[Webkit-unassigned] [Bug 45664] New: Web Inspector: [Resources panel] Timing accuracy.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=45664

           Summary: Web Inspector: [Resources panel] Timing accuracy.
           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: pfeldman 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, loislo at chromium.org


I set up a test page with two images followed by a JavaScript block which executes a script for 5 seconds in a tight loop. In Firebug, the images are correctly shown loading in parallel. In Chrome, the first image stop load time and the second image start show as after the tight loop finishes. It seems that long-running JavaScript code makes the timings in the resources panel inaccurate. Firebug used to have similar problems, but they were fixed. See this blog post for more information: http://www.softwareishard.com/blog/firebug/firebug-http-time-monitor/.

See images attached.

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