netdev - Re: [RFC] random SYN drops causing connect() delays

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Date:	Wed, 28 Apr 2010 07:52:46 +0200
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Thomas Graf <tgraf@...radead.org>
Cc:	David Miller <davem@...emloft.net>, netdev@...r.kernel.org
Subject: Re: [RFC] random SYN drops causing connect() delays

Le mercredi 28 avril 2010 à 00:44 -0400, Thomas Graf a écrit :
> On Tue, Apr 27, 2010 at 06:56:02PM -0700, David Miller wrote:
> > I can't reproduce on my system even with sched_child_runs_first set to '1'.
> > 
> > Are you running identd or something like that which intercepts the connections
> > to port 22 before 'sshd' actually gets it?
> 
> No, sshd is listening on the port directly.
> 
> I am having more difficulties to reproduce the issue with the latest git tree. It
> still happens but I sometimes have to run the test several times to get a single
> delayed connection attempt.

On machine/kernel reproducing the behavior, please send

grep . /proc/sys/net/ipv4/*



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