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SubjectRe: PREEMPT_RCU on UP
On Tue, Oct 27, 2009 at 09:10:02AM -0700, Patrik Kluba wrote:
>
> Hi!
>
> Does the preemptible RCU implementation have better performance (lower
> latency?) than the classic RCU implementation on embedded uniprocessor
> systems? I can't find any information about this in Documentation/.

I would expect that you would get the best latencies on UP by using
the -rt patchset and preemptible RCU. I don't know that anyone has
carefully measured the combination of vanilla CONFIG_PREEMPT kernel
and preemptible RCU on UP.

Thanx, Paul


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