From: Uwe Woessner (woessner++at++hlrs.de)
Date: 05/18/2000 23:26:30
Hi Luc,
Are you running multiple X servers in the 6 pipe case?
Performer seems to serialize drawing if two pipes are served by
different X servers (e.g. :1.0 :2.0 ...) we had to switch to one X
Server
serving all pipes (:0.1 :0.2 ...), then the drawing is done in parallel.
If this is your problem, try looking at a huge object that can't be
culled
away and you will notice a drop to half the framerate when using two
X servers on two pipes compared to one X server.
I reported this problem a while ago, but did not get an answer...
Regards,
Uwe
> We have a Vega application running on an Onyx2 IR2, 2 pipes, 8xR10K,
> Irix 6.5.3f. Each pipe is driving 2 channels at 1280x1024. The
> performance on that system are correct (30 hz and the CPUs are not too
> busy) eve when targets are moving.
>
> When we are running the same application (using just a different adf
> file for the pipes/channels configuration) on an Onyx2 IR2, 6 pipes,
> 16xR10K, Irix 6.5.5m (each pipe still driving 2 channels at 1280x1024),
> the performance are poor. The frame rate drops rapidly under 30 Hz (when
> targets start moving) but none of the processors are running at 100%.
>...
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