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1. Process Scheduling Question

Hi,

I'm sorta a newbie to Linux, and I couldn't really think of anywhere else
to post this question.  Hope someone can answer or perhaps point me in the
right direction to find answers.

I'm running RedHat 7.2 with Gnome.  I'm trying to benchmark the
performance of an mpeg video player (i.e. max frames/sec, jitter, etc.)
under varying system loads.  However, no matter how much workload I put on
the system, the video player is able to play at a pretty consistent rate
of around 90 frames/sec.  I've tried running a variety of
applications/workloads both in the foreground and background.

The mpeg video player code doesn't seem to have anything in it that raises
its priority.  Is it possible in Linux, the system automatically raises
the priority of any process if it is displaying data to the screen through
the X-Windows Library??  I noticed that often the mpeg-player would slowly
get up to 90 frames/sec, as if the priority of the process were slowly
rising.

If this is the case, is there a way I could set the priority of the mpeg
process so that the priority stays constant with other "normal"
computational processes???

Thanks,
Al

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