[Webkit-unassigned] [Bug 98281] New: Add a performance test for subtree detaching

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=98281

           Summary: Add a performance test for subtree detaching
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Tools / Tests
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: jchaffraix at webkit.org
                CC: eric at webkit.org, simon.fraser at apple.com,
                    rniwa at webkit.org
            Blocks: 92697


Currently we don't have a test stressing only detaching. When tested, it is usually done in combination with other phases such as layout without thinking about the interactions.

This is important as our current detaching algorithm is inefficient, leading to several traversal to the root as we generate multiple repaints. See bug 92697 for example where Eric came to the same conclusion.

I would like to change how we detach thus the need for some performance coverage.

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