netdev - Re: [PATCH 0/9 Rev3] Implement batching skb API and support in IPoIB

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Message-Id: <20070828.215150.98552996.davem@davemloft.net>
Date:	Tue, 28 Aug 2007 21:51:50 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	krkumar2@...ibm.com
Cc:	gaagaan@...il.com, general@...ts.openfabrics.org, hadi@...erus.ca,
	herbert@...dor.apana.org.au, jagana@...ibm.com, jeff@...zik.org,
	johnpol@....mipt.ru, kaber@...sh.net, kumarkr@...ux.ibm.com,
	mcarlson@...adcom.com, mchan@...adcom.com, netdev@...r.kernel.org,
	peter.p.waskiewicz.jr@...el.com, rdreier@...co.com,
	rick.jones2@...com, Robert.Olsson@...a.slu.se,
	shemminger@...ux-foundation.org, sri@...ibm.com, tgraf@...g.ch,
	xma@...ibm.com
Subject: Re: [PATCH 0/9 Rev3] Implement batching skb API and support in
 IPoIB

From: Krishna Kumar2 <krkumar2@...ibm.com>
Date: Wed, 29 Aug 2007 08:53:30 +0530

> I am scp'ng from 192.168.1.1 to 192.168.1.2 and captured at the send
> side.

Bad choice of test, this is cpu limited since the scp
has to encrypt and MAC hash all the data it sends.

Use something like straight ftp or "bw_tcp" from lmbench.

Using a different tool seems strange to me, why not just adjust the
buffer size with command line options in the benchmark you were using
in the first place?
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