On Mon, Mar 05, 2007 at 05:58:31AM +0100, Nick Piggin wrote: > On Sun, Mar 04, 2007 at 08:13:09PM -0800, Suresh B wrote: > > On a 16 node system, we have seen ~1.25% perf improvement on a database > > workload > > when we completely short circuited wake_idle(). This patch is trying to > > comeup > > with a best compromise to avoid the cache misses and also minimize the > > latenices, > > perf impact. > > Hmm, I wonder what if we only wake_idle if the wakeup comes from this > CPU or a sibling? That's probably going to have downsides in some > workloads as well, though.
yep. I thought about it and thought this patch is a decent solution. thanks, suresh - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
