1655744 - 3.68 - 28.46% allrecipes / espn / microsoft-support (android-hw-g5-7-0-arm7-api-16-shippable) regression on push e18fd69f2a0b154ec756a871c9990325e0b0c7c9 (Tue July 21 2020)

Status: RESOLVED WONTFIX

(Core :: Performance, defect)

Description

[Florin Strugariu [:Bebe]]

Perfherder has detected a browsertime performance regression from push e18fd69f2a0b154ec756a871c9990325e0b0c7c9. As author of one of the patches included in that push, we need your help to address this regression.

Regressions:

28% microsoft-support android-hw-g5-7-0-arm7-api-16-shippable opt cold 1,721.52 -> 2,211.40
28% microsoft-support android-hw-g5-7-0-arm7-api-16-shippable opt cold 1,735.42 -> 2,226.80
17% espn loadtime android-hw-g5-7-0-arm7-api-16-shippable opt cold 4,538.71 -> 5,318.88
13% microsoft-support fcp android-hw-g5-7-0-arm7-api-16-shippable opt cold 2,477.17 -> 2,805.79
13% microsoft-support FirstVisualChange android-hw-g5-7-0-arm7-api-16-shippable opt cold 2,471.58 -> 2,791.83
12% microsoft-support SpeedIndex android-hw-g5-7-0-arm7-api-16-shippable opt cold 2,567.50 -> 2,886.67
11% microsoft-support PerceptualSpeedIndex android-hw-g5-7-0-arm7-api-16-shippable opt cold 2,745.12 -> 3,057.50
11% espn android-hw-g5-7-0-arm7-api-16-shippable opt cold 3,168.33 -> 3,514.69
10% microsoft-support ContentfulSpeedIndex android-hw-g5-7-0-arm7-api-16-shippable opt cold 2,949.33 -> 3,256.83
10% espn PerceptualSpeedIndex android-hw-g5-7-0-arm7-api-16-shippable opt cold 6,465.67 -> 7,135.67
10% espn FirstVisualChange android-hw-g5-7-0-arm7-api-16-shippable opt cold 5,724.96 -> 6,317.25
10% espn SpeedIndex android-hw-g5-7-0-arm7-api-16-shippable opt cold 6,593.42 -> 7,268.92
10% espn ContentfulSpeedIndex android-hw-g5-7-0-arm7-api-16-shippable opt cold 5,755.04 -> 6,332.08
10% espn fcp android-hw-g5-7-0-arm7-api-16-shippable opt cold 5,681.25 -> 6,234.17
9% microsoft-support loadtime android-hw-g5-7-0-arm7-api-16-shippable opt cold 3,014.90 -> 3,290.96
8% allrecipes FirstVisualChange android-hw-g5-7-0-arm7-api-16-shippable opt cold 1,461.50 -> 1,574.50
7% espn PerceptualSpeedIndex android-hw-g5-7-0-arm7-api-16-shippable opt cold 6,548.21 -> 7,030.50
7% allrecipes fcp android-hw-g5-7-0-arm7-api-16-shippable opt cold 1,442.25 -> 1,547.04
6% allrecipes android-hw-g5-7-0-arm7-api-16-shippable opt cold 1,911.62 -> 2,024.84
4% allrecipes PerceptualSpeedIndex android-hw-g5-7-0-arm7-api-16-shippable opt cold 3,307.83 -> 3,437.83
4% allrecipes SpeedIndex android-hw-g5-7-0-arm7-api-16-shippable opt cold 3,505.29 -> 3,634.25

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.

Comment 1

[BugBot [:suhaib / :marco/ :calixte]]

Set release status flags based on info from the regressing bug 1654357

Comment 2

[Olli Pettay [:smaug][[e-mail]]]

This is just about disabling a feature which was enabled a bit earlier.
This doesn't need to be tracked as such.