Re: [patch] voluntary-preempt-2.6.8.1-P7

Lee Revell
2004-08-21T21:56:32Z

On Sat, 2004-08-21 at 10:05, Ingo Molnar wrote:
> i've uploaded the -P7 patch:
>
> http://redhat.com/~mingo/voluntary-preempt/voluntary-preempt-2.6.8.1-P7
>
> Changes since -P6:
>
> - fixed the XFree86/X.org context-switch latency. (let me know if you
> see any weirdness like X not starting up while it did before.)
>
> - halved the pagevec size, to reduce the radix gang-lookup costs.
>

Great, this is a significant improvement. Most of the worst case
latencies (~150 usec) seem related to the TCP stack now, and a minor one
(51 usec) in the ext3 journaling:

http://krustophenia.net/testresults.php?dataset=2.6.8.1-P7

Lee