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Date: Thu, 08 Apr 2010 12:39:11 +0300
From: Avi Kivity <avi@redhat.com>
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To: Andrea Arcangeli <aarcange@redhat.com>
Cc: linux-mm@kvack.org, Andrew Morton <akpm@linux-foundation.org>, Marcelo Tosatti <mtosatti@redhat.com>, Adam Litke <agl@us.ibm.com>, Izik Eidus <ieidus@redhat.com>, Hugh Dickins <hugh.dickins@tiscali.co.uk>, Nick Piggin <npiggin@suse.de>, Rik van Riel <riel@redhat.com>, Mel Gorman <mel@csn.ul.ie>, Dave Hansen <dave@linux.vnet.ibm.com>, Benjamin Herrenschmidt <benh@kernel.crashing.org>, Ingo Molnar <mingo@elte.hu>, Mike Travis <travis@sgi.com>, KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>, Christoph Lameter <cl@linux-foundation.org>, Chris Wright <chrisw@sous-sol.org>, bpicco@redhat.com, KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>, Balbir Singh <balbir@linux.vnet.ibm.com>, Arnd Bergmann <arnd@arndb.de>, "Michael S. Tsirkin" <mst@redhat.com>, Peter Zijlstra <peterz@infradead.org>, Johannes Weiner <hannes@cmpxchg.org>, Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>, Chris Mason <chris.mason@oracle.com>, Linus Torvalds <torvalds@linux-foundation.org>
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On 04/08/2010 04:50 AM, Andrea Arcangeli wrote:
> Hello,
>
> I merged memory compaction v7 from Mel, plus his latest incremental updates
> into my tree.
>
>    

A quick benchmark, running 'sort -b 1200M /tmp/largerand > /dev/null'.  
The file is 1GB in size, consisting of 15-char base64 encoded random 
string + newline records.

4k:

   real    2m28.155s
   user    2m21.560s
   sys    0m6.457s

2M:

   real    2m19.626s
   user    2m13.771s
   sys    0m5.812s

A 6% improvement.

I'll try running this with a kernel build in parallel.

-- 
error compiling committee.c: too many arguments to function

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