Messages in this thread |  | | Date | Thu, 07 Sep 2000 00:23:07 +1100 | From | Andrew Morton <> | Subject | Re: [patch]2.4.0-test6 "spinlock" preemption patch |
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George Anzinger wrote: > > This patch, for 2.4.0-test6, allows the kernel to be built with full > preemption.
Neat. Congratulations.
> ... > The measured context switch latencies with this patch > have been as high as 12 ms, however, we are actively working to > isolate and fix the areas of the system where this occurs.
That has already been done! From memory, there are three long-lived spinlocks which affect latency. Try applying http://www.uow.edu.au/~andrewm/linux/low-latency.patch
Also, review Ingo's ll-patch. He may have picked up on some extra ones.
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