From: Hillf Danton <dhillf@gmail.com>
To: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: "Nikolay S." <nowhere@hakkenden.ath.cx>,
Dave Chinner <david@fromorbit.com>, Michal Hocko <mhocko@suse.cz>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: Kswapd in 3.2.0-rc5 is a CPU hog
Date: Tue, 27 Dec 2011 21:33:04 +0800 [thread overview]
Message-ID: <CAJd=RBBVKqwiDRgpQnVEzB6kQc2X0rCyMpNUzJb0-akJ9OTv0g@mail.gmail.com> (raw)
In-Reply-To: <20111227092052.f2b02637.kamezawa.hiroyu@jp.fujitsu.com>
On Tue, Dec 27, 2011 at 8:20 AM, KAMEZAWA Hiroyuki
<kamezawa.hiroyu@jp.fujitsu.com> wrote:
> On Mon, 26 Dec 2011 20:35:46 +0800
> Hillf Danton <dhillf@gmail.com> wrote:
>
>> On Sun, Dec 25, 2011 at 6:21 PM, Nikolay S. <nowhere@hakkenden.ath.cx> wrote:
>> >
>> > Uhm.., is this patch against 3.2-rc4? I can not apply it. There's no
>> > mem_cgroup_lru_del_list(), but void mem_cgroup_del_lru_list(). Should I
>> > place changes there?
>> >
>> > And also, -rc7 is here. May the problem be addressed as part of some
>> > ongoing work? Is there any reason to try -rc7 (the problem requires
>> > several days of uptime to become obvious)?
>> >
>>
>> Sorry, Nikolay, it is not based on the -next, nor on the -rc5(I assumed it was).
>> The following is based on -next, and if you want to test -rc5, please
>> grep MEM_CGROUP_ZSTAT mm/memcontrol.c and change it.
>>
>> Best regard
>>
>
> Hmm ? memcg is used ? Why do you consider this will be a help ?
>
Hi Kame
Please see the livelock at
https://lkml.org/lkml/2011/12/23/222
and if it is related to the hog here, please check if the following is
in right direction.
Thanks
Hillf
---
--- a/mm/memcontrol.c Mon Dec 26 20:34:38 2011
+++ b/mm/memcontrol.c Tue Dec 27 20:05:12 2011
@@ -3637,6 +3637,7 @@ static int mem_cgroup_force_empty_list(s
list = &mz->lruvec.lists[lru];
loop = MEM_CGROUP_ZSTAT(mz, lru);
+ WARN_ON((long)loop < 0);
/* give some margin against EBUSY etc...*/
loop += 256;
busy = NULL;
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
next prev parent reply other threads:[~2011-12-27 13:33 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1324437036.4677.5.camel@hakkenden.homenet>
2011-12-21 9:52 ` Michal Hocko
2011-12-21 10:15 ` nowhere
2011-12-21 10:24 ` Michal Hocko
2011-12-21 10:52 ` nowhere
2011-12-21 14:06 ` Alex Elder
2011-12-21 14:19 ` nowhere
2011-12-21 22:55 ` Dave Chinner
2011-12-23 9:01 ` nowhere
2011-12-23 10:20 ` Dave Chinner
2011-12-23 11:04 ` nowhere
2011-12-23 20:45 ` Dave Chinner
2011-12-25 9:09 ` Hillf Danton
2011-12-25 10:21 ` Nikolay S.
2011-12-26 12:35 ` Hillf Danton
2011-12-27 0:20 ` KAMEZAWA Hiroyuki
2011-12-27 13:33 ` Hillf Danton [this message]
2011-12-28 0:06 ` KAMEZAWA Hiroyuki
2011-12-27 2:15 ` KAMEZAWA Hiroyuki
2011-12-27 2:50 ` Nikolay S.
2011-12-27 4:44 ` KAMEZAWA Hiroyuki
2011-12-27 6:06 ` nowhere
2011-12-28 21:33 ` Dave Chinner
2011-12-28 22:57 ` KOSAKI Motohiro
2012-01-02 7:00 ` Dave Chinner
2011-12-27 3:57 ` Minchan Kim
2011-12-27 4:56 ` KAMEZAWA Hiroyuki
2012-01-10 22:33 ` Andrew Morton
2012-01-11 3:25 ` Nikolay S.
2012-01-11 4:42 ` Andrew Morton
2012-01-11 0:33 ` Dave Chinner
2012-01-11 1:17 ` Rik van Riel
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='CAJd=RBBVKqwiDRgpQnVEzB6kQc2X0rCyMpNUzJb0-akJ9OTv0g@mail.gmail.com' \
--to=dhillf@gmail.com \
--cc=david@fromorbit.com \
--cc=kamezawa.hiroyu@jp.fujitsu.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=mhocko@suse.cz \
--cc=nowhere@hakkenden.ath.cx \
/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