Manfred Spraul [manfred@colorfullife.com] wrote:
>
> > lock contention work would be appreciated. I'm aware of timer scalability
> > work ongoing at people.redhat.com/mingo/scalable-timers, but is anyone
> > working on reducing sem_ids contention?
>
> Is that really a problem?
> The contention is high, but the actual lost time is quite small.
I agree it isn't a major performance problem under that workload. But, I
thought since the contention was high that other workloads which may
utilize it more might have shown it to be a significant problem.
> I've attached 2 changes that might reduce the contention, but it's just
> an idea, completely untested.
Thanks for the insight into the sempahore subsystem and the suggested fixes.
-- Jonathan Lahr IBM Linux Technology Center Beaverton, Oregon lahr@us.ibm.com 503-578-3385- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Wed Mar 07 2001 - 21:00:17 EST