From: David Rientjes <rientjes@google.com>
To: Marc Duponcheel <marc@offline.be>
Cc: Mel Gorman <mgorman@suse.de>,
Andy Lutomirski <luto@amacapital.net>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [3.6 regression?] THP + migration/compaction livelock (I think)
Date: Sun, 18 Nov 2012 14:55:36 -0800 (PST) [thread overview]
Message-ID: <alpine.DEB.2.00.1211181453550.5080@chino.kir.corp.google.com> (raw)
In-Reply-To: <20121117001826.GC9816@offline.be>
On Sat, 17 Nov 2012, Marc Duponcheel wrote:
> # echo always >/sys/kernel/mm/transparent_hugepage/enabled
> # while [ 1 ]
> do
> sleep 10
> date
> echo = vmstat
> egrep "(thp|compact)" /proc/vmstat
> echo = khugepaged stack
> cat /proc/501/stack
> done > /tmp/49361.xxxx
> # emerge icedtea
> (where 501 = pidof khugepaged)
>
> for xxxx = base = 3.6.6
> and xxxx = test = 3.6.6 + diff you provided
>
> I attach
> /tmp/49361.base.gz
> and
> /tmp/49361.test.gz
>
> Note:
>
> with xxx=base, I could see
> PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
> 8617 root 20 0 3620m 41m 10m S 988.3 0.5 6:19.06 javac
> 1 root 20 0 4208 588 556 S 0.0 0.0 0:03.25 init
> already during configure and I needed to kill -9 javac
>
> with xxx=test, I could see
> PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
> 9275 root 20 0 2067m 474m 10m S 304.2 5.9 0:32.81 javac
> 710 root 0 -20 0 0 0 S 0.3 0.0 0:01.07 kworker/0:1H
> later when processing >700 java files
>
> Also note that with xxx=test compact_blocks_moved stays 0
>
Sounds good! Andy, have you had the opportunity to try to reproduce your
issue with the backports that Mel listed? I think he'll be considering
asking for some of these to be backported for a future stable release so
any input you can provide would certainly be helpful.
next prev parent reply other threads:[~2012-11-18 22:55 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-13 22:13 [3.6 regression?] THP + migration/compaction livelock (I think) Andy Lutomirski
2012-11-13 23:11 ` David Rientjes
2012-11-13 23:25 ` Andy Lutomirski
2012-11-13 23:41 ` David Rientjes
2012-11-13 23:45 ` Andy Lutomirski
2012-11-13 23:54 ` David Rientjes
2012-11-14 1:22 ` Marc Duponcheel
2012-11-14 1:51 ` David Rientjes
2012-11-14 13:21 ` Marc Duponcheel
2012-11-14 10:01 ` Mel Gorman
2012-11-14 13:29 ` Marc Duponcheel
2012-11-14 21:50 ` David Rientjes
2012-11-15 1:14 ` Marc Duponcheel
2012-11-17 0:18 ` Marc Duponcheel
2012-11-18 22:55 ` David Rientjes [this message]
2012-12-05 19:23 ` Andy Lutomirski
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=alpine.DEB.2.00.1211181453550.5080@chino.kir.corp.google.com \
--to=rientjes@google.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=luto@amacapital.net \
--cc=marc@offline.be \
--cc=mgorman@suse.de \
/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).