From: Sam Roberts <vieuxtech@gmail.com>
To: Eric Dumazet <eric.dumazet@gmail.com>,
netfilter-devel <netfilter-devel@vger.kernel.org>
Subject: Re: netfilter queue throughput slowdown
Date: Thu, 30 Jun 2011 15:24:18 -0700 [thread overview]
Message-ID: <BANLkTimJKxShXcxaS7AijtDwvhET0zLWOg@mail.gmail.com> (raw)
In-Reply-To: <1309446900.1994.17.camel@edumazet-HP-Compaq-6005-Pro-SFF-PC>
On Thu, Jun 30, 2011 at 8:15 AM, Eric Dumazet <eric.dumazet@gmail.com> wrote:
> Le jeudi 30 juin 2011 à 13:59 +0200, Patrick McHardy a écrit :
>
>> Thanks Eric, I agree. Give us data and we'll fix it if really is a bug.
>>
>> The fact that the timeout patch apparently helps indicates that some
>> packets don't receive verdicts.
>
> My rough guess is that this user application gets an error in its
> nfq_set_verdict() call ( maybe a transient out of memory indication) and
> packet never gets its verdict.
Hows does ENOBUFS interact with the queue? Is it possible that the
kernel->userspace notification of the packet id gets dropped, and
userspace is thus never notified of the packet id, and can't issue a
verdict?
Sam
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next prev parent reply other threads:[~2011-06-30 22:24 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-06-29 9:17 netfilter queue throughput slowdown Anders Nilsson Plymoth
2011-06-29 9:47 ` Eric Dumazet
2011-06-29 9:55 ` Anders Nilsson Plymoth
2011-06-29 10:08 ` Eric Dumazet
2011-06-30 6:20 ` Kuzin Andrey
2011-06-30 6:47 ` Eric Dumazet
2011-06-30 7:36 ` Kuzin Andrey
2011-06-30 11:34 ` Eric Dumazet
2011-06-30 11:59 ` Patrick McHardy
2011-06-30 15:15 ` Eric Dumazet
2011-06-30 14:32 ` Stephen Clark
2011-06-30 14:51 ` Patrick McHardy
2011-06-30 17:07 ` Eric Leblond
2011-06-30 17:45 ` Eric Dumazet
2011-06-30 18:08 ` Eric Leblond
2011-07-01 6:39 ` Amos Jeffries
2011-07-01 7:00 ` [RFC] nfnetlink_queue not scalable Eric Dumazet
2011-07-01 7:49 ` Florian Westphal
2011-07-01 15:27 ` [PATCH 1/2] nfnetlink: add RCU in nfnetlink_rcv_msg() Eric Dumazet
2011-07-01 14:11 ` Florian Westphal
2011-07-05 13:22 ` Patrick McHardy
2011-07-18 14:06 ` Patrick McHardy
2011-07-01 15:08 ` netfilter queue throughput slowdown Anders Nilsson Plymoth
2011-06-30 22:24 ` Sam Roberts [this message]
2011-07-01 4:53 ` Eric Dumazet
2011-06-30 22:26 ` Sam Roberts
2011-07-01 4:52 ` Eric Dumazet
2011-07-02 12:25 ` Pablo Neira Ayuso
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