From: Eric Dumazet <eric.dumazet@gmail.com>
To: Larry Finger <Larry.Finger@lwfinger.net>
Cc: marc@merlins.org, David Miller <davem@davemloft.net>,
bhutchings@solarflare.com, linux-wireless@vger.kernel.org,
netdev@vger.kernel.org
Subject: Re: 3.2.8/amd64 full interrupt hangs and deadlocks under big network copies (page allocation failure)
Date: Mon, 09 Apr 2012 21:11:12 +0200 [thread overview]
Message-ID: <1333998672.3007.245.camel@edumazet-glaptop> (raw)
In-Reply-To: <4F83316F.20504@lwfinger.net>
On Mon, 2012-04-09 at 13:58 -0500, Larry Finger wrote:
> As it happens with both iwlwifi and e1000e, it seems to be a problem further up
> the food chain.
>
> I don't know much about iwlwifi, but loading it with the module parameter
> "amsdu_size_8K=0" seems to select 4K rather than 8K buffers. That will hurt
> performance, but it should fix the memory fragmentation. There have also been
> some problems with aggregation that are fixed by setting the option "11n_disable=3".
I think Marc posted stack traces showing problem on transmit side.
09:44:12 [<ffffffff810ba394>] ? __alloc_pages_nodemask+0x6b2/0x726
09:44:12 [<ffffffff810e9081>] ? kmem_getpages+0x4c/0xd9
09:44:12 [<ffffffff810e9081>] ? kmem_getpages+0x4c/0xd9
09:44:12 [<ffffffff810ea421>] ? fallback_alloc+0x123/0x1c2
09:44:12 [<ffffffff8127daae>] ? pskb_expand_head+0xe0/0x24a
09:44:12 [<ffffffff810ea923>] ? __kmalloc+0xba/0x112
09:44:12 [<ffffffff8127daae>] ? pskb_expand_head+0xe0/0x24a
09:44:12 [<ffffffffa07a81c0>] ? ieee80211_skb_resize+0x64/0x9d [mac80211]
09:44:12 [<ffffffffa07aa087>] ? ieee80211_subif_start_xmit+0x68e/0x80c [mac80211]
09:44:12 [<ffffffffa07922c8>] ? ieee80211_tx_status_irqsafe+0x2e/0x7f [mac80211]
09:44:12 [<ffffffff812877f3>] ? dev_hard_start_xmit+0x3fc/0x543
09:44:12 [<ffffffff81070551>] ? arch_local_irq_save+0x11/0x17
09:44:12 [<ffffffff8129da01>] ? sch_direct_xmit+0x5e/0x12f
09:44:12 [<ffffffff8129dbc9>] ? __qdisc_run+0xf7/0x10f
I dont really understand how it can happen, with MTU=1500
next prev parent reply other threads:[~2012-04-09 19:11 UTC|newest]
Thread overview: 55+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-29 16:38 3.2.8/amd64 full interrupt hangs and deadlocks under big network copies (page allocation failure) Marc MERLIN
[not found] ` <20120311183244.GA14001@merlins.org>
[not found] ` <20120329053111.GD24933@merlins.org>
[not found] ` <20120329163800.GH24933-xnduUnryOU1AfugRpC6u6w@public.gmane.org>
[not found] ` <20120329053111.GD24933-xnduUnryOU1AfugRpC6u6w@public.gmane.org>
2012-03-29 16:41 ` Marc MERLIN
2012-03-29 18:09 ` Ben Hutchings
[not found] ` <1333044575.2656.1.camel-/LGg1Z1CJKReKY3V0RtoKmatzQS1i7+A3tAM5lWOD0I@public.gmane.org>
2012-03-29 21:19 ` Marc MERLIN
2012-04-09 17:20 ` Marc MERLIN
2012-04-09 18:12 ` David Miller
[not found] ` <20120409.141241.1216091936509309354.davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org>
2012-04-09 18:36 ` Marc MERLIN
2012-04-09 18:37 ` David Miller
2012-04-09 18:58 ` Larry Finger
2012-04-09 19:11 ` Eric Dumazet [this message]
2012-04-09 19:34 ` David Miller
[not found] ` <20120409.153452.1284163346306246866.davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org>
2012-04-09 19:46 ` Marc MERLIN
2012-04-10 3:56 ` Eric Dumazet
2012-04-10 5:11 ` Marc MERLIN
2012-04-10 6:11 ` Eric Dumazet
2012-04-11 5:27 ` Marc MERLIN
[not found] ` <20120411052733.GA17352-xnduUnryOU1AfugRpC6u6w@public.gmane.org>
2012-04-11 5:43 ` Eric Dumazet
2012-04-11 6:30 ` [PATCH] tcp: avoid order-1 allocations on wifi and tx path Eric Dumazet
2012-04-11 7:38 ` Eric Dumazet
2012-04-11 14:12 ` David Miller
2012-04-11 14:11 ` David Miller
2012-04-11 6:08 ` [PATCH] net: allow pskb_expand_head() to get maximum tailroom Eric Dumazet
2012-04-11 14:11 ` David Miller
2012-07-15 21:59 ` 3.4.4/amd64 full interrupt hangs under big nfs copies Marc MERLIN
2012-07-16 6:18 ` Eric Dumazet
2012-07-16 15:18 ` Marc MERLIN
2012-07-16 16:21 ` Eric Dumazet
2012-07-16 17:17 ` Marc MERLIN
2013-02-19 4:05 ` 3.7.8/amd64 full interrupt hangs due to iwlwifi under big nfs copies out Marc MERLIN
2013-02-19 5:17 ` Eric Dumazet
2013-02-19 5:26 ` Marc MERLIN
2013-02-19 10:03 ` Johannes Berg
2013-02-19 16:18 ` Marc MERLIN
2013-02-19 16:36 ` Eric Dumazet
2013-02-19 16:21 ` Eric Dumazet
2013-02-20 9:12 ` Johannes Berg
2013-02-20 9:15 ` Johannes Berg
2013-02-20 15:11 ` Eric Dumazet
2013-02-20 16:20 ` Johannes Berg
[not found] ` <1361377243.8629.34.camel-8Nb76shvtaUJvtFkdXX2HixXY32XiHfO@public.gmane.org>
2013-02-20 16:55 ` Eric Dumazet
2013-02-20 16:59 ` Johannes Berg
2013-02-20 17:39 ` Eric Dumazet
2013-02-20 17:01 ` Johannes Berg
2013-02-20 17:24 ` Eric Dumazet
2013-02-20 18:16 ` Johannes Berg
2013-02-20 19:17 ` Eric Dumazet
2013-02-20 19:58 ` Johannes Berg
2013-02-20 20:14 ` Eric Dumazet
2013-02-20 20:27 ` Johannes Berg
2013-02-20 20:09 ` Johannes Berg
2013-02-23 6:14 ` Marc MERLIN
2013-02-26 20:54 ` Johannes Berg
[not found] ` <1361912099.8440.21.camel-8Nb76shvtaUJvtFkdXX2HixXY32XiHfO@public.gmane.org>
2013-06-18 16:52 ` Eric Dumazet
2013-06-18 17:04 ` Johannes Berg
2013-06-19 13:09 ` Stanislaw Gruszka
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=1333998672.3007.245.camel@edumazet-glaptop \
--to=eric.dumazet@gmail.com \
--cc=Larry.Finger@lwfinger.net \
--cc=bhutchings@solarflare.com \
--cc=davem@davemloft.net \
--cc=linux-wireless@vger.kernel.org \
--cc=marc@merlins.org \
--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