Uploaded image for project: 'Qt'
  1. Qt
  2. QTBUG-64999

Poor window resize performance

XMLWordPrintable

    • Icon: Bug Bug
    • Resolution: Duplicate
    • Icon: P2: Important P2: Important
    • None
    • 5.9.3
    • GUI: Painting, GUI: Window management, QPA: X11/XCB
    • None
    • Gentoo Linux x86_64, 4.12.12

      KDE 5.11.4

      nvidia-drivers 387.34

      Window resizing is extremely slow and consumes a lot of CPU. Half by Qt application itself, half by X11.

      It's not a Qt regression since this bug exists for a long time (starting Qt 5). Qt 4 worked fine, but I don't have one at the moment to test again.

      The resize lags only in Qt applications, not GTK+, so it's not KDE, X, nvidia bug. Event through that X11 consumes a lot of CPU too and according to profiling it's because of nvidia. GTK+ windows in GNOME works perfectly smooth.

       

      More details: https://bugs.freedesktop.org/show_bug.cgi?id=103362

        No reviews matched the request. Check your Options in the drop-down menu of this sections header.

            Unassigned Unassigned
            razrfalcon Evgeniy
            Votes:
            0 Vote for this issue
            Watchers:
            4 Start watching this issue

              Created:
              Updated:
              Resolved:

                There are no open Gerrit changes