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  1. Qt
  2. QTBUG-61368

QStandardItemModel: When there is a lot of rows in a QTreeView, then doing a selectAll(), followed by expanding some items then selectAll() again can cause a performance hit

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    • 74be42ca598c4f13486191c0b8c58bee3d1f1090 e3a1b18bc3e213c318107b84b07543d945b48514

    Description

      QStandardItemModel: When there is a lot of rows in a QTreeView, then doing a selectAll(), followed by expanding some items then selectAll() again can cause a performance hit. The first selectAll() is relatively fast, but the second can take considerably longer.

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        1. qtbug61368.zip
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        2. qtbug61368.zip
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        Issue Links

          resulted in

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-78324 [REG] Add and remove rows much slower in 5.12.x versus 5.11.x

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed
          For Gerrit Dashboard: QTBUG-61368
          # Subject Branch Project Status CR V
          227354,5 ItemModels: search for the child index in 2 directions 5.11 qt/qtbase Status: MERGED +2 0
          227355,8 ItemModels: Cache last-known child index 5.11 qt/qtbase Status: MERGED +2 0

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              erikv Erik Verbruggen
              andysh Andy Shaw
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              Dates

                Created:
                Updated:
                Resolved:

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