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  1. Qt
  2. QTBUG-71778

QWidget::update() performance regression macOS

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: P1: Critical
    • Resolution: Done
    • Affects Version/s: 5.11.2, 5.12.0 Beta 4, 5.12.0, 5.13.0 Beta 1
    • Fix Version/s: None
    • Component/s: QPA: Other
    • Labels:
      None
    • Environment:
      macOS 10.14, retina display
    • Platform/s:
      macOS

      Description

      The performance regression of QTBUG-59701 is back. The delay between calling update and the paintEvent is significantly longer again: up to 100ms in Qt 5.12 (Qt 5.10: <35ms). See QTBUG-59701 for sources of a minimalistic application to reproduce.

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            • Assignee:
              vestbo Tor Arne Vestbø
              Reporter:
              drew Drew
            • Votes:
              5 Vote for this issue
              Watchers:
              8 Start watching this issue

              Dates

              • Created:
                Updated:
                Resolved:

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