[Webkit-unassigned] [Bug 180282] New: Increased flakiness in layout tests when timer latency increased.

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Fri Dec 1 14:27:28 PST 2017


https://bugs.webkit.org/show_bug.cgi?id=180282

            Bug ID: 180282
           Summary: Increased flakiness in layout tests when timer latency
                    increased.
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Tools / Tests
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: pvollan at apple.com
                CC: lforschler at apple.com

This is maybe expected, but when I experimented with making the WebContent process run [NSRunLoop run] instead of [NSApplication run], the timer latency increased because the priority of the WebContent process became lower. This increased the layout test flakiness. Ideally, the layout test results should not depend too much on timer latency. Perhaps we should drain the message queue between each test?

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