Re: [patch] voluntary-preempt-2.6.8.1-P5

Ingo Molnar
2004-08-20T17:04:28Z

* K.R. Foley <kr@cybsft.com> wrote:

> Ingo Molnar wrote:
> > i've uploaded the -P5 patch:
> >
> > http://redhat.com/~mingo/voluntary-preempt/voluntary-preempt-2.6.8.1-P5
> >
> <snip>
>
> I have been running the voluntary-preempt patches on one of my slower
> (450) servers at home. The question is would latency traces from such
> a slow system be useful to you in this testing. About the most load
> that gets generated on this system, usually, is compiling the kernel
> or a very large app. that I do development on. What I tend to do to
> load the system is just run the stress-kernel suite and sometimes
> Andrew's amlat program to provide RT scheduling pressure.
>
> If this would be useful, let me know as I have an interest in seeing
> latencies reduced as much as possible. I am building with the -P5
> patch right now. If it would be more useful to try this on a faster
> system or to stess the system in a different manner, I could do that
> as well.

sure, all traces are interesting! On your system the latencies will be a
bit larger than on others, but that's all - the maximum latency points
should be the same (or similar) critical sections. So it's just as
useful as the other traces.

Ingo