Bug 103791

Summary:	[v8?] DOM traversal test became bimodal
Product:	WebKit	Reporter:	Ojan Vafai <ojan>
Component:	DOM	Assignee:	Nobody <webkit-unassigned>
Status:	RESOLVED WONTFIX
Severity:	Normal	CC:	abarth, andersca, haraken
Priority:	P2
Version:	528+ (Nightly build)
Hardware:	Unspecified
OS:	Unspecified

Description Ojan Vafai 2012-11-30 17:02:10 PST

Range: http://trac.webkit.org/log/?verbose=on&rev=136017&stop_rev=136010

Could it possibly be http://trac.webkit.org/changeset/136015/ ?

http://build.chromium.org/f/chromium/perf/mac-release-10.6-webkit-latest/dom_perf/report.html?rev=170457&graph=DOMDivWalk&history=50

http://build.chromium.org/f/chromium/perf/mac-release-10.6-webkit-latest/dom_perf/report.html?rev=170457&graph=DOMDivWalk&history=50

http://build.chromium.org/f/chromium/perf/mac-release-10.6-webkit-latest/dromaeo_domcoretraverse/report.html?rev=170457&graph=dom_traverse_nextSibling&history=50

Comment 1 Ojan Vafai 2012-11-30 17:07:28 PST

Actually, it looks like it might be an actual regression.

http://build.chromium.org/f/chromium/perf/mac-release-10.6/dromaeo_domcoretraverse/report.html?history=90&rev=170138&graph=dom_traverse_previousSibling

Comment 2 Adam Barth 2012-12-01 16:15:12 PST

Ok.  Let's roll http://trac.webkit.org/changeset/136015/ out.  It adds an instruction into a host code path, which is why I made the original change.

Comment 3 Adam Barth 2012-12-01 16:35:31 PST

Rolled out in http://trac.webkit.org/changeset/136313.  Let's see if that heals the bots.

Comment 4 Anders Carlsson 2013-09-12 22:37:32 PDT

V8 is gone.