[Webkit-unassigned] [Bug 106108] [WK2] WebProcess become unresponsive while running layout tests

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=106108


Ryosuke Niwa <rniwa at webkit.org> changed:

           What    |Removed                     |Added
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                 CC|                            |simon.fraser at apple.com




--- Comment #4 from Ryosuke Niwa <rniwa at webkit.org>  2013-03-20 00:57:22 PST ---
Now that we have Simon's sampling feature checked in, we have a little more insight:

e.g.
http://build.webkit.org/results/Apple%20MountainLion%20Debug%20WK2%20(Tests)/r146305%20(7948)/results.html

http://build.webkit.org/results/Apple%20MountainLion%20Debug%20WK2%20(Tests)/r146305%20(7948)/fast/events/platform-wheelevent-in-scrolling-div-sample.txt

It seems like we're stuck in the middle of mark & sweep. I've seen similar sample data for unresponsive WebProcesses on multiple times.  Perhaps UIProcess is prematurely deciding WebProcess to be unresponsive during mark & sweep?

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