Closed Bug 1710656 Opened 4 years ago Closed 4 years ago

10.03 - 2.29% allrecipes LastVisualChange / google-docs SpeedIndex + 1 more (Android, Linux) regression on Fri May 7 2021

Categories

(Firefox Build System :: Toolchains, defect)

Product:
Firefox Build System
Component:
Toolchains
Type:
defect

Tracking

(firefox90 affected)

Status:
RESOLVED WONTFIX
Tracking Flags:
Tracking Status
firefox90 --- affected

People

(Reporter: Bebe, Unassigned)

References

(Regression)

Details

(Keywords: perf, perf-alert, regression)

Perfherder has detected a browsertime performance regression from push 78f1c890320163488bc5dd7753b05ec677db3d43. 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)
10% allrecipes LastVisualChange android-hw-g5-7-0-arm7-api-16-shippable warm 7,672.88 -> 8,442.17
3% google-docs ContentfulSpeedIndex linux1804-64-shippable cold 2,168.12 -> 2,237.92
2% google-docs SpeedIndex linux1804-64-shippable cold 1,768.47 -> 1,808.92

Improvements:

Ratio Suite Test Platform Options Absolute values (old vs new)
14% google-docs FirstVisualChange linux1804-64-shippable warm 280.00 -> 240.00
12% google-docs FirstVisualChange windows10-64-shippable warm 273.68 -> 240.00
12% google-docs FirstVisualChange windows10-64-shippable warm 276.67 -> 243.33
11% google-docs FirstVisualChange linux1804-64-shippable warm 269.47 -> 240.00
10% reddit fnbpaint windows10-64-shippable-qr cold webrender 224.38 -> 202.33
... ... ... ... ... ...
2% google-mail FirstVisualChange windows10-64-shippable-qr warm webrender 1,231.75 -> 1,205.50

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.

Flags: needinfo?(mh+mozilla)

Eyeballing the corresponding graphs for the last 30 days,

| 10% | allrecipes | LastVisualChange | android-hw-g5-7-0-arm7-api-16-shippable | warm | 7,672.88 -> 8,442.17 |

It seems this one somehow got some benefit from bug 1697215, but got back to the performance levels from before. Obviously, this means there's room for optimization improvements, but considering we're not worse than what we were 2 weeks ago, I'd say let's ignore it.

| 3% | google-docs | ContentfulSpeedIndex | linux1804-64-shippable | cold | 2,168.12 -> 2,237.92 |

It seems used to be bimodal before bug 1697215, somehow stopped being bimodal until bug 1708379 and is now bimodal again.

| 2% | google-docs | SpeedIndex | linux1804-64-shippable | cold | 1,768.47 -> 1,808.92 |

It seems there is a large variance that makes this one unreliable.

Status: NEW → RESOLVED
Closed: 4 years ago
Flags: needinfo?(mh+mozilla)
Resolution: --- → WONTFIX
Has Regression Range: --- → yes
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