Perfherder has detected a talos performance regression from push [c55e3a40a4de20482f056a3de9e9823fb8c82768](https://hg.mozilla.org/integration/autoland/pushloghtml?changeset=c55e3a40a4de20482f056a3de9e9823fb8c82768). As author of one of the patches included in that push, we need your help to address this regression. ### Regressions: | **Ratio** | **Test** | **Platform** | **Options** | **Absolute values (old vs new)**| |--|--|--|--|--| | 13% | [glterrain](https://firefox-source-docs.mozilla.org/testing/perfdocs/talos.html#glterrain) | windows10-64-qr | e10s stylo webgl-ipc webrender | 1.84 -> 2.08 | | 12% | [glterrain](https://firefox-source-docs.mozilla.org/testing/perfdocs/talos.html#glterrain) | macosx1015-64-shippable-qr | e10s fission stylo webgl-ipc webrender | 1.82 -> 2.04 | | 11% | [glterrain](https://firefox-source-docs.mozilla.org/testing/perfdocs/talos.html#glterrain) | macosx1015-64-shippable-qr | e10s stylo webrender | 1.82 -> 2.03 | | 11% | [glterrain](https://firefox-source-docs.mozilla.org/testing/perfdocs/talos.html#glterrain) | macosx1015-64-shippable-qr | e10s fission stylo webrender | 1.84 -> 2.04 | | 9% | [glterrain](https://firefox-source-docs.mozilla.org/testing/perfdocs/talos.html#glterrain) | linux1804-64-shippable-qr | e10s stylo webrender | 5.69 -> 6.21 | | 9% | [tscrollx](https://firefox-source-docs.mozilla.org/testing/perfdocs/talos.html#tscrollx) | linux1804-64-shippable-qr | e10s fission stylo webrender-sw | 1.10 -> 1.19 | | 8% | [glterrain](https://firefox-source-docs.mozilla.org/testing/perfdocs/talos.html#glterrain) | macosx1015-64-shippable-qr | e10s stylo webgl-ipc webrender | 1.84 -> 1.99 | | 7% | [glterrain](https://firefox-source-docs.mozilla.org/testing/perfdocs/talos.html#glterrain) | macosx1015-64-shippable-qr | e10s fission stylo webrender-sw | 3.46 -> 3.70 | | 6% | [tp5o_scroll](https://firefox-source-docs.mozilla.org/testing/perfdocs/talos.html#tp5o_scroll) | linux1804-64-shippable-qr | e10s fission stylo webrender-sw | 1.90 -> 2.01 | | 3% | [tscrollx](https://firefox-source-docs.mozilla.org/testing/perfdocs/talos.html#tscrollx) | linux1804-64-shippable-qr | e10s fission stylo webrender | 1.41 -> 1.45 | ### Improvements: | **Ratio** | **Test** | **Platform** | **Options** | **Absolute values (old vs new)**| |--|--|--|--|--| | 10% | [perf_reftest](https://firefox-source-docs.mozilla.org/testing/perfdocs/talos.html#perf_reftest) some-descendants-1.html | linux1804-64-shippable-qr | e10s fission stylo webrender-sw | 4.68 -> 4.20 | | 5% | [tart](https://firefox-source-docs.mozilla.org/testing/perfdocs/talos.html#tart) | macosx1015-64-shippable-qr | e10s fission stylo webrender | 2.11 -> 1.99 | | 5% | [tart](https://firefox-source-docs.mozilla.org/testing/perfdocs/talos.html#tart) | windows10-64-shippable-qr | e10s fission stylo webrender-sw | 2.49 -> 2.35 | | 5% | [tart](https://firefox-source-docs.mozilla.org/testing/perfdocs/talos.html#tart) | windows10-64-shippable-qr | e10s fission stylo webrender | 2.59 -> 2.47 | | 4% | [tart](https://firefox-source-docs.mozilla.org/testing/perfdocs/talos.html#tart) | macosx1015-64-shippable-qr | e10s fission stylo webrender-sw | 2.02 -> 1.93 | | 2% | [tresize](https://firefox-source-docs.mozilla.org/testing/perfdocs/talos.html#tresize) | linux1804-64-shippable-qr | e10s fission stylo webrender | 17.53 -> 17.10 | Details of the alert can be found in the [alert summary](https://treeherder.mozilla.org/perfherder/alerts?id=33159), 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).
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Perfherder has detected a talos performance regression from push [c55e3a40a4de20482f056a3de9e9823fb8c82768](https://hg.mozilla.org/integration/autoland/pushloghtml?changeset=c55e3a40a4de20482f056a3de9e9823fb8c82768). As author of one of the patches included in that push, we need your help to address this regression. ### Regressions: | **Ratio** | **Test** | **Platform** | **Options** | **Absolute values (old vs new)**| |--|--|--|--|--| | 13% | [glterrain](https://firefox-source-docs.mozilla.org/testing/perfdocs/talos.html#glterrain) | windows10-64-qr | e10s stylo webgl-ipc webrender | 1.84 -> 2.08 | | 12% | [glterrain](https://firefox-source-docs.mozilla.org/testing/perfdocs/talos.html#glterrain) | macosx1015-64-shippable-qr | e10s fission stylo webgl-ipc webrender | 1.82 -> 2.04 | | 11% | [glterrain](https://firefox-source-docs.mozilla.org/testing/perfdocs/talos.html#glterrain) | macosx1015-64-shippable-qr | e10s stylo webrender | 1.82 -> 2.03 | | 11% | [glterrain](https://firefox-source-docs.mozilla.org/testing/perfdocs/talos.html#glterrain) | macosx1015-64-shippable-qr | e10s fission stylo webrender | 1.84 -> 2.04 | | 11% | [glterrain](https://firefox-source-docs.mozilla.org/testing/perfdocs/talos.html#glterrain) | windows10-64-shippable-qr | e10s fission stylo webrender | 1.71 -> 1.90 | | 9% | [glterrain](https://firefox-source-docs.mozilla.org/testing/perfdocs/talos.html#glterrain) | linux1804-64-shippable-qr | e10s stylo webrender | 5.69 -> 6.21 | | 9% | [tscrollx](https://firefox-source-docs.mozilla.org/testing/perfdocs/talos.html#tscrollx) | linux1804-64-shippable-qr | e10s fission stylo webrender-sw | 1.10 -> 1.19 | | 8% | [glterrain](https://firefox-source-docs.mozilla.org/testing/perfdocs/talos.html#glterrain) | macosx1015-64-shippable-qr | e10s stylo webgl-ipc webrender | 1.84 -> 1.99 | | 7% | [glterrain](https://firefox-source-docs.mozilla.org/testing/perfdocs/talos.html#glterrain) | macosx1015-64-shippable-qr | e10s fission stylo webrender-sw | 3.46 -> 3.70 | | 6% | [tp5o_scroll](https://firefox-source-docs.mozilla.org/testing/perfdocs/talos.html#tp5o_scroll) | linux1804-64-shippable-qr | e10s fission stylo webrender-sw | 1.90 -> 2.01 | | 3% | [tscrollx](https://firefox-source-docs.mozilla.org/testing/perfdocs/talos.html#tscrollx) | linux1804-64-shippable-qr | e10s fission stylo webrender | 1.41 -> 1.45 | ### Improvements: | **Ratio** | **Test** | **Platform** | **Options** | **Absolute values (old vs new)**| |--|--|--|--|--| | 10% | [perf_reftest](https://firefox-source-docs.mozilla.org/testing/perfdocs/talos.html#perf_reftest) some-descendants-1.html | linux1804-64-shippable-qr | e10s fission stylo webrender-sw | 4.68 -> 4.20 | | 5% | [tart](https://firefox-source-docs.mozilla.org/testing/perfdocs/talos.html#tart) | macosx1015-64-shippable-qr | e10s fission stylo webrender | 2.11 -> 1.99 | | 5% | [tart](https://firefox-source-docs.mozilla.org/testing/perfdocs/talos.html#tart) | windows10-64-shippable-qr | e10s fission stylo webrender-sw | 2.49 -> 2.35 | | 5% | [tart](https://firefox-source-docs.mozilla.org/testing/perfdocs/talos.html#tart) | windows10-64-shippable-qr | e10s fission stylo webrender | 2.59 -> 2.47 | | 4% | [tart](https://firefox-source-docs.mozilla.org/testing/perfdocs/talos.html#tart) | macosx1015-64-shippable-qr | e10s fission stylo webrender-sw | 2.02 -> 1.93 | | 2% | [tresize](https://firefox-source-docs.mozilla.org/testing/perfdocs/talos.html#tresize) | linux1804-64-shippable-qr | e10s fission stylo webrender | 17.53 -> 17.10 | Details of the alert can be found in the [alert summary](https://treeherder.mozilla.org/perfherder/alerts?id=33159), 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).