From: Jiri Slaby <jslaby@suse.cz>
To: linux-mm <linux-mm@kvack.org>
Cc: Mel Gorman <mgorman@suse.de>,
Andrew Morton <akpm@linux-foundation.org>,
Valdis Kletnieks <Valdis.Kletnieks@vt.edu>,
LKML <linux-kernel@vger.kernel.org>,
Rik van Riel <riel@redhat.com>
Subject: kswapd craziness round 2
Date: Sun, 17 Feb 2013 23:02:59 +0100 [thread overview]
Message-ID: <51215393.1070409@suse.cz> (raw)
Hi,
You still feel the sour taste of the "kswapd craziness in v3.7" thread,
right? Welcome to the hell, part two :{.
I believe this started happening after update from
3.8.0-rc4-next-20130125 to 3.8.0-rc7-next-20130211. The same as before,
many hours of uptime are needed and perhaps some suspend/resume cycles
too. Memory pressure is not high, plenty of I/O cache:
# free
total used free shared buffers cached
Mem: 6026692 5571184 455508 0 351252 2016648
-/+ buffers/cache: 3203284 2823408
Swap: 0 0 0
kswap is working very toughly though:
root 580 0.6 0.0 0 0 ? S uno12 46:21 [kswapd0]
This happens on I/O activity right now. For example by updatedb or find
/. This is what the stack trace of kswapd0 looks like:
[<ffffffff8113c431>] shrink_slab+0xa1/0x2d0
[<ffffffff8113ecd1>] kswapd+0x541/0x930
[<ffffffff810a3000>] kthread+0xc0/0xd0
[<ffffffff816beb5c>] ret_from_fork+0x7c/0xb0
[<ffffffffffffffff>] 0xffffffffffffffff
Any ideas?
thanks,
--
js
suse labs
--
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/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
next reply other threads:[~2013-02-17 22:03 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-17 22:02 Jiri Slaby [this message]
[not found] <5121C7AF.2090803@numascale-asia.com>
[not found] ` <CAJd=RBArPT8YowhLuE8YVGNfH7G-xXTOjSyDgdV2RsatL-9m+Q@mail.gmail.com>
[not found] ` <51254AD2.7000906@suse.cz>
[not found] ` <CAJd=RBCiYof5rRVK+62OFMw+5F=5rS=qxRYF+OHpuRz895bn4w@mail.gmail.com>
[not found] ` <512F8D8B.3070307@suse.cz>
[not found] ` <CAJd=RBD=eT=xdEy+v3GBZ47gd47eB+fpF-3VtfpLAU7aEkZGgA@mail.gmail.com>
[not found] ` <5138EC6C.6030906@suse.cz>
2013-03-08 6:42 ` kswapd craziness round 2 Hillf Danton
2013-03-08 7:29 ` Zlatko Calusic
2013-03-08 8:27 ` Hillf Danton
2013-03-08 23:21 ` Jiri Slaby
2013-03-19 16:59 ` Pádraig Brady
2013-03-20 4:12 ` Hillf Danton
2013-03-20 8:39 ` Jiri Slaby
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=51215393.1070409@suse.cz \
--to=jslaby@suse.cz \
--cc=Valdis.Kletnieks@vt.edu \
--cc=akpm@linux-foundation.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=mgorman@suse.de \
--cc=riel@redhat.com \
/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).