84.62 - 2.57% welcome FirstVisualChange / welcome LastVisualChange + 10 more (OSX, Windows) regression on Tue August 10 2021
Categories
(Core :: DOM: Navigation, defect)
Tracking
()
| Tracking | Status | |
|---|---|---|
| firefox93 | --- | affected |
People
(Reporter: aesanu, Unassigned)
References
(Regression)
Details
(Keywords: perf, perf-alert, regression)
Perfherder has detected a browsertime performance regression from push a7bfb6ebedc58c477df4dddf827821b316cabef3. 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) |
|---|---|---|---|---|
| 85% | welcome FirstVisualChange | windows10-64-shippable-qr | warm webrender | 43.33 -> 80.00 |
| 55% | welcome loadtime | macosx1014-64-shippable-qr | warm webrender | 24.38 -> 37.75 |
| 33% | welcome loadtime | windows10-64-shippable-qr | warm webrender | 23.29 -> 31.00 |
| 24% | welcome fnbpaint | macosx1014-64-shippable-qr | warm webrender | 44.00 -> 54.67 |
| 21% | welcome SpeedIndex | windows10-64-shippable-qr | warm webrender | 165.62 -> 201.08 |
| 21% | welcome loadtime | macosx1015-64-shippable-qr | warm webrender | 20.19 -> 24.42 |
| 21% | welcome loadtime | macosx1015-64-shippable-qr | warm webrender | 20.25 -> 24.46 |
| 16% | welcome fnbpaint | windows10-64-shippable-qr | warm webrender | 37.94 -> 44.08 |
| 9% | welcome PerceptualSpeedIndex | windows10-64-shippable-qr | warm webrender | 405.17 -> 442.58 |
| 7% | welcome ContentfulSpeedIndex | windows10-64-shippable-qr | warm webrender | 488.04 -> 521.83 |
| 3% | welcome ContentfulSpeedIndex | macosx1015-64-shippable-qr | warm webrender | 1,544.84 -> 1,586.17 |
| 3% | welcome LastVisualChange | windows10-64-shippable-qr | warm webrender | 2,336.67 -> 2,396.67 |
Details of the alert can be found in the alert summary, including links to graphs and comparisons for each of the affected tests. Please follow our guide to 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.
For more information on performance sheriffing please see our FAQ.
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Reporter | |
Comment 1•4 years ago
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Perfherder has detected a talos performance regression from push a7bfb6ebedc58c477df4dddf827821b316cabef3. 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) |
|---|---|---|---|---|
| 17% | about_preferences_basic | macosx1015-64-shippable-qr | e10s stylo webrender | 83.08 -> 97.49 |
| 17% | about_preferences_basic | macosx1015-64-shippable-qr | e10s stylo webrender | 83.51 -> 97.55 |
| 15% | about_preferences_basic | macosx1015-64-shippable-qr | e10s stylo webrender | 83.86 -> 96.65 |
Details of the alert can be found in the alert summary, including links to graphs and comparisons for each of the affected tests. Please follow our guide to 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.
For more information on performance sheriffing please see our FAQ.
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Comment 2•4 years ago
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This is the same underlying issue as bug 1725270. The about:blank loads between each warm page load now trigger a process switch as we explicitly load it within a specific process. To mitigate this issue in the long run these tests will need to be updated to replace these about:blank loads with some other document, however I have a test-only pref in a patch on that bug which can help mitigate the underlying issue.
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Updated•4 years ago
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Description
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