[Webkit-unassigned] [Bug 171019] New: Tune GC related JSC options for iOS

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Wed Apr 19 16:02:17 PDT 2017


            Bug ID: 171019
           Summary: Tune GC related JSC options for iOS
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: msaboff at apple.com

Empirical tests show that iOS devices perform better with the options values overridden for a smaller number of cores in Options.cpp:overrideDefaults().

These are the options in question:
    Options::maximumMutatorUtilization() = 0.6;
    Options::concurrentGCMaxHeadroom() = 1.4;
    Options::minimumGCPauseMS() = 1;
    Options::useStochasticMutatorScheduler() = false;


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