozilla.org/TestEngineering/Performance/Handling_regression_bugs) and **let us know your plans within 3 business days, or the offending patch(es) will be backed out** in accordance with our [regression policy](https://www.mozilla.org/en-US/about/governance/policies/regressions/).

For more information on performance sheriffing please see our [FAQ](https://wiki.mozilla.org/TestEngineering/Performance/FAQ).
(In reply to Joel Maher ( :jmaher ) (UTC-4) from comment #5)

> that would be a much larger change, we can file a bug or make this part of that, but I suspect it will be a wontfix or treated low priority.  There are a lot of moving parts to consider in making that happen.  How is this a problem now and wasn't a problem before?

We adapted to the old problems on the fly. For example, it's understandable why we receive **OPT**-like measurements from shippable-configured platforms.
But the variation from this case brought some extra confusion for other people reading the dashboards: the fact that we got **OPT**-like measurements *(which are actually PGO)* originating from PGO-enabled platforms. It's an ambiguous situation and a reader wouldn't know which signature part to trust: the build config or the platform name?

Perfherder has detected a talos performance regression from push [05ac29094b09d93fa530a55af7e29ff389353306](https://hg.mozilla.org/integration/autoland/pushloghtml?changeset=05ac29094b09d93fa530a55af7e29ff389353306). As author of one of the patches included in that push, we need your help to address this regression.

Perfherder has detected a talos performance regression from push [05ac29094b09d93fa530a55af7e29ff389353306](https://hg.mozilla.org/integration/autoland/pushloghtml?changeset=05ac29094b09d93fa530a55af7e29ff389353306). As author of one of the patches included in that push, we need your help to address this regression.

Regressions:

| **Ratio** | **Suite** | **Test** | **Platform** | **Options** | **Absolute values (old vs new)**| 
|--|--|--|--|--|--| 
| 6% | perf_reftest_singletons | id-getter-1.html | linux64-shippable | e10s stylo | 371.20 -> 392.47 |
| 5% | perf_reftest_singletons | id-getter-4.html | windows10-64-shippable-qr | e10s stylo | 449.85 -> 472.94 |
| 5% | perf_reftest_singletons | id-getter-5.html | windows10-64-shippable-qr | e10s stylo | 449.57 -> 472.48 |
| 5% | perf_reftest_singletons | id-getter-4.html | linux64-shippable | e10s stylo | 372.43 -> 391.39 |
| 5% | perf_reftest_singletons | id-getter-6.html | windows10-64-shippable-qr | e10s stylo | 449.90 -> 472.52 |  <br />

  <br />
Improvements:

| **Ratio** | **Suite** | **Test** | **Platform** | **Options** | **Absolute values (old vs new)**| 
|--|--|--|--|--|--| 
| 47% | perf_reftest_singletons | getElementById-1.html | windows10-64-shippable-qr | e10s stylo | 107.94 -> 57.56 |
| 45% | perf_reftest_singletons | getElementById-1.html | windows7-32-shippable | e10s stylo | 109.29 -> 59.60 |
| 45% | perf_reftest_singletons | getElementById-1.html | windows10-64-shippable | e10s stylo | 105.75 -> 58.48 |
| 42% | perf_reftest_singletons | getElementById-1.html | macosx1014-64-shippable | e10s stylo | 100.85 -> 58.98 |
| 41% | perf_reftest_singletons | getElementById-1.html | linux64-shippable | e10s stylo | 94.77 -> 56.10 |
| 41% | perf_reftest_singletons | getElementById-1.html | linux64-shippable-qr | e10s stylo | 98.22 -> 58.41 |
| 12% | dromaeo_dom |  | linux64-shippable | e10s stylo | 1,887.73 -> 2,117.95 |


Details of the alert can be found in the [alert summary](http://localhost:5000/perf.html#/alerts?id=27129), including links to graphs and comparisons for each of the affected tests. Please follow our [guide to handling regression bugs](https://wiki.mozilla.org/TestEngineering/Performance/Handling_regression_bugs) and **let us know your plans within 3 business days, or the offending patch(es) will be backed out** in accordance with our [regression policy](https://www.mozilla.org/en-US/about/governance/policies/regressions/).

For more information on performance sheriffing please see our [FAQ](https://wiki.mozilla.org/TestEngineering/Performance/FAQ).
(In reply to Joel Maher ( :jmaher ) (UTC-4) from comment #5)

> that would be a much larger change, we can file a bug or make this part of that, but I suspect it will be a wontfix or treated low priority.  There are a lot of moving parts to consider in making that happen.  How is this a problem now and wasn't a problem before?

We adapted to the old problems on the fly. For example, it's understandable why we receive **OPT**-like measurements from shippable-configured platforms.
But the variation from this case brought some extra confusion for other people reading the dashboards: the fact that we got **OPT**-like measurements *(which are actually PGO)* originating from PGO-enabled platforms. It's an ambiguous situation and a reader wouldn't know which signature part to trust: the build config or the platform name?

Perfherder has detected a talos performance regression from push [05ac29094b09d93fa530a55af7e29ff389353306](https://hg.mozilla.org/integration/autoland/pushloghtml?changeset=05ac29094b09d93fa530a55af7e29ff389353306). As author of one of the patches included in that push, we need your help to address this regression.

Perfherder has detected a talos performance regression from push [05ac29094b09d93fa530a55af7e29ff389353306](https://hg.mozilla.org/integration/autoland/pushloghtml?changeset=05ac29094b09d93fa530a55af7e29ff389353306). As author of one of the patches included in that push, we need your help to address this regression.

Regressions:

| **Ratio** | **Suite** | **Test** | **Platform** | **Options** | **Absolute values (old vs new)**| 
|--|--|--|--|--|--| 
| 6% | perf_reftest_singletons | id-getter-1.html | linux64-shippable | e10s stylo | 371.20 -> 392.47 |
| 5% | perf_reftest_singletons | id-getter-4.html | windows10-64-shippable-qr | e10s stylo | 449.85 -> 472.94 |
| 5% | perf_reftest_singletons | id-getter-5.html | windows10-64-shippable-qr | e10s stylo | 449.57 -> 472.48 |
| 5% | perf_reftest_singletons | id-getter-4.html | linux64-shippable | e10s stylo | 372.43 -> 391.39 |
| 5% | perf_reftest_singletons | id-getter-6.html | windows10-64-shippable-qr | e10s stylo | 449.90 -> 472.52 |  <br />

  <br />Improvements:

| **Ratio** | **Suite** | **Test** | **Platform** | **Options** | **Absolute values (old vs new)**| 
|--|--|--|--|--|--| 
| 47% | perf_reftest_singletons | getElementById-1.html | windows10-64-shippable-qr | e10s stylo | 107.94 -> 57.56 |
| 45% | perf_reftest_singletons | getElementById-1.html | windows7-32-shippable | e10s stylo | 109.29 -> 59.60 |
| 45% | perf_reftest_singletons | getElementById-1.html | windows10-64-shippable | e10s stylo | 105.75 -> 58.48 |
| 42% | perf_reftest_singletons | getElementById-1.html | macosx1014-64-shippable | e10s stylo | 100.85 -> 58.98 |
| 41% | perf_reftest_singletons | getElementById-1.html | linux64-shippable | e10s stylo | 94.77 -> 56.10 |
| 41% | perf_reftest_singletons | getElementById-1.html | linux64-shippable-qr | e10s stylo | 98.22 -> 58.41 |
| 12% | dromaeo_dom |  | linux64-shippable | e10s stylo | 1,887.73 -> 2,117.95 |


Details of the alert can be found in the [alert summary](http://localhost:5000/perf.html#/alerts?id=27129), including links to graphs and comparisons for each of the affected tests. Please follow our [guide to handling regression bugs](https://wiki.mozilla.org/TestEngineering/Performance/Handling_regression_bugs) and **let us know your plans within 3 business days, or the offending patch(es) will be backed out** in accordance with our [regression policy](https://www.mozilla.org/en-US/about/governance/policies/regressions/).

For more information on performance sheriffing please see our [FAQ](https://wiki.mozilla.org/TestEngineering/Performance/FAQ).
(In reply to Joel Maher ( :jmaher ) (UTC-4) from comment #5)

> that would be a much larger change, we can file a bug or make this part of that, but I suspect it will be a wontfix or treated low priority.  There are a lot of moving parts to consider in making that happen.  How is this a problem now and wasn't a problem before?

We adapted to the old problems on the fly. For example, it's understandable why we receive **OPT**-like measurements from shippable-configured platforms.
But the variation from this case brought some extra confusion for other people reading the dashboards: the fact that we got **OPT**-like measurements *(which are actually PGO)* originating from PGO-enabled platforms. It's an ambiguous situation and a reader wouldn't know which signature part to trust: the build config or the platform name?

Perfherder has detected a talos performance regression from push [05ac29094b09d93fa530a55af7e29ff389353306](https://hg.mozilla.org/integration/autoland/pushloghtml?changeset=05ac29094b09d93fa530a55af7e29ff389353306). As author of one of the patches included in that push, we need your help to address this regression.

Perfherder has detected a talos performance regression from push [05ac29094b09d93fa530a55af7e29ff389353306](https://hg.mozilla.org/integration/autoland/pushloghtml?changeset=05ac29094b09d93fa530a55af7e29ff389353306). As author of one of the patches included in that push, we need your help to address this regression.

Regressions:

| **Ratio** | **Suite** | **Test** | **Platform** | **Options** | **Absolute values (old vs new)**| 
|--|--|--|--|--|--| 
| 6% | perf_reftest_singletons | id-getter-1.html | linux64-shippable | e10s stylo | 371.20 -> 392.47 |
| 5% | perf_reftest_singletons | id-getter-4.html | windows10-64-shippable-qr | e10s stylo | 449.85 -> 472.94 |
| 5% | perf_reftest_singletons | id-getter-5.html | windows10-64-shippable-qr | e10s stylo | 449.57 -> 472.48 |
| 5% | perf_reftest_singletons | id-getter-4.html | linux64-shippable | e10s stylo | 372.43 -> 391.39 |
| 5% | perf_reftest_singletons | id-getter-6.html | windows10-64-shippable-qr | e10s stylo | 449.90 -> 472.52 |  <br />

<br />Improvements:

| **Ratio** | **Suite** | **Test** | **Platform** | **Options** | **Absolute values (old vs new)**| 
|--|--|--|--|--|--| 
| 47% | perf_reftest_singletons | getElementById-1.html | windows10-64-shippable-qr | e10s stylo | 107.94 -> 57.56 |
| 45% | perf_reftest_singletons | getElementById-1.html | windows7-32-shippable | e10s stylo | 109.29 -> 59.60 |
| 45% | perf_reftest_singletons | getElementById-1.html | windows10-64-shippable | e10s stylo | 105.75 -> 58.48 |
| 42% | perf_reftest_singletons | getElementById-1.html | macosx1014-64-shippable | e10s stylo | 100.85 -> 58.98 |
| 41% | perf_reftest_singletons | getElementById-1.html | linux64-shippable | e10s stylo | 94.77 -> 56.10 |
| 41% | perf_reftest_singletons | getElementById-1.html | linux64-shippable-qr | e10s stylo | 98.22 -> 58.41 |
| 12% | dromaeo_dom |  | linux64-shippable | e10s stylo | 1,887.73 -> 2,117.95 |


Details of the alert can be found in the [alert summary](http://localhost:5000/perf.html#/alerts?id=27129), including links to graphs and comparisons for each of the affected tests. Please follow our [guide to handling regression bugs](https://wiki.mozilla.org/TestEngineering/Performance/Handling_regression_bugs) and **let us know your plans within 3 business days, or the offending patch(es) will be backed out** in accordance with our [regression policy](https://www.mozilla.org/en-US/about/governance/policies/regressions/).

For more information on performance sheriffing please see our [FAQ](https://wiki.mozilla.org/TestEngineering/Performance/FAQ).
(In reply to Joel Maher ( :jmaher ) (UTC-4) from comment #5)

> that would be a much larger change, we can file a bug or make this part of that, but I suspect it will be a wontfix or treated low priority.  There are a lot of moving parts to consider in making that happen.  How is this a problem now and wasn't a problem before?

We adapted to the old problems on the fly. For example, it's understandable why we receive **OPT**-like measurements from shippable-configured platforms.
But the variation from this case brought some extra confusion for other people reading the dashboards: the fact that we got **OPT**-like measurements *(which are actually PGO)* originating from PGO-enabled platforms. It's an ambiguous situation and a reader wouldn't know which signature part to trust: the build config or the platform name?

Perfherder has detected a talos performance regression from push [05ac29094b09d93fa530a55af7e29ff389353306](https://hg.mozilla.org/integration/autoland/pushloghtml?changeset=05ac29094b09d93fa530a55af7e29ff389353306). As author of one of the patches included in that push, we need your help to address this regression.

Perfherder has detected a talos performance regression from push [05ac29094b09d93fa530a55af7e29ff389353306](https://hg.mozilla.org/integration/autoland/pushloghtml?changeset=05ac29094b09d93fa530a55af7e29ff389353306). As author of one of the patches included in that push, we need your help to address this regression.

Regressions:

| **Ratio** | **Suite** | **Test** | **Platform** | **Options** | **Absolute values (old vs new)**| 
|--|--|--|--|--|--| 
| 6% | perf_reftest_singletons | id-getter-1.html | linux64-shippable | e10s stylo | 371.20 -> 392.47 |
| 5% | perf_reftest_singletons | id-getter-4.html | windows10-64-shippable-qr | e10s stylo | 449.85 -> 472.94 |
| 5% | perf_reftest_singletons | id-getter-5.html | windows10-64-shippable-qr | e10s stylo | 449.57 -> 472.48 |
| 5% | perf_reftest_singletons | id-getter-4.html | linux64-shippable | e10s stylo | 372.43 -> 391.39 |
| 5% | perf_reftest_singletons | id-getter-6.html | windows10-64-shippable-qr | e10s stylo | 449.90 -> 472.52 |  <br />

<br /> Improvements:

| **Ratio** | **Suite** | **Test** | **Platform** | **Options** | **Absolute values (old vs new)**| 
|--|--|--|--|--|--| 
| 47% | perf_reftest_singletons | getElementById-1.html | windows10-64-shippable-qr | e10s stylo | 107.94 -> 57.56 |
| 45% | perf_reftest_singletons | getElementById-1.html | windows7-32-shippable | e10s stylo | 109.29 -> 59.60 |
| 45% | perf_reftest_singletons | getElementById-1.html | windows10-64-shippable | e10s stylo | 105.75 -> 58.48 |
| 42% | perf_reftest_singletons | getElementById-1.html | macosx1014-64-shippable | e10s stylo | 100.85 -> 58.98 |
| 41% | perf_reftest_singletons | getElementById-1.html | linux64-shippable | e10s stylo | 94.77 -> 56.10 |
| 41% | perf_reftest_singletons | getElementById-1.html | linux64-shippable-qr | e10s stylo | 98.22 -> 58.41 |
| 12% | dromaeo_dom |  | linux64-shippable | e10s stylo | 1,887.73 -> 2,117.95 |


Details of the alert can be found in the [alert summary](http://localhost:5000/perf.html#/alerts?id=27129), including links to graphs and comparisons for each of the affected tests. Please follow our [guide to handling regression bugs](https://wiki.mozilla.org/TestEngineering/Performance/Handling_regression_bugs) and **let us know your plans within 3 business days, or the offending patch(es) will be backed out** in accordance with our [regression policy](https://www.mozilla.org/en-US/about/governance/policies/regressions/).

For more information on performance sheriffing please see our [FAQ](https://wiki.mozilla.org/TestEngineering/Performance/FAQ).
(In reply to Joel Maher ( :jmaher ) (UTC-4) from comment #5)

> that would be a much larger change, we can file a bug or make this part of that, but I suspect it will be a wontfix or treated low priority.  There are a lot of moving parts to consider in making that happen.  How is this a problem now and wasn't a problem before?

We adapted to the old problems on the fly. For example, it's understandable why we receive **OPT**-like measurements from shippable-configured platforms.
But the variation from this case brought some extra confusion for other people reading the dashboards: the fact that we got **OPT**-like measurements *(which are actually PGO)* originating from PGO-enabled platforms. It's an ambiguous situation and a reader wouldn't know which signature part to trust: the build config or the platform name?

Perfherder has detected a talos performance regression from push [05ac29094b09d93fa530a55af7e29ff389353306](https://hg.mozilla.org/integration/autoland/pushloghtml?changeset=05ac29094b09d93fa530a55af7e29ff389353306). As author of one of the patches included in that push, we need your help to address this regression.

Perfherder has detected a talos performance regression from push [05ac29094b09d93fa530a55af7e29ff389353306](https://hg.mozilla.org/integration/autoland/pushloghtml?changeset=05ac29094b09d93fa530a55af7e29ff389353306). As author of one of the patches included in that push, we need your help to address this regression.

Regressions:

| **Ratio** | **Suite** | **Test** | **Platform** | **Options** | **Absolute values (old vs new)**| 
|--|--|--|--|--|--| 
| 6% | perf_reftest_singletons | id-getter-1.html | linux64-shippable | e10s stylo | 371.20 -> 392.47 |
| 5% | perf_reftest_singletons | id-getter-4.html | windows10-64-shippable-qr | e10s stylo | 449.85 -> 472.94 |
| 5% | perf_reftest_singletons | id-getter-5.html | windows10-64-shippable-qr | e10s stylo | 449.57 -> 472.48 |
| 5% | perf_reftest_singletons | id-getter-4.html | linux64-shippable | e10s stylo | 372.43 -> 391.39 |
| 5% | perf_reftest_singletons | id-getter-6.html | windows10-64-shippable-qr | e10s stylo | 449.90 -> 472.52 |  <br />

Improvements:

| **Ratio** | **Suite** | **Test** | **Platform** | **Options** | **Absolute values (old vs new)**| 
|--|--|--|--|--|--| 
| 47% | perf_reftest_singletons | getElementById-1.html | windows10-64-shippable-qr | e10s stylo | 107.94 -> 57.56 |
| 45% | perf_reftest_singletons | getElementById-1.html | windows7-32-shippable | e10s stylo | 109.29 -> 59.60 |
| 45% | perf_reftest_singletons | getElementById-1.html | windows10-64-shippable | e10s stylo | 105.75 -> 58.48 |
| 42% | perf_reftest_singletons | getElementById-1.html | macosx1014-64-shippable | e10s stylo | 100.85 -> 58.98 |
| 41% | perf_reftest_singletons | getElementById-1.html | linux64-shippable | e10s stylo | 94.77 -> 56.10 |
| 41% | perf_reftest_singletons | getElementById-1.html | linux64-shippable-qr | e10s stylo | 98.22 -> 58.41 |
| 12% | dromaeo_dom |  | linux64-shippable | e10s stylo | 1,887.73 -> 2,117.95 |


Details of the alert can be found in the [alert summary](http://localhost:5000/perf.html#/alerts?id=27129), including links to graphs and comparisons for each of the affected tests. Please follow our [guide to handling regression bugs](https://wiki.mozilla.org/TestEngineering/Performance/Handling_regression_bugs) and **let us know your plans within 3 business days, or the offending patch(es) will be backed out** in accordance with our [regression policy](https://www.mozilla.org/en-US/about/governance/policies/regressions/).

For more information on performance sheriffing please see our [FAQ](https://wiki.mozilla.org/TestEngineering/Performance/FAQ).
(In reply to Joel Maher ( :jmaher ) (UTC-4) from comment #5)

> that would be a much larger change, we can file a bug or make this part of that, but I suspect it will be a wontfix or treated low priority.  There are a lot of moving parts to consider in making that happen.  How is this a problem now and wasn't a problem before?

We adapted to the old problems on the fly. For example, it's understandable why we receive **OPT**-like measurements from shippable-configured platforms.
But the variation from this case brought some extra confusion for other people reading the dashboards: the fact that we got **OPT**-like measurements *(which are actually PGO)* originating from PGO-enabled platforms. It's an ambiguous situation and a reader wouldn't know which signature part to trust: the build config or the platform name?

Perfherder has detected a talos performance regression from push [05ac29094b09d93fa530a55af7e29ff389353306](https://hg.mozilla.org/integration/autoland/pushloghtml?changeset=05ac29094b09d93fa530a55af7e29ff389353306). As author of one of the patches included in that push, we need your help to address this regression.

Perfherder has detected a talos performance regression from push [05ac29094b09d93fa530a55af7e29ff389353306](https://hg.mozilla.org/integration/autoland/pushloghtml?changeset=05ac29094b09d93fa530a55af7e29ff389353306). As author of one of the patches included in that push, we need your help to address this regression.

Regressions:

| **Ratio** | **Suite** | **Test** | **Platform** | **Options** | **Absolute values (old vs new)**| 
|--|--|--|--|--|--| 
| 6% | perf_reftest_singletons | id-getter-1.html | linux64-shippable | e10s stylo | 371.20 -> 392.47 |
| 5% | perf_reftest_singletons | id-getter-4.html | windows10-64-shippable-qr | e10s stylo | 449.85 -> 472.94 |
| 5% | perf_reftest_singletons | id-getter-5.html | windows10-64-shippable-qr | e10s stylo | 449.57 -> 472.48 |
| 5% | perf_reftest_singletons | id-getter-4.html | linux64-shippable | e10s stylo | 372.43 -> 391.39 |
| 5% | perf_reftest_singletons | id-getter-6.html | windows10-64-shippable-qr | e10s stylo | 449.90 -> 472.52 |  <br />

Improvements:<br/>

| **Ratio** | **Suite** | **Test** | **Platform** | **Options** | **Absolute values (old vs new)**| 
|--|--|--|--|--|--| 
| 47% | perf_reftest_singletons | getElementById-1.html | windows10-64-shippable-qr | e10s stylo | 107.94 -> 57.56 |
| 45% | perf_reftest_singletons | getElementById-1.html | windows7-32-shippable | e10s stylo | 109.29 -> 59.60 |
| 45% | perf_reftest_singletons | getElementById-1.html | windows10-64-shippable | e10s stylo | 105.75 -> 58.48 |
| 42% | perf_reftest_singletons | getElementById-1.html | macosx1014-64-shippable | e10s stylo | 100.85 -> 58.98 |
| 41% | perf_reftest_singletons | getElementById-1.html | linux64-shippable | e10s stylo | 94.77 -> 56.10 |
| 41% | perf_reftest_singletons | getElementById-1.html | linux64-shippable-qr | e10s stylo | 98.22 -> 58.41 |
| 12% | dromaeo_dom |  | linux64-shippable | e10s stylo | 1,887.73 -> 2,117.95 |


Details of the alert can be found in the [alert summary](http://localhost:5000/perf.html#/alerts?id=27129), including links to graphs and comparisons for each of the affected tests. Please follow our [guide to handling regression bugs](https://wiki.mozilla.org/TestEngineering/Performance/Handling_regression_bugs) and **let us know your plans within 3 business days, or the offending patch(es) will be backed out** in accordance with our [regression policy](https://www.mozilla.org/en-US/about/governance/policies/regressions/).

For more information on performance sheriffing please see our [FAQ](https://wiki.mozilla.org/TestEngineering/Performance/FAQ).
(In reply to Joel Maher ( :jmaher ) (UTC-4) from comment #5)

> that would be a much larger change, we can file a bug or make this part of that, but I suspect it will be a wontfix or treated low priority.  There are a lot of moving parts to consider in making that happen.  How is this a problem now and wasn't a problem before?

We adapted to the old problems on the fly. For example, it's understandable why we receive **OPT**-like measurements from shippable-configured platforms.
But the variation from this case brought some extra confusion for other people reading the dashboards: the fact that we got **OPT**-like measurements *(which are actually PGO)* originating from PGO-enabled platforms. It's an ambiguous situation and a reader wouldn't know which signature part to trust: the build config or the platform name?

Perfherder has detected a talos performance regression from push [05ac29094b09d93fa530a55af7e29ff389353306](https://hg.mozilla.org/integration/autoland/pushloghtml?changeset=05ac29094b09d93fa530a55af7e29ff389353306). As author of one of the patches included in that push, we need your help to address this regression.

Perfherder has detected a talos performance regression from push [05ac29094b09d93fa530a55af7e29ff389353306](https://hg.mozilla.org/integration/autoland/pushloghtml?changeset=05ac29094b09d93fa530a55af7e29ff389353306). As author of one of the patches included in that push, we need your help to address this regression.

Regressions:

| **Ratio** | **Suite** | **Test** | **Platform** | **Options** | **Absolute values (old vs new)**| 
|--|--|--|--|--|--| 
| 6% | perf_reftest_singletons | id-getter-1.html | linux64-shippable | e10s stylo | 371.20 -> 392.47 |
| 5% | perf_reftest_singletons | id-getter-4.html | windows10-64-shippable-qr | e10s stylo | 449.85 -> 472.94 |
| 5% | perf_reftest_singletons | id-getter-5.html | windows10-64-shippable-qr | e10s stylo | 449.57 -> 472.48 |
| 5% | perf_reftest_singletons | id-getter-4.html | linux64-shippable | e10s stylo | 372.43 -> 391.39 |
| 5% | perf_reftest_singletons | id-getter-6.html | windows10-64-shippable-qr | e10s stylo | 449.90 -> 472.52 |  <br />

Improvements:&nbsp;

| **Ratio** | **Suite** | **Test** | **Platform** | **Options** | **Absolute values (old vs new)**| 
|--|--|--|--|--|--| 
| 47% | perf_reftest_singletons | getElementById-1.html | windows10-64-shippable-qr | e10s stylo | 107.94 -> 57.56 |
| 45% | perf_reftest_singletons | getElementById-1.html | windows7-32-shippable | e10s stylo | 109.29 -> 59.60 |
| 45% | perf_reftest_singletons | getElementById-1.html | windows10-64-shippable | e10s stylo | 105.75 -> 58.48 |
| 42% | perf_reftest_singletons | getElementById-1.html | macosx1014-64-shippable | e10s stylo | 100.85 -> 58.98 |
| 41% | perf_reftest_singletons | getElementById-1.html | linux64-shippable | e10s stylo | 94.77 -> 56.10 |
| 41% | perf_reftest_singletons | getElementById-1.html | linux64-shippable-qr | e10s stylo | 98.22 -> 58.41 |
| 12% | dromaeo_dom |  | linux64-shippable | e10s stylo | 1,887.73 -> 2,117.95 |


Details of the alert can be found in the [alert summary](http://localhost:5000/perf.html#/alerts?id=27129), including links to graphs and comparisons for each of the affected tests. Please follow our [guide to handling regression bugs](https://wiki.mozilla.org/TestEngineering/Performance/Handling_regression_bugs) and **let us know your plans within 3 business days, or the offending patch(es) will be backed out** in accordance with our [regression policy](https://www.mozilla.org/en-US/about/governance/policies/regressions/).

For more information on performance sheriffing please see our [FAQ](https://wiki.mozilla.org/TestEngineering/Performance/FAQ).
(In reply to Joel Maher ( :jmaher ) (UTC-4) from comment #5)

> that would be a much larger change, we can file a bug or make this part of that, but I suspect it will be a wontfix or treated low priority.  There are a lot of moving parts to consider in making that happen.  How is this a problem now and wasn't a problem before?

We adapted to the old problems on the fly. For example, it's understandable why we receive **OPT**-like measurements from shippable-configured platforms.
But the variation from this case brought some extra confusion for other people reading the dashboards: the fact that we got **OPT**-like measurements *(which are actually PGO)* originating from PGO-enabled platforms. It's an ambiguous situation and a reader wouldn't know which signature part to trust: the build config or the platform name?

Perfherder has detected a talos performance regression from push [05ac29094b09d93fa530a55af7e29ff389353306](https://hg.mozilla.org/integration/autoland/pushloghtml?changeset=05ac29094b09d93fa530a55af7e29ff389353306). As author of one of the patches included in that push, we need your help to address this regression.

Perfherder has detected a talos performance regression from push [05ac29094b09d93fa530a55af7e29ff389353306](https://hg.mozilla.org/integration/autoland/pushloghtml?changeset=05ac29094b09d93fa530a55af7e29ff389353306). As author of one of the patches included in that push, we need your help to address this regression.

Regressions:

| **Ratio** | **Suite** | **Test** | **Platform** | **Options** | **Absolute values (old vs new)**| 
|--|--|--|--|--|--| 
| 6% | perf_reftest_singletons | id-getter-1.html | linux64-shippable | e10s stylo | 371.20 -> 392.47 |
| 5% | perf_reftest_singletons | id-getter-4.html | windows10-64-shippable-qr | e10s stylo | 449.85 -> 472.94 |
| 5% | perf_reftest_singletons | id-getter-5.html | windows10-64-shippable-qr | e10s stylo | 449.57 -> 472.48 |
| 5% | perf_reftest_singletons | id-getter-4.html | linux64-shippable | e10s stylo | 372.43 -> 391.39 |
| 5% | perf_reftest_singletons | id-getter-6.html | windows10-64-shippable-qr | e10s stylo | 449.90 -> 472.52 |  <br />

Improvements:&nbsp;&nbsp;

| **Ratio** | **Suite** | **Test** | **Platform** | **Options** | **Absolute values (old vs new)**| 
|--|--|--|--|--|--| 
| 47% | perf_reftest_singletons | getElementById-1.html | windows10-64-shippable-qr | e10s stylo | 107.94 -> 57.56 |
| 45% | perf_reftest_singletons | getElementById-1.html | windows7-32-shippable | e10s stylo | 109.29 -> 59.60 |
| 45% | perf_reftest_singletons | getElementById-1.html | windows10-64-shippable | e10s stylo | 105.75 -> 58.48 |
| 42% | perf_reftest_singletons | getElementById-1.html | macosx1014-64-shippable | e10s stylo | 100.85 -> 58.98 |
| 41% | perf_reftest_singletons | getElementById-1.html | linux64-shippable | e10s stylo | 94.77 -> 56.10 |
| 41% | perf_reftest_singletons | getElementById-1.html | linux64-shippable-qr | e10s stylo | 98.22 -> 58.41 |
| 12% | dromaeo_dom |  | linux64-shippable | e10s stylo | 1,887.73 -> 2,117.95 |


Details of the alert can be found in the [alert summary](http://localhost:5000/perf.html#/alerts?id=27129), including links to graphs and comparisons for each of the affected tests. Please follow our [guide to handling regression bugs](https://wiki.mozilla.org/TestEngineering/Performance/Handling_regression_bugs) and **let us know your plans within 3 business days, or the offending patch(es) will be backed out** in accordance with our [regression policy](https://www.mozilla.org/en-US/about/governance/policies/regressions/).

For more information on performance sheriffing please see our [FAQ](https://wiki.mozilla.org/TestEngineering/Performance/FAQ).
(In reply to Joel Maher ( :jmaher ) (UTC-4) from comment #5)

> that would be a much larger change, we can file a bug or make this part of that, but I suspect it will be a wontfix or treated low priority.  There are a lot of moving parts to consider in making that happen.  How is this a problem now and wasn't a problem before?

We adapted to the old problems on the fly. For example, it's understandable why we receive **OPT**-like measurements from shippable-configured platforms.
But the variation from this case brought some extra confusion for other people reading the dashboards: the fact that we got **OPT**-like measurements *(which are actually PGO)* originating from PGO-enabled platforms. It's an ambiguous situation and a reader wouldn't know which signature part to trust: the build config or the platform name?

Perfherder has detected a talos performance regression from push [05ac29094b09d93fa530a55af7e29ff389353306](https://hg.mozilla.org/integration/autoland/pushloghtml?changeset=05ac29094b09d93fa530a55af7e29ff389353306). As author of one of the patches included in that push, we need your help to address this regression.

Perfherder has detected a talos performance regression from push [05ac29094b09d93fa530a55af7e29ff389353306](https://hg.mozilla.org/integration/autoland/pushloghtml?changeset=05ac29094b09d93fa530a55af7e29ff389353306). As author of one of the patches included in that push, we need your help to address this regression.

Regressions:

| **Ratio** | **Suite** | **Test** | **Platform** | **Options** | **Absolute values (old vs new)**| 
|--|--|--|--|--|--| 
| 6% | perf_reftest_singletons | id-getter-1.html | linux64-shippable | e10s stylo | 371.20 -> 392.47 |
| 5% | perf_reftest_singletons | id-getter-4.html | windows10-64-shippable-qr | e10s stylo | 449.85 -> 472.94 |
| 5% | perf_reftest_singletons | id-getter-5.html | windows10-64-shippable-qr | e10s stylo | 449.57 -> 472.48 |
| 5% | perf_reftest_singletons | id-getter-4.html | linux64-shippable | e10s stylo | 372.43 -> 391.39 |
| 5% | perf_reftest_singletons | id-getter-6.html | windows10-64-shippable-qr | e10s stylo | 449.90 -> 472.52 |&nbsp;

Improvements:&nbsp;&nbsp;

| **Ratio** | **Suite** | **Test** | **Platform** | **Options** | **Absolute values (old vs new)**| 
|--|--|--|--|--|--| 
| 47% | perf_reftest_singletons | getElementById-1.html | windows10-64-shippable-qr | e10s stylo | 107.94 -> 57.56 |
| 45% | perf_reftest_singletons | getElementById-1.html | windows7-32-shippable | e10s stylo | 109.29 -> 59.60 |
| 45% | perf_reftest_singletons | getElementById-1.html | windows10-64-shippable | e10s stylo | 105.75 -> 58.48 |
| 42% | perf_reftest_singletons | getElementById-1.html | macosx1014-64-shippable | e10s stylo | 100.85 -> 58.98 |
| 41% | perf_reftest_singletons | getElementById-1.html | linux64-shippable | e10s stylo | 94.77 -> 56.10 |
| 41% | perf_reftest_singletons | getElementById-1.html | linux64-shippable-qr | e10s stylo | 98.22 -> 58.41 |
| 12% | dromaeo_dom |  | linux64-shippable | e10s stylo | 1,887.73 -> 2,117.95 |


Details of the alert can be found in the [alert summary](http://localhost:5000/perf.html#/alerts?id=27129), including links to graphs and comparisons for each of the affected tests. Please follow our [guide to handling regression bugs](https://wiki.mozilla.org/TestEngineering/Performance/Handling_regression_bugs) and **let us know your plans within 3 business days, or the offending patch(es) will be backed out** in accordance with our [regression policy](https://www.mozilla.org/en-US/about/governance/policies/regressions/).

For more information on performance sheriffing please see our [FAQ](https://wiki.mozilla.org/TestEngineering/Performance/FAQ).
(In reply to Joel Maher ( :jmaher ) (UTC-4) from comment #5)

> that would be a much larger change, we can file a bug or make this part of that, but I suspect it will be a wontfix or treated low priority.  There are a lot of moving parts to consider in making that happen.  How is this a problem now and wasn't a problem before?

We adapted to the old problems on the fly. For example, it's understandable why we receive **OPT**-like measurements from shippable-configured platforms.
But the variation from this case brought some extra confusion for other people reading the dashboards: the fact that we got **OPT**-like measurements *(which are actually PGO)* originating from PGO-enabled platforms. It's an ambiguous situation and a reader wouldn't know which signature part to trust: the build config or the platform name?

Perfherder has detected a talos performance regression from push [05ac29094b09d93fa530a55af7e29ff389353306](https://hg.mozilla.org/integration/autoland/pushloghtml?changeset=05ac29094b09d93fa530a55af7e29ff389353306). As author of one of the patches included in that push, we need your help to address this regression.

Perfherder has detected a talos performance regression from push [05ac29094b09d93fa530a55af7e29ff389353306](https://hg.mozilla.org/integration/autoland/pushloghtml?changeset=05ac29094b09d93fa530a55af7e29ff389353306). As author of one of the patches included in that push, we need your help to address this regression.

Regressions:

| **Ratio** | **Suite** | **Test** | **Platform** | **Options** | **Absolute values (old vs new)**| 
|--|--|--|--|--|--| 
| 6% | perf_reftest_singletons | id-getter-1.html | linux64-shippable | e10s stylo | 371.20 -> 392.47 |
| 5% | perf_reftest_singletons | id-getter-4.html | windows10-64-shippable-qr | e10s stylo | 449.85 -> 472.94 |
| 5% | perf_reftest_singletons | id-getter-5.html | windows10-64-shippable-qr | e10s stylo | 449.57 -> 472.48 |
| 5% | perf_reftest_singletons | id-getter-4.html | linux64-shippable | e10s stylo | 372.43 -> 391.39 |
| 5% | perf_reftest_singletons | id-getter-6.html | windows10-64-shippable-qr | e10s stylo | 449.90 -> 472.52 |<br>

Improvements:&nbsp;&nbsp;

| **Ratio** | **Suite** | **Test** | **Platform** | **Options** | **Absolute values (old vs new)**| 
|--|--|--|--|--|--| 
| 47% | perf_reftest_singletons | getElementById-1.html | windows10-64-shippable-qr | e10s stylo | 107.94 -> 57.56 |
| 45% | perf_reftest_singletons | getElementById-1.html | windows7-32-shippable | e10s stylo | 109.29 -> 59.60 |
| 45% | perf_reftest_singletons | getElementById-1.html | windows10-64-shippable | e10s stylo | 105.75 -> 58.48 |
| 42% | perf_reftest_singletons | getElementById-1.html | macosx1014-64-shippable | e10s stylo | 100.85 -> 58.98 |
| 41% | perf_reftest_singletons | getElementById-1.html | linux64-shippable | e10s stylo | 94.77 -> 56.10 |
| 41% | perf_reftest_singletons | getElementById-1.html | linux64-shippable-qr | e10s stylo | 98.22 -> 58.41 |
| 12% | dromaeo_dom |  | linux64-shippable | e10s stylo | 1,887.73 -> 2,117.95 |


Details of the alert can be found in the [alert summary](http://localhost:5000/perf.html#/alerts?id=27129), including links to graphs and comparisons for each of the affected tests. Please follow our [guide to handling regression bugs](https://wiki.mozilla.org/TestEngineering/Performance/Handling_regression_bugs) and **let us know your plans within 3 business days, or the offending patch(es) will be backed out** in accordance with our [regression policy](https://www.mozilla.org/en-US/about/governance/policies/regressions/).

For more information on performance sheriffing please see our [FAQ](https://wiki.mozilla.org/TestEngineering/Performance/FAQ).
(In reply to Joel Maher ( :jmaher ) (UTC-4) from comment #5)

> that would be a much larger change, we can file a bug or make this part of that, but I suspect it will be a wontfix or treated low priority.  There are a lot of moving parts to consider in making that happen.  How is this a problem now and wasn't a problem before?

We adapted to the old problems on the fly. For example, it's understandable why we receive **OPT**-like measurements from shippable-configured platforms.
But the variation from this case brought some extra confusion for other people reading the dashboards: the fact that we got **OPT**-like measurements *(which are actually PGO)* originating from PGO-enabled platforms. It's an ambiguous situation and a reader wouldn't know which signature part to trust: the build config or the platform name?

Perfherder has detected a talos performance regression from push [05ac29094b09d93fa530a55af7e29ff389353306](https://hg.mozilla.org/integration/autoland/pushloghtml?changeset=05ac29094b09d93fa530a55af7e29ff389353306). As author of one of the patches included in that push, we need your help to address this regression.

Perfherder has detected a talos performance regression from push [05ac29094b09d93fa530a55af7e29ff389353306](https://hg.mozilla.org/integration/autoland/pushloghtml?changeset=05ac29094b09d93fa530a55af7e29ff389353306). As author of one of the patches included in that push, we need your help to address this regression.

Regressions:

| **Ratio** | **Suite** | **Test** | **Platform** | **Options** | **Absolute values (old vs new)**| 
|--|--|--|--|--|--| 
| 6% | perf_reftest_singletons | id-getter-1.html | linux64-shippable | e10s stylo | 371.20 -> 392.47 |
| 5% | perf_reftest_singletons | id-getter-4.html | windows10-64-shippable-qr | e10s stylo | 449.85 -> 472.94 |
| 5% | perf_reftest_singletons | id-getter-5.html | windows10-64-shippable-qr | e10s stylo | 449.57 -> 472.48 |
| 5% | perf_reftest_singletons | id-getter-4.html | linux64-shippable | e10s stylo | 372.43 -> 391.39 |
| 5% | perf_reftest_singletons | id-getter-6.html | windows10-64-shippable-qr | e10s stylo | 449.90 -> 472.52 |<br>
<br>
Improvements:

| **Ratio** | **Suite** | **Test** | **Platform** | **Options** | **Absolute values (old vs new)**| 
|--|--|--|--|--|--| 
| 47% | perf_reftest_singletons | getElementById-1.html | windows10-64-shippable-qr | e10s stylo | 107.94 -> 57.56 |
| 45% | perf_reftest_singletons | getElementById-1.html | windows7-32-shippable | e10s stylo | 109.29 -> 59.60 |
| 45% | perf_reftest_singletons | getElementById-1.html | windows10-64-shippable | e10s stylo | 105.75 -> 58.48 |
| 42% | perf_reftest_singletons | getElementById-1.html | macosx1014-64-shippable | e10s stylo | 100.85 -> 58.98 |
| 41% | perf_reftest_singletons | getElementById-1.html | linux64-shippable | e10s stylo | 94.77 -> 56.10 |
| 41% | perf_reftest_singletons | getElementById-1.html | linux64-shippable-qr | e10s stylo | 98.22 -> 58.41 |
| 12% | dromaeo_dom |  | linux64-shippable | e10s stylo | 1,887.73 -> 2,117.95 |


Details of the alert can be found in the [alert summary](http://localhost:5000/perf.html#/alerts?id=27129), including links to graphs and comparisons for each of the affected tests. Please follow our [guide to handling regression bugs](https://wiki.mozilla.org/TestEngineering/Performance/Handling_regression_bugs) and **let us know your plans within 3 business days, or the offending patch(es) will be backed out** in accordance with our [regression policy](https://www.mozilla.org/en-US/about/governance/policies/regressions/).

For more information on performance sheriffing please see our [FAQ](https://wiki.mozilla.org/TestEngineering/Performance/FAQ).
(In reply to Joel Maher ( :jmaher ) (UTC-4) from comment #5)

> that would be a much larger change, we can file a bug or make this part of that, but I suspect it will be a wontfix or treated low priority.  There are a lot of moving parts to consider in making that happen.  How is this a problem now and wasn't a problem before?

We adapted to the old problems on the fly. For example, it's understandable why we receive **OPT**-like measurements from shippable-configured platforms.
But the variation from this case brought some extra confusion for other people reading the dashboards: the fact that we got **OPT**-like measurements *(which are actually PGO)* originating from PGO-enabled platforms. It's an ambiguous situation and a reader wouldn't know which signature part to trust: the build config or the platform name?

Perfherder has detected a talos performance regression from push [05ac29094b09d93fa530a55af7e29ff389353306](https://hg.mozilla.org/integration/autoland/pushloghtml?changeset=05ac29094b09d93fa530a55af7e29ff389353306). As author of one of the patches included in that push, we need your help to address this regression.

Perfherder has detected a talos performance regression from push [05ac29094b09d93fa530a55af7e29ff389353306](https://hg.mozilla.org/integration/autoland/pushloghtml?changeset=05ac29094b09d93fa530a55af7e29ff389353306). As author of one of the patches included in that push, we need your help to address this regression.

Regressions:

| **Ratio** | **Suite** | **Test** | **Platform** | **Options** | **Absolute values (old vs new)**| 
|--|--|--|--|--|--| 
| 6% | perf_reftest_singletons | id-getter-1.html | linux64-shippable | e10s stylo | 371.20 -> 392.47 |
| 5% | perf_reftest_singletons | id-getter-4.html | windows10-64-shippable-qr | e10s stylo | 449.85 -> 472.94 |
| 5% | perf_reftest_singletons | id-getter-5.html | windows10-64-shippable-qr | e10s stylo | 449.57 -> 472.48 |
| 5% | perf_reftest_singletons | id-getter-4.html | linux64-shippable | e10s stylo | 372.43 -> 391.39 |
| 5% | perf_reftest_singletons | id-getter-6.html | windows10-64-shippable-qr | e10s stylo | 449.90 -> 472.52 |<br>

<br>Improvements:

| **Ratio** | **Suite** | **Test** | **Platform** | **Options** | **Absolute values (old vs new)**| 
|--|--|--|--|--|--| 
| 47% | perf_reftest_singletons | getElementById-1.html | windows10-64-shippable-qr | e10s stylo | 107.94 -> 57.56 |
| 45% | perf_reftest_singletons | getElementById-1.html | windows7-32-shippable | e10s stylo | 109.29 -> 59.60 |
| 45% | perf_reftest_singletons | getElementById-1.html | windows10-64-shippable | e10s stylo | 105.75 -> 58.48 |
| 42% | perf_reftest_singletons | getElementById-1.html | macosx1014-64-shippable | e10s stylo | 100.85 -> 58.98 |
| 41% | perf_reftest_singletons | getElementById-1.html | linux64-shippable | e10s stylo | 94.77 -> 56.10 |
| 41% | perf_reftest_singletons | getElementById-1.html | linux64-shippable-qr | e10s stylo | 98.22 -> 58.41 |
| 12% | dromaeo_dom |  | linux64-shippable | e10s stylo | 1,887.73 -> 2,117.95 |


Details of the alert can be found in the [alert summary](http://localhost:5000/perf.html#/alerts?id=27129), including links to graphs and comparisons for each of the affected tests. Please follow our [guide to handling regression bugs](https://wiki.mozilla.org/TestEngineering/Performance/Handling_regression_bugs) and **let us know your plans within 3 business days, or the offending patch(es) will be backed out** in accordance with our [regression policy](https://www.mozilla.org/en-US/about/governance/policies/regressions/).

For more information on performance sheriffing please see our [FAQ](https://wiki.mozilla.org/TestEngineering/Performance/FAQ).
(In reply to Joel Maher ( :jmaher ) (UTC-4) from comment #5)

> that would be a much larger change, we can file a bug or make this part of that, but I suspect it will be a wontfix or treated low priority.  There are a lot of moving parts to consider in making that happen.  How is this a problem now and wasn't a problem before?

We adapted to the old problems on the fly. For example, it's understandable why we receive **OPT**-like measurements from shippable-configured platforms.
But the variation from this case brought some extra confusion for other people reading the dashboards: the fact that we got **OPT**-like measurements *(which are actually PGO)* originating from PGO-enabled platforms. It's an ambiguous situation and a reader wouldn't know which signature part to trust: the build config or the platform name?

Perfherder has detected a talos performance regression from push [05ac29094b09d93fa530a55af7e29ff389353306](https://hg.mozilla.org/integration/autoland/pushloghtml?changeset=05ac29094b09d93fa530a55af7e29ff389353306). As author of one of the patches included in that push, we need your help to address this regression.

Perfherder has detected a talos performance regression from push [05ac29094b09d93fa530a55af7e29ff389353306](https://hg.mozilla.org/integration/autoland/pushloghtml?changeset=05ac29094b09d93fa530a55af7e29ff389353306). As author of one of the patches included in that push, we need your help to address this regression.

Regressions:

| **Ratio** | **Suite** | **Test** | **Platform** | **Options** | **Absolute values (old vs new)**| 
|--|--|--|--|--|--| 
| 6% | perf_reftest_singletons | id-getter-1.html | linux64-shippable | e10s stylo | 371.20 -> 392.47 |
| 5% | perf_reftest_singletons | id-getter-4.html | windows10-64-shippable-qr | e10s stylo | 449.85 -> 472.94 |
| 5% | perf_reftest_singletons | id-getter-5.html | windows10-64-shippable-qr | e10s stylo | 449.57 -> 472.48 |
| 5% | perf_reftest_singletons | id-getter-4.html | linux64-shippable | e10s stylo | 372.43 -> 391.39 |
| 5% | perf_reftest_singletons | id-getter-6.html | windows10-64-shippable-qr | e10s stylo | 449.90 -> 472.52 |<br>

####Improvements:

| **Ratio** | **Suite** | **Test** | **Platform** | **Options** | **Absolute values (old vs new)**| 
|--|--|--|--|--|--| 
| 47% | perf_reftest_singletons | getElementById-1.html | windows10-64-shippable-qr | e10s stylo | 107.94 -> 57.56 |
| 45% | perf_reftest_singletons | getElementById-1.html | windows7-32-shippable | e10s stylo | 109.29 -> 59.60 |
| 45% | perf_reftest_singletons | getElementById-1.html | windows10-64-shippable | e10s stylo | 105.75 -> 58.48 |
| 42% | perf_reftest_singletons | getElementById-1.html | macosx1014-64-shippable | e10s stylo | 100.85 -> 58.98 |
| 41% | perf_reftest_singletons | getElementById-1.html | linux64-shippable | e10s stylo | 94.77 -> 56.10 |
| 41% | perf_reftest_singletons | getElementById-1.html | linux64-shippable-qr | e10s stylo | 98.22 -> 58.41 |
| 12% | dromaeo_dom |  | linux64-shippable | e10s stylo | 1,887.73 -> 2,117.95 |


Details of the alert can be found in the [alert summary](http://localhost:5000/perf.html#/alerts?id=27129), including links to graphs and comparisons for each of the affected tests. Please follow our [guide to handling regression bugs](https://wiki.mozilla.org/TestEngineering/Performance/Handling_regression_bugs) and **let us know your plans within 3 business days, or the offending patch(es) will be backed out** in accordance with our [regression policy](https://www.mozilla.org/en-US/about/governance/policies/regressions/).

For more information on performance sheriffing please see our [FAQ](https://wiki.mozilla.org/TestEngineering/Performance/FAQ).
(In reply to Joel Maher ( :jmaher ) (UTC-4) from comment #5)

> that would be a much larger change, we can file a bug or make this part of that, but I suspect it will be a wontfix or treated low priority.  There are a lot of moving parts to consider in making that happen.  How is this a problem now and wasn't a problem before?

We adapted to the old problems on the fly. For example, it's understandable why we receive **OPT**-like measurements from shippable-configured platforms.
But the variation from this case brought some extra confusion for other people reading the dashboards: the fact that we got **OPT**-like measurements *(which are actually PGO)* originating from PGO-enabled platforms. It's an ambiguous situation and a reader wouldn't know which signature part to trust: the build config or the platform name?

Perfherder has detected a talos performance regression from push [05ac29094b09d93fa530a55af7e29ff389353306](https://hg.mozilla.org/integration/autoland/pushloghtml?changeset=05ac29094b09d93fa530a55af7e29ff389353306). As author of one of the patches included in that push, we need your help to address this regression.

Perfherder has detected a talos performance regression from push [05ac29094b09d93fa530a55af7e29ff389353306](https://hg.mozilla.org/integration/autoland/pushloghtml?changeset=05ac29094b09d93fa530a55af7e29ff389353306). As author of one of the patches included in that push, we need your help to address this regression.

Regressions:

| **Ratio** | **Suite** | **Test** | **Platform** | **Options** | **Absolute values (old vs new)**| 
|--|--|--|--|--|--| 
| 6% | perf_reftest_singletons | id-getter-1.html | linux64-shippable | e10s stylo | 371.20 -> 392.47 |
| 5% | perf_reftest_singletons | id-getter-4.html | windows10-64-shippable-qr | e10s stylo | 449.85 -> 472.94 |
| 5% | perf_reftest_singletons | id-getter-5.html | windows10-64-shippable-qr | e10s stylo | 449.57 -> 472.48 |
| 5% | perf_reftest_singletons | id-getter-4.html | linux64-shippable | e10s stylo | 372.43 -> 391.39 |
| 5% | perf_reftest_singletons | id-getter-6.html | windows10-64-shippable-qr | e10s stylo | 449.90 -> 472.52 |<br>

#### Improvements:

| **Ratio** | **Suite** | **Test** | **Platform** | **Options** | **Absolute values (old vs new)**| 
|--|--|--|--|--|--| 
| 47% | perf_reftest_singletons | getElementById-1.html | windows10-64-shippable-qr | e10s stylo | 107.94 -> 57.56 |
| 45% | perf_reftest_singletons | getElementById-1.html | windows7-32-shippable | e10s stylo | 109.29 -> 59.60 |
| 45% | perf_reftest_singletons | getElementById-1.html | windows10-64-shippable | e10s stylo | 105.75 -> 58.48 |
| 42% | perf_reftest_singletons | getElementById-1.html | macosx1014-64-shippable | e10s stylo | 100.85 -> 58.98 |
| 41% | perf_reftest_singletons | getElementById-1.html | linux64-shippable | e10s stylo | 94.77 -> 56.10 |
| 41% | perf_reftest_singletons | getElementById-1.html | linux64-shippable-qr | e10s stylo | 98.22 -> 58.41 |
| 12% | dromaeo_dom |  | linux64-shippable | e10s stylo | 1,887.73 -> 2,117.95 |


Details of the alert can be found in the [alert summary](http://localhost:5000/perf.html#/alerts?id=27129), including links to graphs and comparisons for each of the affected tests. Please follow our [guide to handling regression bugs](https://wiki.mozilla.org/TestEngineering/Performance/Handling_regression_bugs) and **let us know your plans within 3 business days, or the offending patch(es) will be backed out** in accordance with our [regression policy](https://www.mozilla.org/en-US/about/governance/policies/regressions/).

For more information on performance sheriffing please see our [FAQ](https://wiki.mozilla.org/TestEngineering/Performance/FAQ).
(In reply to Joel Maher ( :jmaher ) (UTC-4) from comment #5)

> that would be a much larger change, we can file a bug or make this part of that, but I suspect it will be a wontfix or treated low priority.  There are a lot of moving parts to consider in making that happen.  How is this a problem now and wasn't a problem before?

We adapted to the old problems on the fly. For example, it's understandable why we receive **OPT**-like measurements from shippable-configured platforms.
But the variation from this case brought some extra confusion for other people reading the dashboards: the fact that we got **OPT**-like measurements *(which are actually PGO)* originating from PGO-enabled platforms. It's an ambiguous situation and a reader wouldn't know which signature part to trust: the build config or the platform name?

Perfherder has detected a talos performance regression from push [05ac29094b09d93fa530a55af7e29ff389353306](https://hg.mozilla.org/integration/autoland/pushloghtml?changeset=05ac29094b09d93fa530a55af7e29ff389353306). As author of one of the patches included in that push, we need your help to address this regression.

Perfherder has detected a talos performance regression from push [05ac29094b09d93fa530a55af7e29ff389353306](https://hg.mozilla.org/integration/autoland/pushloghtml?changeset=05ac29094b09d93fa530a55af7e29ff389353306). As author of one of the patches included in that push, we need your help to address this regression.

#### Regressions:

| **Ratio** | **Suite** | **Test** | **Platform** | **Options** | **Absolute values (old vs new)**| 
|--|--|--|--|--|--| 
| 6% | perf_reftest_singletons | id-getter-1.html | linux64-shippable | e10s stylo | 371.20 -> 392.47 |
| 5% | perf_reftest_singletons | id-getter-4.html | windows10-64-shippable-qr | e10s stylo | 449.85 -> 472.94 |
| 5% | perf_reftest_singletons | id-getter-5.html | windows10-64-shippable-qr | e10s stylo | 449.57 -> 472.48 |
| 5% | perf_reftest_singletons | id-getter-4.html | linux64-shippable | e10s stylo | 372.43 -> 391.39 |
| 5% | perf_reftest_singletons | id-getter-6.html | windows10-64-shippable-qr | e10s stylo | 449.90 -> 472.52 |<br>

#### Improvements:

| **Ratio** | **Suite** | **Test** | **Platform** | **Options** | **Absolute values (old vs new)**| 
|--|--|--|--|--|--| 
| 47% | perf_reftest_singletons | getElementById-1.html | windows10-64-shippable-qr | e10s stylo | 107.94 -> 57.56 |
| 45% | perf_reftest_singletons | getElementById-1.html | windows7-32-shippable | e10s stylo | 109.29 -> 59.60 |
| 45% | perf_reftest_singletons | getElementById-1.html | windows10-64-shippable | e10s stylo | 105.75 -> 58.48 |
| 42% | perf_reftest_singletons | getElementById-1.html | macosx1014-64-shippable | e10s stylo | 100.85 -> 58.98 |
| 41% | perf_reftest_singletons | getElementById-1.html | linux64-shippable | e10s stylo | 94.77 -> 56.10 |
| 41% | perf_reftest_singletons | getElementById-1.html | linux64-shippable-qr | e10s stylo | 98.22 -> 58.41 |
| 12% | dromaeo_dom |  | linux64-shippable | e10s stylo | 1,887.73 -> 2,117.95 |


Details of the alert can be found in the [alert summary](http://localhost:5000/perf.html#/alerts?id=27129), including links to graphs and comparisons for each of the affected tests. Please follow our [guide to handling regression bugs](https://wiki.mozilla.org/TestEngineering/Performance/Handling_regression_bugs) and **let us know your plans within 3 business days, or the offending patch(es) will be backed out** in accordance with our [regression policy](https://www.mozilla.org/en-US/about/governance/policies/regressions/).

For more information on performance sheriffing please see our [FAQ](https://wiki.mozilla.org/TestEngineering/Performance/FAQ).
(In reply to Joel Maher ( :jmaher ) (UTC-4) from comment #5)

> that would be a much larger change, we can file a bug or make this part of that, but I suspect it will be a wontfix or treated low priority.  There are a lot of moving parts to consider in making that happen.  How is this a problem now and wasn't a problem before?

We adapted to the old problems on the fly. For example, it's understandable why we receive **OPT**-like measurements from shippable-configured platforms.
But the variation from this case brought some extra confusion for other people reading the dashboards: the fact that we got **OPT**-like measurements *(which are actually PGO)* originating from PGO-enabled platforms. It's an ambiguous situation and a reader wouldn't know which signature part to trust: the build config or the platform name?

Perfherder has detected a talos performance regression from push [05ac29094b09d93fa530a55af7e29ff389353306](https://hg.mozilla.org/integration/autoland/pushloghtml?changeset=05ac29094b09d93fa530a55af7e29ff389353306). As author of one of the patches included in that push, we need your help to address this regression.

Perfherder has detected a talos performance regression from push [05ac29094b09d93fa530a55af7e29ff389353306](https://hg.mozilla.org/integration/autoland/pushloghtml?changeset=05ac29094b09d93fa530a55af7e29ff389353306). As author of one of the patches included in that push, we need your help to address this regression.

### Regressions:

| **Ratio** | **Suite** | **Test** | **Platform** | **Options** | **Absolute values (old vs new)**| 
|--|--|--|--|--|--| 
| 6% | perf_reftest_singletons | id-getter-1.html | linux64-shippable | e10s stylo | 371.20 -> 392.47 |
| 5% | perf_reftest_singletons | id-getter-4.html | windows10-64-shippable-qr | e10s stylo | 449.85 -> 472.94 |
| 5% | perf_reftest_singletons | id-getter-5.html | windows10-64-shippable-qr | e10s stylo | 449.57 -> 472.48 |
| 5% | perf_reftest_singletons | id-getter-4.html | linux64-shippable | e10s stylo | 372.43 -> 391.39 |
| 5% | perf_reftest_singletons | id-getter-6.html | windows10-64-shippable-qr | e10s stylo | 449.90 -> 472.52 |<br>

#### Improvements:

| **Ratio** | **Suite** | **Test** | **Platform** | **Options** | **Absolute values (old vs new)**| 
|--|--|--|--|--|--| 
| 47% | perf_reftest_singletons | getElementById-1.html | windows10-64-shippable-qr | e10s stylo | 107.94 -> 57.56 |
| 45% | perf_reftest_singletons | getElementById-1.html | windows7-32-shippable | e10s stylo | 109.29 -> 59.60 |
| 45% | perf_reftest_singletons | getElementById-1.html | windows10-64-shippable | e10s stylo | 105.75 -> 58.48 |
| 42% | perf_reftest_singletons | getElementById-1.html | macosx1014-64-shippable | e10s stylo | 100.85 -> 58.98 |
| 41% | perf_reftest_singletons | getElementById-1.html | linux64-shippable | e10s stylo | 94.77 -> 56.10 |
| 41% | perf_reftest_singletons | getElementById-1.html | linux64-shippable-qr | e10s stylo | 98.22 -> 58.41 |
| 12% | dromaeo_dom |  | linux64-shippable | e10s stylo | 1,887.73 -> 2,117.95 |


Details of the alert can be found in the [alert summary](http://localhost:5000/perf.html#/alerts?id=27129), including links to graphs and comparisons for each of the affected tests. Please follow our [guide to handling regression bugs](https://wiki.mozilla.org/TestEngineering/Performance/Handling_regression_bugs) and **let us know your plans within 3 business days, or the offending patch(es) will be backed out** in accordance with our [regression policy](https://www.mozilla.org/en-US/about/governance/policies/regressions/).

For more information on performance sheriffing please see our [FAQ](https://wiki.mozilla.org/TestEngineering/Performance/FAQ).
(In reply to Joel Maher ( :jmaher ) (UTC-4) from comment #5)

> that would be a much larger change, we can file a bug or make this part of that, but I suspect it will be a wontfix or treated low priority.  There are a lot of moving parts to consider in making that happen.  How is this a problem now and wasn't a problem before?

We adapted to the old problems on the fly. For example, it's understandable why we receive **OPT**-like measurements from shippable-configured platforms.
But the variation from this case brought some extra confusion for other people reading the dashboards: the fact that we got **OPT**-like measurements *(which are actually PGO)* originating from PGO-enabled platforms. It's an ambiguous situation and a reader wouldn't know which signature part to trust: the build config or the platform name?

Perfherder has detected a talos performance regression from push [05ac29094b09d93fa530a55af7e29ff389353306](https://hg.mozilla.org/integration/autoland/pushloghtml?changeset=05ac29094b09d93fa530a55af7e29ff389353306). As author of one of the patches included in that push, we need your help to address this regression.

Perfherder has detected a talos performance regression from push [05ac29094b09d93fa530a55af7e29ff389353306](https://hg.mozilla.org/integration/autoland/pushloghtml?changeset=05ac29094b09d93fa530a55af7e29ff389353306). As author of one of the patches included in that push, we need your help to address this regression.

### Regressions:

| **Ratio** | **Suite** | **Test** | **Platform** | **Options** | **Absolute values (old vs new)**| 
|--|--|--|--|--|--| 
| 6% | perf_reftest_singletons | id-getter-1.html | linux64-shippable | e10s stylo | 371.20 -> 392.47 |
| 5% | perf_reftest_singletons | id-getter-4.html | windows10-64-shippable-qr | e10s stylo | 449.85 -> 472.94 |
| 5% | perf_reftest_singletons | id-getter-5.html | windows10-64-shippable-qr | e10s stylo | 449.57 -> 472.48 |
| 5% | perf_reftest_singletons | id-getter-4.html | linux64-shippable | e10s stylo | 372.43 -> 391.39 |
| 5% | perf_reftest_singletons | id-getter-6.html | windows10-64-shippable-qr | e10s stylo | 449.90 -> 472.52 |<br>

### Improvements:

| **Ratio** | **Suite** | **Test** | **Platform** | **Options** | **Absolute values (old vs new)**| 
|--|--|--|--|--|--| 
| 47% | perf_reftest_singletons | getElementById-1.html | windows10-64-shippable-qr | e10s stylo | 107.94 -> 57.56 |
| 45% | perf_reftest_singletons | getElementById-1.html | windows7-32-shippable | e10s stylo | 109.29 -> 59.60 |
| 45% | perf_reftest_singletons | getElementById-1.html | windows10-64-shippable | e10s stylo | 105.75 -> 58.48 |
| 42% | perf_reftest_singletons | getElementById-1.html | macosx1014-64-shippable | e10s stylo | 100.85 -> 58.98 |
| 41% | perf_reftest_singletons | getElementById-1.html | linux64-shippable | e10s stylo | 94.77 -> 56.10 |
| 41% | perf_reftest_singletons | getElementById-1.html | linux64-shippable-qr | e10s stylo | 98.22 -> 58.41 |
| 12% | dromaeo_dom |  | linux64-shippable | e10s stylo | 1,887.73 -> 2,117.95 |


Details of the alert can be found in the [alert summary](http://localhost:5000/perf.html#/alerts?id=27129), including links to graphs and comparisons for each of the affected tests. Please follow our [guide to handling regression bugs](https://wiki.mozilla.org/TestEngineering/Performance/Handling_regression_bugs) and **let us know your plans within 3 business days, or the offending patch(es) will be backed out** in accordance with our [regression policy](https://www.mozilla.org/en-US/about/governance/policies/regressions/).

For more information on performance sheriffing please see our [FAQ](https://wiki.mozilla.org/TestEngineering/Performance/FAQ).
(In reply to Joel Maher ( :jmaher ) (UTC-4) from comment #5)

> that would be a much larger change, we can file a bug or make this part of that, but I suspect it will be a wontfix or treated low priority.  There are a lot of moving parts to consider in making that happen.  How is this a problem now and wasn't a problem before?

We adapted to the old problems on the fly. For example, it's understandable why we receive **OPT**-like measurements from shippable-configured platforms.
But the variation from this case brought some extra confusion for other people reading the dashboards: the fact that we got **OPT**-like measurements *(which are actually PGO)* originating from PGO-enabled platforms. It's an ambiguous situation and a reader wouldn't know which signature part to trust: the build config or the platform name?

Back to Bug 1543016 Comment 6