Sound performance problems in FreeBSD

Daniel O'Connor doconnor at
Sun Sep 26 05:42:38 PDT 2004

On Sun, 26 Sep 2004 21:16, Ryan Freeman wrote:
> > I suspect that sysctl involves doing lots of locking and will do weird
> > things..
> > Does it happen if you run a CPU using userland proc inseadt?
> The problem is, it isn't just that sysctl command that does it. I find that
> even running gkrellm makes the ticking worse. if i close gkrellm, it

I'd say gkrellm probably pokes at various sysctl's to gather stats so it may 
be a related problem.

> reduces the ticks/sound stretches. that sysctl was just an easy way to make
> the problem _really_ stand out it seems. iirc when i was using 5.2.1 i
> found that just disabling the proc chart in gkrellm seemed to help a lot.
> haven't bothered to try it now.

Does a purely CPU bound process cause the problem?
ie try something like..
dd if=/dev/zero | md5

Daniel O'Connor software and network engineer
for Genesis Software -
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