From: Miquel van Smoorenburg <miquels@cistron.nl>
To: Marcelo Tosatti <mtosatti@redhat.com>
Cc: Bart Van Assche <bart.vanassche@gmail.com>,
Marco Barbero <marco.barbero@gmail.com>,
linux-kernel@vger.kernel.org, netdev@vger.kernel.org
Subject: Re: OOM killer invoked on 2.6.24.4
Date: Mon, 16 Jun 2008 22:46:57 +0200 [thread overview]
Message-ID: <1213649217.27392.12.camel@localhost.localdomain> (raw)
In-Reply-To: <20080616195538.GA9217@dmt.cnet>
On Mon, 2008-06-16 at 16:55 -0300, Marcelo Tosatti wrote:
> On Sat, Jun 14, 2008 at 05:31:18PM +0200, Bart Van Assche wrote:
> > On Sat, Jun 14, 2008 at 12:13 PM, Marco Barbero <marco.barbero@gmail.com> wrote:
> > > samba/slapd/heartbeat/drbd/mon
> > ...
> > > Jun 14 01:00:17 pippo kernel: Out of memory: kill process 6873 (slapd)
> > > score 5003 or a child
> > > Jun 14 01:00:17 pippo kernel: Killed process 6873 (slapd)
> > >
> > > Anyone can help me in understanding what went wrong? And if I need to
> > > upgrade to last kernel version?
> >
> > One or more processes on your system used too much memory. Dumping the
> > output of the following command periodically (e.g. every 10 minutes)
> > to a file will tell you which process is using too much memory:
> >
> > { ps aux | head -n 1; ps aux | sort -n +4 | tail -n 10; }
>
> There were lots of swap free:
>
> Jun 14 01:00:17 pippo kernel: Free swap = 3903752kB
> Jun 14 01:00:17 pippo kernel: Total swap = 3903752kB
> Jun 14 01:00:17 pippo kernel: Free swap: 3903752kB
>
> Something is wrong.
It was a normal GFP_KERNEL allocation:
Jun 14 01:00:17 pippo kernel: sendmail-mta invoked oom-killer:
gfp_mask=0x800d0, order=0, oomkilladj=0
And the system /is/ low on memory:
Jun 14 01:00:17 pippo kernel: DMA free:3548kB min:68kB low:84kB
high:100kB active:0kB inactive:4kB present:16256kB pages_scanned:25
all_unreclaimable? yes
Jun 14 01:00:17 pippo kernel: lowmem_reserve[]: 0 873 4810 4810
Jun 14 01:00:17 pippo kernel: Normal free:3736kB min:3744kB low:4680kB
high:5616kB active:4616kB inactive:4672kB present:894080kB
pages_scanned:14277 all_unreclaimable? yes
Jun 14 01:00:17 pippo kernel: lowmem_reserve[]: 0 0 31496 31496
Jun 14 01:00:17 pippo kernel: HighMem free:2975684kB min:512kB
low:4736kB high:8960kB active:248580kB inactive:21644kB
present:4031488kB pages_scanned:0 all_unreclaimable? no
Still high memory available, and swap, but ZONE_DMA and ZONE_NORMAL were
all used and "all_unreclaimable? yes" . So __alloc_pages(GFP_KERNEL)
fails.
It might be tcp buffers- see
http://marc.info/?l=linux-netdev&m=121362441431941&w=2
In which case, use this workaround:
echo "98304 131072 196608" > /proc/sys/net/ipv4/tcp_mem
Mike.
parent reply other threads:[~2008-06-16 20:47 UTC|newest]
Thread overview: expand[flat|nested] mbox.gz Atom feed
[parent not found: <20080616195538.GA9217@dmt.cnet>]
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=1213649217.27392.12.camel@localhost.localdomain \
--to=miquels@cistron.nl \
--cc=bart.vanassche@gmail.com \
--cc=linux-kernel@vger.kernel.org \
--cc=marco.barbero@gmail.com \
--cc=mtosatti@redhat.com \
--cc=netdev@vger.kernel.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).