From: Eric Dumazet <eric.dumazet@gmail.com>
To: Chris Adams <cmadams@hiwaay.net>
Cc: netdev@vger.kernel.org
Subject: Re: r8169 performance?
Date: Sun, 04 Dec 2011 22:50:02 +0100 [thread overview]
Message-ID: <1323035402.2762.189.camel@edumazet-laptop> (raw)
In-Reply-To: <20111204211007.GA32098@hiwaay.net>
Le dimanche 04 décembre 2011 à 15:10 -0600, Chris Adams a écrit :
> I have a system with an on-board RealTek gigabit network interface that
> is giving me poor performance. I'm using a simple test, running "nc -l"
> on one system and "dd if=/dev/zero | nc" on another. I see about 280
> 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 ?
netstat -s
ethtool -S ethX
cat /proc/net/softnet_stat
next prev parent reply other threads:[~2011-12-04 21:50 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-12-04 21:10 r8169 performance? Chris Adams
2011-12-04 21:50 ` Eric Dumazet [this message]
2011-12-04 22:02 ` Chris Adams
2011-12-04 23:40 ` Francois Romieu
2011-12-05 0:46 ` Chris Adams
2011-12-05 6:44 ` Francois Romieu
2011-12-05 14:54 ` Chris Adams
2011-12-06 8:22 ` Francois Romieu
2011-12-07 4:19 ` Chris Adams
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1323035402.2762.189.camel@edumazet-laptop \
--to=eric.dumazet@gmail.com \
--cc=cmadams@hiwaay.net \
--cc=netdev@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox