linux-kernel - Re: large packet loss take2 2.6.31.x

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Date:	Thu, 12 Nov 2009 08:46:07 -0500
From:	Caleb Cushing <xenoterracide@...il.com>
To:	Jarek Poplawski <jarkao2@...il.com>
Cc:	Frans Pop <elendil@...net.nl>, Andi Kleen <andi@...stfloor.org>,
	linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: large packet loss take2 2.6.31.x

> On 11-11-2009 22:47, Andi Kleen wrote:
> ...
>> It might be also useful if you could describe what kind
>> of network devices you use and how you determine
>> the packet loss.
>
> Btw, you didn't send the stats you compared, and your wireshark dump
> doesn't show anything wrong either.
>
> Jarek P.
>

I didn't see that sorry. I wasn't sure if the dump would or not (I'm
not a networking expert, just know more than the average joe).

from dmesg (networking device)

e1000e: Intel(R) PRO/1000 Network Driver - 1.0.2-k2

from lspci

00:19.0 Ethernet controller: Intel Corporation 82562V-2 10/100 Network
Connection (rev 02)

the attached png's show mtr with bad being when I have the problem.
for those not familiar mtr sends an icmp packet to each hop in 1
second then loops. when I'm having this kind of packet loss (and
sometimes it's higher) all services including dhcp, dns, and http (web
browsing) get flaky, or don't work at all (I really can't browse the
web).
-- 
Caleb Cushing

http://xenoterracide.blogspot.com

Download attachment "mtr_good.png" of type "image/png" (179391 bytes)

Download attachment "mtr_bad.png" of type "image/png" (137799 bytes)