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  1. Qt
  2. QTBUG-84873

QML memory allocation

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: Not Evaluated
    • Resolution: Incomplete
    • Affects Version/s: 5.15.0
    • Fix Version/s: None
    • Labels:
      None
    • Platform/s:
      Windows

      Description

      During the creation of the eloborate GUI with autoscaling, I stumbled upon the low performance issue, when all components change their properties (size, color, font) at the same time. To find the cause of the issue I created a simple project (benchmark). Scene dynamically creates a certain amount of graphical primitives, which change their properties each frame. I found a bug with memory reallocation. To be exact, if there is a text component on the scene and its properties change each frame, it leads to contineous growth of the RAM usage. I suppose it demostrates the memory leak issue. If you try the same test with rectangle component you won't have this issue.

      Link below forwards to the video where you can see the issue yourself. In the attachement you can find the project of the application demostrated on the video.

      If you want to test it yourself, please compile the project and repeat what I did in the video.

      video: https://yadi.sk/i/0QvVZEzYNauvqw

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          Activity

            People

            Assignee:
            lagocs Laszlo Agocs
            Reporter:
            valera_m Valery Mikhaylovsky
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              Dates

              Created:
              Updated:
              Resolved:

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