[Webkit-unassigned] [Bug 71522] New: JSC should be able to sample itself in a more flexible way than just sampling flags

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=71522

           Summary: JSC should be able to sample itself in a more flexible
                    way than just sampling flags
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: fpizlo at apple.com


Sampling flags are one of our most precise ways of measuring system overheads.  But they are painfully low-level.  Numbers from a narrow range need to be ascribed to each region of code being sampled.  Hierarchical views of the data are not possible.  JSC should have a more general way of doing sampling.

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