Tuning the scheduler? Desktop with a CPU-intensive task becomes rapidly unusable.

Andriy Gapon avg at icyb.net.ua
Tue Sep 7 07:34:20 UTC 2010

on 06/09/2010 22:05 jhell said the following:
> On 09/03/2010 20:14, David Xu wrote:
>> I think sysctl kern.sched.preempt_thresh is too low, default is only
>> 64. I always tune it up to 200 on  my desktop machine which is
>> running gnome and other GUI applications, for a heavy GUI deskkop, I
>> would tune it up to 224 to get better result.
> For reference how did you arrive at 224 for a result ?

As Jeremy has already discovered, take a look at sys/sys/priority.h, especially

Andriy Gapon

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