Bug 94175

Summary: [Chromium] Compositor hangs while updating resources if vsync is disabled.
Product: WebKit Reporter: David Reveman <reveman>
Component: WebCore Misc.Assignee: Nobody <webkit-unassigned>
Status: RESOLVED DUPLICATE    
Severity: Normal CC: brianderson, jbates, nduca
Priority: P2    
Version: 528+ (Nightly build)   
Hardware: Unspecified   
OS: Unspecified   

Description David Reveman 2012-08-15 20:00:02 PDT 
Looks like manual vsync ticks are not generated when scheduler is updating resources. This happens when there's nothing to draw but resources to update. To reproduce go to a page that generates more than 48 resource updates per frame. E.g. http://www.corp.google.com/~reveman/texture-uploads/test.html with the browser window relatively large.    Or it will reproduce on any composited page after lowering the textureUpdatesPerFrame constant in CCTextureUpdateController.cpp to 5.
Comment 1 John Bates 2012-08-15 20:43:15 PDT 
I think Brian just fixed this today, or has a fix in progress: https://bugs.webkit.org/show_bug.cgi?id=94012
Comment 2 David Reveman 2012-08-15 20:47:00 PDT 
yup, that's the same issue. thanks.

*** This bug has been marked as a duplicate of bug 94012 ***