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From: Eric Dumazet <dada1@cosmosbay.com>
To: Caleb Cushing <xenoterracide@gmail.com>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	Linux Netdev List <netdev@vger.kernel.org>
Subject: Re: e1000e 2.6.30.1 massive packet loss
Date: Thu, 16 Jul 2009 10:04:07 +0200	[thread overview]
Message-ID: <4A5EDEF7.7090303@cosmosbay.com> (raw)
In-Reply-To: <81bfc67a0907160049q3d43093cy52276f0fe1157d89@mail.gmail.com>

Caleb Cushing a écrit :
> So from 2.6.30 to .1 I noticed that via an icmp test (mtr) 20-50%
> packet loss web browsing became impractical (downgrading fixed the
> issue). I'm wondering if the change to the driver (w/ msi) is the
> cause? also wondering if this is known and will be fixed in .2 I can
> provide more information if necessary.
> 

Added netdev to get more attention to this.

What do you call 20-50% packet loss ?
(Losses to icmp flood itself, or tcp losses ?
Is the machine answering to icmp flood, or is it the origin ?

Are you saying packet loss was not occurring with 2.6.30 ?

Could you describe your methodology ?

You could give us results of "cat /proc/interrupts" from both
versions, because it sounds as an interrupt affinity problem.

# cat /proc/interrupts
# tc -s -d qdisc
# ifconfig -a

  reply	other threads:[~2009-07-16  8:04 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-07-16  7:49 e1000e 2.6.30.1 massive packet loss Caleb Cushing
2009-07-16  8:04 ` Eric Dumazet [this message]
2009-07-16  8:20   ` Caleb Cushing
2009-07-16  9:05     ` Caleb Cushing

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