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Date: Fri, 4 May 2012 08:33:43 +0900
Message-ID: <CABEgKgoPf69-Ps5Gc6Rv-TVVBxvTdjOJCdnbh6DzTa4A2m2y9A@mail.gmail.com>
Subject: Re: inux-next: Tree for Apr 27 (uml + mm/memcontrol.c)
From: Hiroyuki Kamezawa <kamezawa.hiroyuki@gmail.com>
To: David Rientjes <rientjes@google.com>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        Randy Dunlap <rdunlap@xenotime.net>,
        Stephen Rothwell <sfr@canb.auug.org.au>, linux-next@vger.kernel.org,
        linux-kernel@vger.kernel.org, Richard Weinberger <richard@nod.at>,
        KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
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On Fri, May 4, 2012 at 8:21 AM, Hiroyuki Kamezawa
<kamezawa.hiroyuki@gmail.com> wrote:
> On Fri, May 4, 2012 at 6:57 AM, David Rientjes <rientjes@google.com> wrote:
>> On Thu, 3 May 2012, David Rientjes wrote:
>> If I add XX:+UseLargePages to the command line to use
>> hugepages it's even larger.

Ah, sorry. I couldn't understand this. Why performance difference gets larger if
usage of anon memory decreases ? I guess overheads are just added to anon page
faults and file cache handling. If you use Hugepage, anon memory overheads will
disappear.

Thanks,
-Kame
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