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

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Message-ID: <OF46DAD75A.5ADE5863-ON65257346.001C9AA3-65257346.001CB0F4@in.ibm.com>
Date:	Wed, 29 Aug 2007 10:43:23 +0530
From:	Krishna Kumar2 <krkumar2@...ibm.com>
To:	David Miller <davem@...emloft.net>
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,
	netdev-owner@...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

netdev-owner@...r.kernel.org wrote on 08/29/2007 10:21:50 AM:

> 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.

OK

> 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?

The reason was to run parallel copies, not for buffer limitations.
Let me use the same tool for benchmark.

Thanks,

- KK

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