From mboxrd@z Thu Jan  1 00:00:00 1970
From: Eric Dumazet <eric.dumazet@gmail.com>
Subject: Re: 3.4.1 and 3.5-rc1 Packet lost at 250Mb/s
Date: Fri, 08 Jun 2012 11:41:55 +0200
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References: <ddae4973ddff0015d239dd66551be209@justnet.pl>
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To: adam.niescierowicz@justnet.pl
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On Fri, 2012-06-08 at 10:58 +0200, Nie=C5=9Bcierowicz Adam wrote:
> Hello,
>=20
> recently we changed on the router kernel from 2.6.38.1 to 3.4.1 and=20
> noticed
> 30% packet loss when traffic increases up to 250MB / s.
>=20
> Similar is for kernel 3.5-rc1
>=20
> Here a link to ifstat http://wklej.org/id/767577/

You should give as much as possible delails on your setup (hardware,
software)

lspci
cat /proc/cpuinfo
cat /proc/interrupts
ifconfig -a
tc -s -d qdisc
dmesg
netstat -s