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  1. Qt
  2. QTBUG-34358

Qt Graphics performance problems on Mac OS 10.9 Mavericks

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    • Icon: Bug Bug
    • Resolution: Done
    • Icon: P1: Critical P1: Critical
    • 4.8.6
    • 4.8.5
    • GUI: Graphics Performance
    • None
    • iMac 2.66 GHz, 4GB RAM, NVIDA GeForce 9400 256 MB, OS X 10.9, OS X 10.6.8, OS X 10.8.5
    • macOS
    • 9afc8096fb5395216cd5813fb1859ff45b087d92

      'collidingmice' project from qt sources (examples/qgraphicsview/collidingmice) has been used for testing. It looks like performance on Mac 10.9 is much worse then on previous version of Mac 10.8. Mice move much slower even though processor usage seems to be similar. Only one Mac's process called WindowServer jumps up in usage from 2% to about 22% of CPU where on Mac 10.6 there is almost no difference.

      Attached sampling of collidingmice on 10.8.5 and 10.9.

        1. Sample_of_collidingmice_10.8.txt
          603 kB
          Pawel Kurdybacha
        2. Sample_of_collidingmice_10.9.txt
          519 kB
          Pawel Kurdybacha
        3. Patch.diff
          0.9 kB
          Allan Sandfeld Jensen
        4. Sample_of_collidingmice_10.9_carbon.txt
          429 kB
          Pawel Kurdybacha
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            sorvig Morten Sørvig
            dakron Pawel Kurdybacha
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            3 Vote for this issue
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              Created:
              Updated:
              Resolved:

                There are no open Gerrit changes