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  1. Qt Creator
  2. QTCREATORBUG-26829

QtcProcess is slower than QProcess

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    • Icon: Bug Bug
    • Resolution: Done
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    • Qt Creator 6.0.2
    • Qt Creator 6.0.0
    • All Other Issues
    • None
    • macOS, Windows
    • bcee5c5dc4 (qt-creator/qt-creator/6.0) bcee5c5dc4 (qt-creator/qt-creator/master) bcee5c5dc4 (qt-creator/qt-creator/qmlprojectstorage) bcee5c5dc4 (qt-creator/qt-creator/qds-3.0)

      At https://bugreports.qt.io/browse/QTCREATORBUG-26754 we could see that by using QtcProcess insted of QProcess the ProcessCreator in Clangsupport was 3-4x slower on Windows, and 8x slower on macOS.

      This means that the slowness can happen on other processes started using QtcProcess but not easily noticeable as the C++ code completion.

       

        For Gerrit Dashboard: QTCREATORBUG-26829
        # Subject Branch Project Status CR V
        388756,2 Revert "Revert "Use QtcProcess for clangbackend"" 6.0 qt-creator/qt-creator Status: MERGED +2 0
        388757,2 ClangCodeModel: Fix performance regression of code completion 6.0 qt-creator/qt-creator Status: MERGED -1 0

            con Eike Ziller
            cadam Cristian Adam
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              Created:
              Updated:
              Resolved:

                There are no open Gerrit changes