[Webkit-unassigned] [Bug 158906] New: REGRESSION(concurrent baseline JIT): Kraken/ai-astar runs 20% slower

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=158906

            Bug ID: 158906
           Summary: REGRESSION(concurrent baseline JIT): Kraken/ai-astar
                    runs 20% slower
    Classification: Unclassified
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: All
                OS: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: fpizlo at apple.com

So far this looks like it's because the baseline compile of the search# is delayed by >10ms.  I'm still investigating why

I do know that it's only the decision to compile baseline code concurrently that causes the slow-down, and not any of the other changes in the patch.

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