[Webkit-unassigned] [Bug 100872] [v8] r132913 caused a bunch of performance regressions and progressions

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=100872





--- Comment #5 from Ojan Vafai <ojan at chromium.org>  2012-11-01 10:09:29 PST ---
It's hard to be sure, but I think this patch greatly increase the variance of http://build.chromium.org/f/chromium/perf/linux-release-webkit-latest/dom_perf/report.html?rev=165238&graph=Get%20Elements&history=150. When it performs poorly it's a 60% regression.

I really think we need to rollout until this is better understood. Having high variance like this makes it impossible to identify future regressions.

It's hard to know for sure it was this patch, but this was the most likely candidate and a rollout would confirm.

-- 
Configure bugmail: https://bugs.webkit.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.