102696 – 2.5% regression on page cycler moz

Bug 102696 - 2.5% regression on page cycler moz

Summary: 2.5% regression on page cycler moz

Status:	RESOLVED DUPLICATE of bug 102822

Alias:	None

Product:	WebKit
Classification:	Unclassified
Component:	Page Loading (show other bugs)
Version:	528+ (Nightly build)
Hardware:	Unspecified Unspecified

Importance:	P2 Normal
Assignee:	Nobody

URL:
Keywords:

Depends on:
Blocks:

Reported:	2012-11-19 09:41 PST by Ojan Vafai
Modified:	2012-11-26 17:17 PST (History)
CC List:	4 users (show)

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Description Ojan Vafai 2012-11-19 09:41:01 PST

http://build.chromium.org/f/chromium/perf/chromium-rel-win7-webkit/moz/report.html?rev=168779&graph=times&history=50

http://build.chromium.org/f/chromium/perf/mac-release-10.6-webkit-latest/moz/report.html?rev=168757&graph=times&history&history=50

It's almost certainly not something on the Chromium side: http://build.chromium.org/f/chromium/perf/dashboard/ui/changelog.html?url=/trunk/src&mode=html&range=168480:168481

Which leaves the following WebKit regression range: http://trac.webkit.org/log/?verbose=on&rev=135087&stop_rev=135083

It seems it must be one of the 3 V8 changes in that range.

Comment 1 Adam Barth 2012-11-19 12:33:17 PST

The V8 changes in that range aren't supposed to change the generated code at all.  If there's a behavior change, that's likely a mistake.

Comment 2 Ojan Vafai 2012-11-26 17:17:53 PST


*** This bug has been marked as a duplicate of bug 102822 ***