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  1. Qt
  2. QTBUG-55842

XCB: X11 forwarding much slower compared to Qt 4

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      Attached is slightly modified qtperf4, just press the Run button.

      On my setup Qt 5 is almost twice slower with normal settings (107.84s vs 59.15s). Qt 4 also does a lot better when using "native" render system, which approaches near local speed in this test in my environment (1.5s Qt5 local vs 1.7s Qt 4 remote+native).

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        1. qtbug55842.tar.gz
          25 kB
          Joni Poikelin

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          relates to

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-50338 Qt5 remote update of X11 screen incredibly slow

          • Not Evaluated - Not yet evaluated/prioritized
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-56851 X11 streamed UI consumes huge network bandwidth

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed
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              paeglis Gatis Paeglis
              poikelin Joni Poikelin
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