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SubjectRe: [PATCH 2/2] mutex: Apply adaptive spinning on mutex_trylock()
Hello,

On Thu, Mar 24, 2011 at 10:41:51AM +0100, Tejun Heo wrote:
> USER SYSTEM SIRQ CXTSW THROUGHPUT
> SIMPLE 61107 354977 217 8099529 845.100 MB/sec
> SPIN 63140 364888 214 6840527 879.077 MB/sec
>
> On various runs, the adaptive spinning trylock consistently posts
> higher throughput. The amount of difference varies but it outperforms
> consistently.

I've been running more of these tests and am having doubts about the
consistency. It seems that, even on a fresh filesystem, some random
initial condition seems to have persistent effect on the whole run.
I'll run more tests and report back.

Thanks.

--
tejun


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