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Date: Tue, 12 Oct 2010 10:02:07 +0900 From: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com> To: Andrew Morton <akpm@...ux-foundation.org> Cc: Jack Steiner <steiner@....com>, yinghai@...nel.org, mingo@...e.hu, linux-kernel@...r.kernel.org Subject: Re: Problem: scaling of /proc/stat on large systems On Mon, 11 Oct 2010 17:22:26 -0700 Andrew Morton <akpm@...ux-foundation.org> wrote: > On Tue, 12 Oct 2010 09:09:07 +0900 KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com> wrote: > > > > > > > > > How about this ? This is an add-on patch. > > > > > > Nice!! > > > > > > The combination of the 2 patches solves the problem. > > > The timings are (4096p, 256 nodes, 4592 irqs): > > > > > > # time cat /proc/stat > /dev/null > > > > > > Baseline: 12.627 sec > > > Patch1 : 2.459 sec > > > Patch 1 + Patch 2: .561 sec > > > > > > > > > Acked-by: Jack Steiner <steiner@....com> > > > > > > > Thank you for testing. I'll post again if necessary. > > Yes please. This has been going on for two weeks so memories need > refreshing. Also we have no patch title and no changelog which > includes the testing results. > > I could stitch all that together of course, but it's best that it all > be done afresh, I think. > ok, will do today. -Kame -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.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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