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  1. Qt
  2. QTBUG-26361

QML TextEdit uses too much CPU on Mac

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Details

    • macOS

    Description

      Run the attached QML file, and launch System Monitor. qmlscene takes around 20% CPU even while doing nothing (no cursor blinking, no nothing).

      This seems to be related to calling d->document->markContentsDirty() twice in QQuickTextEdit::updatePaintNode(). Commenting out those calls brings qmlscene's CPU load back to 0%. No weird behaviors have been observed, so maybe this is not needed anymore?

      Attachments

        For Gerrit Dashboard: QTBUG-26361
        # Subject Branch Project Status CR V
        29932,1 Fix high CPU load for Qml TextEdit on Mac master qt/qtdeclarative Status: MERGED +2 0
        30528,1 Remove unneeded mac specific code in QQuickText master qt/qtdeclarative Status: MERGED +2 0

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          People

            bodson Yann Bodson (Inactive)
            dedietri Gabriel de Dietrich (drgvond)
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            Dates

              Created:
              Updated:
              Resolved:

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