Messages in this thread | | | Date | Thu, 2 Sep 2004 15:20:46 -0700 | From | Andrew Morton <> | Subject | Re: [linux-audio-dev] Re: [announce] [patch] Voluntary Kernel Preemption Patch |
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Andrea Arcangeli <andrea@suse.de> wrote: > > if you're scared that there are too many cond_resched (I'm not scared > and people should enable them anyways if they make a difference, they > still should be less than the number of spin_unlocks with preempt > enabled), then you should add a cond_resched_costly and add a config > option that turns it off.
None of these approaches improves worst-case latency at all on SMP. If we're not going to address the SMP problem we could just make it UP-only, in which case increased locking costs are a non-issue.
I'd prefer that we find a solution for SMP too though. - 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/
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