From: KOSAKI Motohiro <kosaki.motohiro@gmail.com>
To: Christoph Lameter <cl@linux.com>
Cc: Richard Davies <richard@arachsys.com>,
Satoru Moriya <satoru.moriya@hds.com>,
KOSAKI Motohiro <kosaki.motohiro@gmail.com>,
Jerome Marchand <jmarchan@redhat.com>,
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
"jweiner@redhat.com" <jweiner@redhat.com>,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"riel@redhat.com" <riel@redhat.com>,
"lwoodman@redhat.com" <lwoodman@redhat.com>,
"shaohua.li@intel.com" <shaohua.li@intel.com>,
"dle-develop@lists.sourceforge.net"
<dle-develop@lists.sourceforge.net>,
Seiji Aguchi <seiji.aguchi@hds.com>,
Minchan Kim <minchan.kim@gmail.com>
Subject: Re: [RFC][PATCH] avoid swapping out with swappiness==0
Date: Thu, 26 Apr 2012 11:37:10 -0400 [thread overview]
Message-ID: <4F996BA6.9010900@gmail.com> (raw)
In-Reply-To: <alpine.DEB.2.00.1204260948520.16059@router.home>
(4/26/12 10:50 AM), Christoph Lameter wrote:
> On Tue, 24 Apr 2012, Richard Davies wrote:
>
>> I strongly believe that Linux should have a way to turn off swapping unless
>> absolutely necessary. This means that users like us can run with swap
>> present for emergency use, rather than having to disable it because of the
>> side effects.
>
> Agree. And this ooperation mode should be the default behavior given that
> swapping is a very slow and tedious process these days.
Even though current patch is not optimal, I don't disagree this opinion. Can
you please explain your use case? Why don't you use swapoff?
Off topic: I hope linux is going to aim good swap clustered io in future. Especially
when using THP, 4k size io is not really good.
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next prev parent reply other threads:[~2012-04-26 15:36 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-02 17:36 [RFC][PATCH] avoid swapping out with swappiness==0 Satoru Moriya
2012-03-02 22:47 ` Rik van Riel
2012-03-02 23:43 ` Satoru Moriya
2012-03-03 2:29 ` Hillf Danton
2012-03-04 6:57 ` Minchan Kim
2012-03-05 21:38 ` Satoru Moriya
2012-03-05 13:49 ` Rik van Riel
2012-03-05 21:56 ` Johannes Weiner
2012-03-07 17:19 ` KOSAKI Motohiro
2012-03-07 18:18 ` Satoru Moriya
2012-03-30 22:44 ` Satoru Moriya
2012-04-02 17:10 ` KOSAKI Motohiro
2012-04-03 11:25 ` Jerome Marchand
2012-04-03 15:15 ` Satoru Moriya
2012-04-04 17:38 ` KOSAKI Motohiro
2012-04-21 0:21 ` Satoru Moriya
2012-05-11 21:11 ` Satoru Moriya
2012-05-12 22:21 ` Rik van Riel
2012-04-24 8:20 ` Richard Davies
2012-04-24 22:14 ` Satoru Moriya
2012-04-26 14:26 ` Richard Davies
2012-04-26 15:41 ` KOSAKI Motohiro
2012-05-07 20:09 ` Rik van Riel
2012-05-08 0:05 ` Minchan Kim
2012-05-21 7:12 ` Richard Davies
2012-05-21 13:39 ` Satoru Moriya
2012-04-26 14:50 ` Christoph Lameter
2012-04-26 15:37 ` KOSAKI Motohiro [this message]
2012-04-26 16:08 ` Richard Davies
2012-04-26 18:20 ` Christoph Lameter
2012-04-27 13:55 ` Rik van Riel
2012-05-07 20:11 ` Rik van Riel
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