1738241 - 48.65 - 11.59% Heap Unclassified / Resident Memory + 2 more (Linux) regression on Mon October 25 2021

Status: RESOLVED FIXED

(Core :: Graphics: WebRender, defect)

Description

[Acasandrei Beatrice (needinfo me)]

Perfherder has detected a awsy performance regression from push 042a934005b6594adf674954768c26e564bf8749. 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)
49%	Heap Unclassified	linux1804-64-shippable-qr	tp6	218,313,003.50 -> 324,528,618.56
40%	Heap Unclassified	linux1804-64-shippable-qr	tp6	217,931,942.67 -> 305,750,245.03
15%	Explicit Memory	linux1804-64-shippable-qr	tp6	816,514,835.40 -> 935,680,767.80
12%	Resident Memory	linux1804-64-shippable-qr	tp6	1,199,333,675.59 -> 1,338,307,437.84

Improvements:

Ratio	Test	Platform	Options	Absolute values (old vs new)
22%	JS	linux1804-64-shippable-qr	tp6	259,892,586.17 -> 202,469,176.34

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 1696842

Comment 2

[Glenn Watson [:gw]]

Fixed by backing out the regressing patch, for now.