From: Eric Dumazet <eric.dumazet@gmail.com>
To: Kieran Mansley <kmansley@solarflare.com>
Cc: netdev@vger.kernel.org
Subject: Re: TCPBacklogDrops during aggressive bursts of traffic
Date: Tue, 15 May 2012 18:34:01 +0200 [thread overview]
Message-ID: <1337099641.8512.1102.camel@edumazet-glaptop> (raw)
In-Reply-To: <1337099368.1689.47.camel@kjm-desktop.uk.level5networks.com>
On Tue, 2012-05-15 at 17:29 +0100, Kieran Mansley wrote:
> On Tue, 2012-05-15 at 16:56 +0200, Eric Dumazet wrote:
> >
> > Please try latest kernels, this is probably 'fixed'
>
> I've just tried with 3.4.0-rc7 and the problem is still reproducible.
> It's perhaps harder to reproduce than on 3.3.6 but still there.
>
> > What network driver are you using ?
>
> The receiver is using the sfc driver that is included in the kernel
> build, together with an SFC 9020 NIC.
>
> Kieran
>
MTU ?
What is typical skb->truesize of skb given to stack in RX path ?
If drivers use PAGE_SIZE fragments, then you are more likely to hit
limit.
next prev parent reply other threads:[~2012-05-15 16:34 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-15 14:38 TCPBacklogDrops during aggressive bursts of traffic Kieran Mansley
2012-05-15 14:56 ` Eric Dumazet
2012-05-15 15:00 ` Eric Dumazet
2012-05-15 16:29 ` Kieran Mansley
2012-05-15 16:34 ` Eric Dumazet [this message]
2012-05-15 16:47 ` Ben Hutchings
2012-05-15 17:01 ` Eric Dumazet
2012-05-15 17:23 ` Eric Dumazet
2012-05-17 16:31 ` Kieran Mansley
2012-05-17 16:37 ` Eric Dumazet
2012-05-18 15:45 ` Kieran Mansley
2012-05-18 15:49 ` Eric Dumazet
2012-05-18 15:53 ` Kieran Mansley
2012-05-18 18:40 ` Eric Dumazet
2012-05-22 8:20 ` Kieran Mansley
2012-05-22 9:25 ` Eric Dumazet
2012-05-22 9:30 ` Eric Dumazet
2012-05-22 15:09 ` Kieran Mansley
2012-05-22 16:12 ` Eric Dumazet
2012-05-22 16:32 ` Kieran Mansley
2012-05-22 16:45 ` Eric Dumazet
2012-05-22 20:54 ` Eric Dumazet
2012-05-23 9:44 ` Eric Dumazet
2012-05-23 12:09 ` Eric Dumazet
2012-05-23 16:04 ` Alexander Duyck
2012-05-23 16:12 ` Eric Dumazet
2012-05-23 16:39 ` Eric Dumazet
2012-05-23 17:10 ` Alexander Duyck
2012-05-23 21:19 ` Alexander Duyck
2012-05-23 21:37 ` Eric Dumazet
2012-05-23 22:03 ` Alexander Duyck
2012-05-23 16:58 ` Alexander Duyck
2012-05-23 17:24 ` Eric Dumazet
2012-05-23 17:57 ` Alexander Duyck
2012-05-23 17:34 ` David Miller
2012-05-23 17:46 ` Eric Dumazet
2012-05-23 17:57 ` David Miller
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