[Webkit-unassigned] [Bug 56460] New: Web Inspector [JSC]: Provide information about DOM subtrees in Heap profiles

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=56460

           Summary: Web Inspector [JSC]: Provide information about DOM
                    subtrees in Heap profiles
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: All
        OS/Version: All
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: Web Inspector
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: mnaganov at chromium.org
                CC: timothy at apple.com, rik at webkit.org, keishi at webkit.org,
                    pmuellr at yahoo.com, joepeck at webkit.org,
                    pfeldman at chromium.org, yurys at chromium.org,
                    bweinstein at apple.com, apavlov at chromium.org,
                    loislo at chromium.org
            Blocks: 50485


When searching for memory leaks in JavaScript application, besides looking at VM memory usage, it's also worth looking at DOM subtrees (and other related objects like CSS, XHRs) from native heap that are being held from JS side. JS wrappers are usually small and doesn't attract much attention. But if it will be visible that a small JS wrapper holds a 1000-nodes tree, a developer will be able to see a problem here.

See https://bugs.webkit.org/show_bug.cgi?id=53659 for a sample implementation.

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