1831572 - Enable eager baseline hints for all channels

Status: RESOLVED FIXED

(Core :: JavaScript Engine: JIT, enhancement)

Description

[Denis Palmeiro [:denispal]]

Bug 1824772 added an eager baseline hints cache to the process. The perf alert for this change can be found here https://treeherder.mozilla.org/perfherder/alerts?id=38234 which looks reasonable in terms of trade off. Telemetry from the page load events seems to have improved slightly (1-3%), but there is no negative impact observed so I think it's safe to enable this on all channels.

Comment 1

[Denis Palmeiro [:denispal]]

Attachment: Bug 1831572: Enable javascript.options.jithints pref for all channels. r=iain!

Comment 2

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/2340626733b9
Enable javascript.options.jithints pref for all channels. r=iain

Comment 3

[Iulian Moraru]

https://hg.mozilla.org/mozilla-central/rev/2340626733b9

Comment 4

[Alexandru Ionescu (needinfo me) [:alexandrui]]

(In reply to Pulsebot from comment #2)

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/2340626733b9
Enable javascript.options.jithints pref for all channels. r=iain

== Change summary for alert #38311 (as of Tue, 09 May 2023 03:08:14 GMT) ==

Improvements:

Ratio	Test	Platform	Options	Absolute values (old vs new)	Performance Profiles
9%	speedometer3	linux1804-64-nightlyasrelease-qr	fission webrender	158.36 -> 172.07	Before/After
8%	speedometer3	windows10-64-nightlyasrelease-qr	fission webrender	227.93 -> 247.17	Before/After
6%	speedometer	windows10-64-nightlyasrelease-qr	fission webrender	141.63 -> 150.40
5%	speedometer	linux1804-64-nightlyasrelease-qr	fission webrender	97.44 -> 102.44

For up to date results, see: https://treeherder.mozilla.org/perfherder/alerts?id=38311