From: Dave Young <hidave.darkstar@gmail.com>
To: Wu Fengguang <fengguang.wu@intel.com>
Cc: linux-mm <linux-mm@kvack.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: readahead and oom
Date: Tue, 26 Apr 2011 14:05:12 +0800 [thread overview]
Message-ID: <BANLkTik8k9A8N8CPk+eXo9c_syxJFRyFCA@mail.gmail.com> (raw)
In-Reply-To: <20110426055521.GA18473@localhost>
On Tue, Apr 26, 2011 at 1:55 PM, Wu Fengguang <fengguang.wu@intel.com> wrote:
> On Tue, Apr 26, 2011 at 01:49:25PM +0800, Dave Young wrote:
>> Hi,
>>
>> When memory pressure is high, readahead could cause oom killing.
>> IMHO we should stop readaheading under such circumstances。If it's true
>> how to fix it?
>
> Good question. Before OOM there will be readahead thrashings, which
> can be addressed by this patch:
>
> http://lkml.org/lkml/2010/2/2/229
Hi, I'm not clear about the patch, could be regard as below cases?
1) readahead alloc fail due to low memory such as other large allocation
2) readahead thrashing caused by itself
>
> However there seems no much interest on that feature.. I can separate
> that out and resubmit it standalone if necessary.
>
> Thanks,
> Fengguang
>
--
Regards
dave
next prev parent reply other threads:[~2011-04-26 6:05 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-04-26 5:49 readahead and oom Dave Young
2011-04-26 5:55 ` Wu Fengguang
2011-04-26 6:05 ` Dave Young [this message]
2011-04-26 6:07 ` Dave Young
2011-04-26 6:25 ` Wu Fengguang
2011-04-26 6:29 ` Dave Young
2011-04-26 6:34 ` Wu Fengguang
2011-04-26 6:50 ` KOSAKI Motohiro
2011-04-26 7:41 ` Minchan Kim
2011-04-26 9:20 ` Wu Fengguang
2011-04-26 9:28 ` Minchan Kim
2011-04-26 10:18 ` Pekka Enberg
2011-04-26 19:47 ` Andrew Morton
2011-04-28 4:19 ` Wu Fengguang
2011-04-28 13:36 ` [RFC][PATCH] mm: cut down __GFP_NORETRY page allocation failures Wu Fengguang
2011-04-28 13:38 ` [patch] vmstat: account " Wu Fengguang
2011-04-28 13:50 ` KOSAKI Motohiro
2011-04-29 2:28 ` [RFC][PATCH] mm: cut down __GFP_NORETRY " Wu Fengguang
2011-04-29 2:58 ` Wu Fengguang
2011-04-30 14:17 ` Wu Fengguang
2011-05-01 16:35 ` Minchan Kim
2011-05-01 16:37 ` Minchan Kim
2011-05-02 10:14 ` KOSAKI Motohiro
2011-05-03 0:53 ` Minchan Kim
2011-05-03 1:25 ` KOSAKI Motohiro
2011-05-02 10:29 ` Wu Fengguang
2011-05-02 11:08 ` Wu Fengguang
2011-05-03 0:49 ` Minchan Kim
2011-05-03 3:51 ` Wu Fengguang
2011-05-03 4:17 ` Minchan Kim
2011-05-02 13:29 ` Wu Fengguang
2011-05-02 13:49 ` Wu Fengguang
2011-05-03 0:27 ` Satoru Moriya
2011-05-03 2:49 ` Wu Fengguang
2011-05-04 1:56 ` Dave Young
2011-05-04 2:32 ` Dave Young
2011-05-04 2:56 ` Wu Fengguang
2011-05-04 4:23 ` Wu Fengguang
2011-05-04 4:00 ` Wu Fengguang
2011-05-04 7:33 ` Dave Young
2011-04-26 6:13 ` readahead and oom Wu Fengguang
2011-04-26 6:23 ` Dave Young
2011-04-26 9:37 ` [PATCH] mm: readahead page allocations are OK to fail Wu Fengguang
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=BANLkTik8k9A8N8CPk+eXo9c_syxJFRyFCA@mail.gmail.com \
--to=hidave.darkstar@gmail.com \
--cc=fengguang.wu@intel.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).