1772553 - 5% perf_reftest_singletons coalesce-1.html (OSX) regression on Mon May 30 2022

Status: RESOLVED FIXED

(Core :: DOM: Core & HTML, defect)

Description

[Andrej (:aglavic)]

Perfherder has detected a talos performance regression from push e2dd95957747d2098c9e67c89d19c57efe5bbb97. 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)
16%	perf_reftest coalesce-1.html	macosx1015-64-shippable-qr	e10s fission stylo webrender-sw	60.12 -> 69.53
14%	perf_reftest coalesce-1.html	linux1804-64-shippable-qr	e10s fission stylo webrender	69.70 -> 79.73
14%	perf_reftest coalesce-1.html	windows10-64-shippable-qr	e10s fission stylo webrender	63.44 -> 72.55
13%	perf_reftest coalesce-1.html	windows10-64-shippable-qr	e10s fission stylo webrender-sw	63.52 -> 71.90
6%	perf_reftest_singletons coalesce-1.html	macosx1015-64-shippable-qr	e10s fission stylo webrender	163.24 -> 172.68
6%	perf_reftest_singletons coalesce-1.html	linux1804-64-shippable-qr	e10s fission stylo webrender	180.49 -> 190.79
5%	perf_reftest_singletons coalesce-1.html	macosx1015-64-shippable-qr	e10s fission stylo webrender	163.80 -> 171.99

For up to date results, see: https://treeherder.mozilla.org/perfherder/alerts?id=34293

Comment 1

[Jon Coppeard (:jonco)]

The regressing change was backed out for other reasons so this should be fixed.