From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Mikael Abrahamsson <swmike@swm.pp.se>
Cc: linux-kernel@vger.kernel.org
Subject: Re: 2.6.32 swapper allocation failure with plenty of memory available
Date: Tue, 10 Aug 2010 19:37:02 +1000 [thread overview]
Message-ID: <1281433022.28245.201.camel@pasglop> (raw)
In-Reply-To: <alpine.DEB.1.10.1008100757470.19930@uplift.swm.pp.se>
On Tue, 2010-08-10 at 08:05 +0200, Mikael Abrahamsson wrote:
> Hi.
>
> Yesterday my Ubuntu 10.04 machine with their 2.6.32 (amd64) kernel, under
> a lot of disk IO and network stress stopped responding. I thought it had
> frozen completely, but ~2 hours later it came back to life.
>
> When I logged in I saw a lot of "swapper allocation failure" and r8169
> timeouts in dmesg (first time I've seen this cause network instability
> like this, but it's also the first motherboard I've tested with that has a
> r8169 NIC).
.../...
I noticed that on a completely different setup as well... 2.6.32 tend to
have a hard time servicing the skb allocations for demanding network
drivers.
Probably some threshold in the VM that might want tuning...
Cheers,
Ben.
prev parent reply other threads:[~2010-08-10 9:37 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-08-10 6:05 Mikael Abrahamsson
2010-08-10 9:37 ` Benjamin Herrenschmidt [this message]
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=1281433022.28245.201.camel@pasglop \
--to=benh@kernel.crashing.org \
--cc=linux-kernel@vger.kernel.org \
--cc=swmike@swm.pp.se \
/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
Powered by JetHome