Messages in this thread |  | | | Date | Tue, 5 Jan 2010 09:28:36 +0900 | | From | KAMEZAWA Hiroyuki <> | | Subject | Re: [RFC][PATCH 0/8] Speculative pagefault -v3 |
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On Mon, 4 Jan 2010 15:59:45 -0600 (CST) Christoph Lameter <cl@linux-foundation.org> wrote:
> On Mon, 4 Jan 2010, Rik van Riel wrote: > > > Fun, but why do we need this? > > > > What improvements did you measure? > > If it measures up to Kame-sans approach then the possible pagefault rate > will at least double ... > On 4-core/2 socket machine ;)
More than page fault rate, important fact is that we can reduce cache contention by skipping mmap_sem in some situation.
And I think we have some chances.
Thanks, -Kame
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