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From: Rik van Riel <riel@redhat.com>
To: linux-kernel@vger.kernel.org
Cc: lee.schermerhorn@hp.com, akpm@linux-foundation.org,
	kosaki.motohiro@jp.fujitsu.com
Subject: Re: [PATCH -mm 00/15] VM pageout scalability improvements (V6)
Date: Mon, 28 Apr 2008 15:55:00 -0400	[thread overview]
Message-ID: <20080428155500.0ab3f4a7@cuia.boston.redhat.com> (raw)
In-Reply-To: <20080428181835.502876582@redhat.com>

On Mon, 28 Apr 2008 14:18:35 -0400
Rik van Riel <riel@redhat.com> wrote:

> This patch series improves VM scalability 

Here is some (absolutely minimal) performance data.

Running "fillmem 16000" on my 16 GB test system puts the system about 800MB
into swap.  Both run time and CPU use are improved with this patch series.
The numbers are an average of about a dozen runs.

2.6.25-mm1:
real	1m31
user	0m11
sys	0m32

2.5.25-mm1-splitvm:
real	1m02
user	0m11
sys	0m22

This does not account for kswapd CPU use, which accumulated to about 56
seconds total in the splitvm kernel, but around 5 minutes on 2.6.25-mm1.

I will make a kernel RPM with the split LRU patch set available so other
people can easily do performance tests.

-- 
All Rights Reversed

  parent reply	other threads:[~2008-04-28 19:56 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-04-28 18:18 Rik van Riel
2008-04-28 18:18 ` [PATCH -mm 01/15] FYI: vmstats are "off-by-one" Rik van Riel
2008-04-28 18:18 ` [PATCH -mm 02/15] move isolate_lru_page() to vmscan.c Rik van Riel
2008-04-28 18:18 ` [PATCH -mm 03/15] Use an indexed array for LRU variables Rik van Riel
2008-04-28 18:18 ` [PATCH -mm 04/15] use an array for the LRU pagevecs Rik van Riel
2008-04-28 18:18 ` [PATCH -mm 05/15] free swap space on swap-in/activation Rik van Riel
2008-05-12 11:21   ` Daisuke Nishimura
2008-05-12 13:33     ` Rik van Riel
2008-05-13 13:00       ` Daisuke Nishimura
2008-05-13 13:11         ` Rik van Riel
2008-05-13 16:04         ` [PATCH] take pageout refcount into account for remove_exclusive_swap_page Rik van Riel
2008-05-13 17:43           ` Lee Schermerhorn
2008-05-13 18:09             ` Rik van Riel
2008-05-13 19:02               ` Lee Schermerhorn
2008-05-15  2:15                 ` Daisuke Nishimura
2008-05-15 17:55                   ` Lee Schermerhorn
     [not found]     ` <1210600296.7300.23.camel@lts-notebook>
2008-05-13 12:39       ` [PATCH -mm 05/15] free swap space on swap-in/activation Daisuke Nishimura
2008-04-28 18:18 ` [PATCH -mm 06/15] define page_file_cache() function Rik van Riel
2008-04-28 18:18 ` [PATCH -mm 07/15] split LRU lists into anon & file sets Rik van Riel
2008-05-10  7:50   ` MinChan Kim
2008-04-28 18:18 ` [PATCH -mm 08/15] SEQ replacement for anonymous pages Rik van Riel
2008-04-28 18:18 ` [PATCH -mm 09/15] add some sanity checks to get_scan_ratio Rik van Riel
2008-05-15  6:34   ` MinChan Kim
2008-05-15 13:12     ` Rik van Riel
2008-05-16  6:42       ` MinChan Kim
2008-05-16 16:47         ` Rik van Riel
2008-04-28 18:18 ` [PATCH -mm 10/15] add newly swapped in pages to the inactive list Rik van Riel
2008-04-28 18:18 ` [PATCH -mm 11/15] more aggressively use lumpy reclaim Rik van Riel
2008-04-28 18:18 ` [PATCH -mm 12/15] No Reclaim LRU Infrastructure Rik van Riel
2008-04-28 18:18 ` [PATCH -mm 13/15] Non-reclaimable page statistics Rik van Riel
2008-04-28 18:18 ` [PATCH -mm 14/15] ramfs pages are non-reclaimable Rik van Riel
2008-04-28 18:18 ` [PATCH -mm 15/15] SHM_LOCKED pages are nonreclaimable Rik van Riel
2008-04-28 19:55 ` Rik van Riel [this message]
2008-05-08  4:54 ` [PATCH -mm 00/15] VM pageout scalability improvements (V6) Rik van Riel

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