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  1. Qt
  2. QTBUG-96890

Qt Quick Framerate Qt5 vs Qt6

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    Details

    • Type: Bug
    • Status: Reported
    • Priority: P2: Important
    • Resolution: Unresolved
    • Affects Version/s: 6.2.0 RC
    • Fix Version/s: None
    • Labels:
      None
    • Environment:
      Linux X11 Manjaro on Intel HD
      Linux eglfs Debian Buster on Raspberry Pi 3B

      Description

      Hello, I'm starting to evaluate Qt6 for my projects. I ran a couple of tests to compare Qt5 to Qt6 and noticed something weird in my first test.

      My benchmark is a simple Qt Quick application with a few animations and a framerate value shown in the interface.

      What I see is that my calculation of the framerate reports a higher value of Qt5 vs Qt6 for the two platforms I tested: x64 Intel HD Linux on X11 and armv8-a Raspberry Pi 3B Linux on eglfs KMS.

      Intel HD: ~40 vs ~31

      VC4 Raspberry Pi: ~60 vs ~41

      Are these values to be trusted? What do you consider to be the cause?

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            People

            Assignee:
            lagocs Laszlo Agocs
            Reporter:
            luc4 Luca Carlon
            Votes:
            1 Vote for this issue
            Watchers:
            4 Start watching this issue

              Dates

              Created:
              Updated:

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