[Bug 23085] Radeon KMS: XGetImage very slow, as is Firefox scrolling

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Sun Aug 2 07:20:28 PDT 2009


--- Comment #1 from Michel Dänzer <michel at daenzer.net>  2009-08-02 07:20:28 PST ---
If Firefox (or any other app, for that matter) uses XGetImage for scrolling,
it's broken and needs to be fixed.

The problem could indeed be due to software fallbacks though. It could really
be interesting to see profiles obtained with sysprof or oprofile. Please stick
to a single operation as much as possible during any profile run.

You could also try enabling the fallback debugging code in xserver/exa or the
driver and see if antything sticks out. But note that some of those debugging
messages can be red herrings without backing analysis, don't jump to

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