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  1. Qt
  2. QTBUG-87338

image scaling example freezes

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: Not Evaluated
    • Resolution: Duplicate
    • Affects Version/s: 5.15.0
    • Fix Version/s: 5.15.1
    • Component/s: Core: QtConcurrent
    • Labels:
      None
    • Environment:
      Windows 10 Pro, 1903, 18362.1016
      Qt 5.15.0
      MSVC2019
      Nvidia GT 1030
      AMD Ryzen 5 1600
    • Platform/s:
      Windows
    • Commits:
      9d2b474b5f6aa07ee731d28f9774d10dfaa49b32

      Description

      [image scaling example freezes|https://forum.qt.io/topic/119796/image-scaling-example-freezes-qt-concurrent-issue]

      The official Image Scaling Example freezes if 12 or more files are selected.

       

      If I disable CPU SMT feature, then the app freezes when 6 image files are selected.

      If the number of image files is less than the number or CPU logical cores, the app works normally.

      Debug shows the all work threads block.

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          duplicates

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-84619 Use of global thread pool for image conversion is changes behavior in Qt5.15

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed
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            Activity

              People

              Assignee:
              sonakur Sona Kurazyan
              Reporter:
              caesun caesun
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                Dates

                Created:
                Updated:
                Resolved:

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