[Webkit-unassigned] [Bug 78070] New: REGRESSION(106741+106756?): Page Cycler Moz regression

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=78070

           Summary: REGRESSION(106741+106756?): Page Cycler Moz regression
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Tools / Tests
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: jchaffraix at webkit.org
                CC: rniwa at webkit.org, kling at webkit.org, tonyg at chromium.org


Using our integration bots (following WebKit and Chromium ToT) did catch up the regression but we did not hear them (not on WebKit:

http://build.chromium.org/f/chromium/perf/mac-release-10.6-webkit-latest/moz/report.html?history=150&rev=-1

You can see 2 spikes (the revision number is written on the bottom left side of the graph):
* first one at r120492
* second one at r120514

I have found out which one corresponds to each build:
* first one -> http://build.chromium.org/p/chromium.webkit/builders/Mac10.6%20Perf/builds/6206
* second one -> http://build.chromium.org/p/chromium.webkit/builders/Mac10.6%20Perf/builds/6212

A chromium change could have regressed everything though we doubt it as rolling back WebKit removed the regression.

First spike points at http://trac.webkit.org/changeset/106741.

Second spike seems to point at http://trac.webkit.org/changeset/106756 (there is another change so I am not 100% sure).

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