On Thu, Jul 01, 1999 at 02:24:21AM -0400, nunca wrote:
> I've been playing with writing real-time guitar effects boxes, and I've
> gotten the latency down to 11ms with stock linux. Would changing the HZ
> constant to 1024 help me reduce the latency (ie, does it cause a task to
> get scheduled more often)? Any other/better suggestions for decreasing
> latency? Thanks in advance.
> -Nolan
I don't know what you are dpoing excatly, so I can't answer your question.
Latencies can not only be introduced by scheduling latency, but also by
interrupts holding spinlocks and similar.
I'd suggest you try my HZ=3D400 patch from http://www.garloff.de/kurt/linux/
(It not only sets the HZ value to 400, but also fixes the times reported to
userspace.) and test it out.
Regards,
--=20
Kurt Garloff <garloff@suse.de> SuSE GmbH, N=FCrnberg, FRG
Linux kernel development; SCSI driver: DC390 (tmscsim/AM53C974)
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