[Xorg] Solicitation of screen shots of new facilities in action...

Thomas Winischhofer thomas at winischhofer.net
Sun Aug 15 11:29:18 PDT 2004

Keith Packard wrote:
> Around 18 o'clock on Aug 15, "Ronny V. Vindenes" wrote:
>>With cvs today (the 15th), everything I've tested is drawing correctly.
>>Performance with xcompmgr running is pretty good, BUT without xcompmgr
>>running it's really poor - scrolling in gnome-terminal is so slow it's
>>completely unusable and moving windows around is all "skip-n-jump".
> I cannot reproduce this kind of performance problem.  I'm going to need 
> some help to fix it.  What video card?  CPU?  I did find a minor 
> performance issue with window manipulation using x11perf:
> 	$ x11perf -move

2Ghz Celeron, SiS M650 (shared memory):

> With composite extension enabled, no xcompmgr:
>   80000 reps @   0.1137 msec (  8790.0/sec): Move window (4 kids)

80000 reps @ 0.1104 msec (9060.0/sec): Move window (4 kids)

> With composite extension disabled:
>  240000 reps @   0.0210 msec ( 47700.0/sec): Move window (4 kids)

120000 reps @ 0.0497 msec (20100.0/sec): Move window (4 kids)

Seems that with composite enabled, the CPU copies the data instead of 
the engine.


Thomas Winischhofer
thomas AT winischhofer DOT net          http://www.winischhofer.net/
twini AT xfree86 DOT org

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