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  1. Qt
  2. QTBUG-59922

WebEngine rendering lots of text is very slow

    XMLWordPrintable

Details

    • Bug
    • Resolution: Done
    • P1: Critical
    • 5.9.0 RC
    • 5.8.0, 5.9.0 Alpha
    • WebEngine
    • None
    • Linux Mint 18.1
    • 7f28424f864523f2b3ea2152d4686683bb03bd88

    Description

      When I open the attached file (which just contains 65536 lines with 64 "a"s each) in Demo Browser, Minimal Browser, Simple Browser, ... and scroll down, the rendering becomes very slow. It manages to render about 240 lines, then it takes seconds to catch up, so I can scroll down another 100 lines etc.

      It works much better in chromium-browser, chrome and firefox. I have tried passing my chrome://flags settings via commandline switches to webengine.

      This happens on http://, file:// and custom url schemes.

      Attachments

        Issue Links

          is duplicated by

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-60989 Textarea freeze if more than ~1000k words added

          • Not Evaluated - Not yet evaluated/prioritized
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-41417 Enabling accessibility on large pages is very slow

          • P3: Somewhat important - Should be fixed, but doesn't affect the release in any way.
          • Closed
          relates to

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-54650 Investigate if accessibility works properly

          • P3: Somewhat important - Should be fixed, but doesn't affect the release in any way.
          • Closed
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              alexandru.croitor Alexandru Croitor
              viengelm Viktor Engelmann
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              Dates

                Created:
                Updated:
                Resolved:

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