From: Rick Jones <rick.jones2@hp.com>
To: Jan Engelhardt <jengelh@inai.de>
Cc: Eric Dumazet <eric.dumazet@gmail.com>,
Linux Networking Developer Mailing List <netdev@vger.kernel.org>
Subject: Re: TSO on veth device slows transmission to a crawl
Date: Wed, 08 Apr 2015 11:19:02 -0700 [thread overview]
Message-ID: <55257116.30300@hp.com> (raw)
In-Reply-To: <alpine.LSU.2.20.1504081938320.14413@nerf40.vanv.qr>
On 04/08/2015 11:16 AM, Jan Engelhardt wrote:
> One more thing to be aware of is that iptraf counts all the
> headers, which netperf likely is not doing.
>
> -m 1: iptraf 57 MBit/s, netperf 0.69*10^6
> -m 10: iptraf 63 MBit/s, netperf 6.76*10^6
> -m 100: iptraf 114 MBit/s, netperf 75.74*10^6
> <no -m>: iptraf~580 MBit/s, netperf 542.00*10^6
Indeed, netperf makes no attempt to count headers. What it reports is
strictly above the socket interface.
rick
next prev parent reply other threads:[~2015-04-08 18:19 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-04-06 22:45 TSO on veth device slows transmission to a crawl Jan Engelhardt
2015-04-07 2:48 ` Eric Dumazet
2015-04-07 9:54 ` Jan Engelhardt
2015-04-07 19:49 ` Eric Dumazet
2015-04-08 17:09 ` Jan Engelhardt
2015-04-08 17:20 ` Rick Jones
2015-04-08 18:16 ` Jan Engelhardt
2015-04-08 18:19 ` Rick Jones [this message]
2015-04-09 9:24 ` Eric Dumazet
2015-04-09 10:01 ` Eric Dumazet
2015-04-09 10:26 ` Jan Engelhardt
2015-04-09 15:08 ` Eric Dumazet
2015-04-09 15:35 ` Jan Engelhardt
2015-04-09 15:55 ` Eric Dumazet
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