Return-Path: <linux-kernel-owner+w=401wt.eu-S1764009AbYFFDBR@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
	id S1764009AbYFFDBR (ORCPT <rfc822;w@1wt.eu>);
	Thu, 5 Jun 2008 23:01:17 -0400
Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753571AbYFFDBD
	(ORCPT <rfc822;linux-kernel-outgoing>);
	Thu, 5 Jun 2008 23:01:03 -0400
Received: from fgwmail6.fujitsu.co.jp ([192.51.44.36]:43604 "EHLO
	fgwmail6.fujitsu.co.jp" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
	with ESMTP id S1753822AbYFFDBB (ORCPT
	<rfc822;linux-kernel@vger.kernel.org>);
	Thu, 5 Jun 2008 23:01:01 -0400
Date: Fri, 6 Jun 2008 12:01:46 +0900
From: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
To: Keika Kobayashi <kobayashi.kk@ncos.nec.co.jp>
Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org,
       akpm@linux-foundation.org, nagar@watson.ibm.com, balbir@in.ibm.com,
       sekharan@us.ibm.com, kosaki.motohiro@jp.fujitsu.com
Subject: Re: [PATCH 0/3 v2] per-task-delay-accounting: add memory reclaim
 delay
Message-Id: <20080606120146.3d9867db.kamezawa.hiroyu@jp.fujitsu.com>
In-Reply-To: <20080605162759.a6adf291.kobayashi.kk@ncos.nec.co.jp>
References: <20080605162759.a6adf291.kobayashi.kk@ncos.nec.co.jp>
Organization: Fujitsu
X-Mailer: Sylpheed 2.4.2 (GTK+ 2.10.11; i686-pc-mingw32)
Mime-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org
Content-Length: 2593
Lines: 82

On Thu, 5 Jun 2008 16:27:59 -0700
Keika Kobayashi <kobayashi.kk@ncos.nec.co.jp> wrote:

> Hi.
> 
> This is v2 of accounting memory reclaim patch series.
> Thanks to Kosaki-san, Kamezawa-san, Andrew for comments and advice!
> These patches were fixed about the following.
> 
> Against: next-20080605
> 
> 1) Change Log
> 
>  o Add accounting memory reclaim delay from memcgroup.
>    For accounting both global and cgroup memory reclaim,
>    accounting point was moved from try_to_free_pages() to do_try_to_free_pages.
> 
>  o Drop the patch regarding /proc export for memory reclaim delay.
>    Because it seems that two separate ways to report are not necessary,
>    this patch series supports only NETLINK and doesn't add a field to /proc/<pid>/stat.
> 
> 

Thanks, I like this set.

Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>




> 2) Confirm the fix regarding memcgroup.
> 
>   o Previous patch can't catch memory reclaim delay from memcgroup.
> 
>     $ echo 10M > /cgroups/0/memory.limit_in_bytes
> 
>     $ ls -s test.dat
>     500496 test.dat
> 
>     $ time tar cvf test.tar test.dat
>     real    0m21.957s
>     user    0m0.032s
>     sys     0m2.348s
> 
>     $ ./delayget -d -p <pid>
>     CPU             count     real total  virtual total    delay total
>                      2441     2288143000     2438256954       22371958
>     IO              count    delay total
>                      2444    18745251314
>     SWAP            count    delay total
>                         0              0
>     RECLAIM         count    delay total
>                         0              0
> 
>   o Current patch can catch memory reclaim delay from memcgroup.
> 
>     $ echo 10M > /cgroups/0/memory.limit_in_bytes
> 
>     $ ls -s test.dat
>     500496 test.dat
> 
>     $ time tar cvf test.tar test.dat
>     real    0m22.563s
>     user    0m0.028s
>     sys     0m2.440s
> 
>     $ ./delayget -d -p <pid>
>     CPU             count     real total  virtual total    delay total
>                      2640     2456153500     2478353004       28366219
>     IO              count    delay total
>                      2628    19894214188
>     SWAP            count    delay total
>                         0              0
>     RECLAIM         count    delay total
>                      6600    10682486085
> 

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/