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Slow performance and large memory usage with QTableView in Qt 5.15

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qtableviewperformance
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  • J.HilkJ J.Hilk

    @KaoN have you done a full hard shutdown or only the soft one that comes when opening the start menu ?

    hit win + r
    
    then type:
    shutdown /s /f /t 0
    
    K Offline
    K Offline
    KaoN
    wrote on last edited by
    #21

    @J-Hilk It did help to get everything work well again...but could you plz explain a bit, is it a system bug?

    J.HilkJ 1 Reply Last reply
    0
    • K KaoN

      @J-Hilk It did help to get everything work well again...but could you plz explain a bit, is it a system bug?

      J.HilkJ Offline
      J.HilkJ Offline
      J.Hilk
      Moderators
      wrote on last edited by J.Hilk
      #22

      @KaoN Microsoft made this change a while ago when the UWP, Windows for mobile/tablet was a thing and windows required faster reboots/boots/wakeups

      As a result all modern Windows system have a "soft reboot /shutdown" these days

      Usually you don't notice this, until some day, fundamental stuff starts behaving strangely.

      I for once managed it (with Qt no less) to get my bluetooth driver in an undefined state, so nothing, bluetooth worked anymore, and a reboot did not fix it, because the normal reboot does not reinitialize and clear everything. That's how I learned about it.

      Your case, smells like a bug hard to tell if Qt is at fault or not.
      Have you tried updating your windows ? My Bluetooth story fixed itself with a windows update.

      And have you tried it on a 2nd, different windows pc ?

      If yes, and behavior is the same (in both cases) than it may be a Qt issue


      Be aware of the Qt Code of Conduct, when posting : https://forum.qt.io/topic/113070/qt-code-of-conduct


      Q: What's that?
      A: It's blue light.
      Q: What does it do?
      A: It turns blue.

      K 1 Reply Last reply
      3
      • J.HilkJ J.Hilk

        @KaoN Microsoft made this change a while ago when the UWP, Windows for mobile/tablet was a thing and windows required faster reboots/boots/wakeups

        As a result all modern Windows system have a "soft reboot /shutdown" these days

        Usually you don't notice this, until some day, fundamental stuff starts behaving strangely.

        I for once managed it (with Qt no less) to get my bluetooth driver in an undefined state, so nothing, bluetooth worked anymore, and a reboot did not fix it, because the normal reboot does not reinitialize and clear everything. That's how I learned about it.

        Your case, smells like a bug hard to tell if Qt is at fault or not.
        Have you tried updating your windows ? My Bluetooth story fixed itself with a windows update.

        And have you tried it on a 2nd, different windows pc ?

        If yes, and behavior is the same (in both cases) than it may be a Qt issue

        K Offline
        K Offline
        KaoN
        wrote on last edited by KaoN
        #23

        @J-Hilk Thanks for the information. Generally I find one case that if the application run through windows remote desktop, it will slow, even it was good before, and it will not recovery until hard reboot.
        But another my laptop perform badly what ever I reboot or hard shutdown.
        Only 5.9 works perfectly on every situation.

        J.HilkJ 1 Reply Last reply
        0
        • K KaoN

          @J-Hilk Thanks for the information. Generally I find one case that if the application run through windows remote desktop, it will slow, even it was good before, and it will not recovery until hard reboot.
          But another my laptop perform badly what ever I reboot or hard shutdown.
          Only 5.9 works perfectly on every situation.

          J.HilkJ Offline
          J.HilkJ Offline
          J.Hilk
          Moderators
          wrote on last edited by
          #24

          @KaoN
          mmh the last Idea I have, would be updating your graphics drivers, those are most often an issue. After that, bring it to https://bugreports.qt.io


          Be aware of the Qt Code of Conduct, when posting : https://forum.qt.io/topic/113070/qt-code-of-conduct


          Q: What's that?
          A: It's blue light.
          Q: What does it do?
          A: It turns blue.

          1 Reply Last reply
          0

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