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  1. Qt
  2. QTBUG-103187

Reconfiguration is slow due to qmlimportscanner

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Details

    • Bug
    • Resolution: Done
    • P2: Important
    • 6.4.0 Beta1
    • 6.2.2
    • Build System: CMake, QML: Tooling
    • None
    • Windows 11, visual studio 2019, msvc 16, cmake
    • Windows
    • 2ee7ec4d24 (qt/qtdeclarative/dev) 2ee7ec4d24 (qt/tqtc-qtdeclarative/dev) 2ee7ec4d24 (qt/qtdeclarative/6.4) 2ee7ec4d24 (qt/tqtc-qtdeclarative/6.4) e2a3667e34 (qt/qtdeclarative/6.3) e2a3667e34 (qt/tqtc-qtdeclarative/6.3)

    Description

      When compiling a Qt project, the qmlimportscanner.exe takes roughly 45 seconds to perform its work.
      This happens even when there are no changes in any qml or related code, making every small code change incredibly slow.

      Attachments

        1. Screenshot 2022-05-03 100610.png
          Screenshot 2022-05-03 100610.png
          19 kB
        2. qmlimportscanner
          0.3 kB
        3. perf-graph.txt.gz
          232 kB
        4. perf.txt.gz
          14 kB
        5. importomania.tgz
          1 kB

        Issue Links

          relates to

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-102263 iOS: qmake is very slow in large projects

          • P3: Somewhat important - Should be fixed, but doesn't affect the release in any way.
          • Reported

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-95609 cmake names for qml plugins

          • P3: Somewhat important - Should be fixed, but doesn't affect the release in any way.
          • Closed

          Suggestion - Public suggestions QTBUG-92887 [cmake] qt6_import_qml_plugins without import scanner

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Reported
          resulted in

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-115170 [Reg 5.15 -> 6.5] qmlimportscanner does not include module versions

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Open
          For Gerrit Dashboard: QTBUG-103187
          # Subject Branch Project Status CR V
          412828,14 qmlimportscanner: Improve performance using caches dev qt/qtdeclarative Status: MERGED +2 0
          413225,5 qmlimportscanner: Add logging to help with debugging performance dev qt/qtdeclarative Status: MERGED +2 0
          413235,13 qmlimportscanner: Improve performance using caches continued dev qt/qtdeclarative Status: MERGED +2 0
          413421,3 qmlimportscanner: Ensure deterministic output dev qt/qtdeclarative Status: MERGED +2 0
          414495,2 qmlimportscanner: Ensure deterministic output 6.3 qt/qtdeclarative Status: MERGED +2 0
          414516,3 qmlimportscanner: Add logging to help with debugging performance 6.3 qt/qtdeclarative Status: MERGED +2 0
          414517,3 qmlimportscanner: Improve performance using caches 6.3 qt/qtdeclarative Status: MERGED +2 0
          414518,3 qmlimportscanner: Improve performance using caches continued 6.3 qt/qtdeclarative Status: MERGED +2 0
          414519,3 qmlimportscanner: Ensure deterministic output tqtc/lts-6.2 qt/tqtc-qtdeclarative Status: MERGED +2 0
          414520,3 qmlimportscanner: Add logging to help with debugging performance tqtc/lts-6.2 qt/tqtc-qtdeclarative Status: MERGED +2 0
          414521,3 qmlimportscanner: Improve performance using caches tqtc/lts-6.2 qt/tqtc-qtdeclarative Status: MERGED +2 0
          414522,3 qmlimportscanner: Improve performance using caches continued tqtc/lts-6.2 qt/tqtc-qtdeclarative Status: MERGED +2 0

          Activity

            People

              alexandru.croitor Alexandru Croitor
              mrlolli Luca Lolli
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              Dates

                Created:
                Updated:
                Resolved: