From mboxrd@z Thu Jan  1 00:00:00 1970
From: Eric Dumazet <eric.dumazet@gmail.com>
Subject: Re: r8169 performance?
Date: Sun, 04 Dec 2011 22:50:02 +0100
Message-ID: <1323035402.2762.189.camel@edumazet-laptop>
References: <20111204211007.GA32098@hiwaay.net>
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Cc: netdev@vger.kernel.org
To: Chris Adams <cmadams@hiwaay.net>
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Le dimanche 04 d=C3=A9cembre 2011 =C3=A0 15:10 -0600, Chris Adams a =C3=
=A9crit :
> I have a system with an on-board RealTek gigabit network interface th=
at
> is giving me poor performance.  I'm using a simple test, running "nc =
-l"
> on one system and "dd if=3D/dev/zero | nc" on another.  I see about 2=
80
> Mbps transmit and 511 Mbps receive.


Do you mean that if this problematic NIC is the receiver, it receives
280Mbps, and if it is the sender, speed is 511 Mbps ?

Could you check counters ? =20

netstat -s
ethtool -S ethX
cat /proc/net/softnet_stat