netdev - Re: e1000 full-duplex TCP performance well below wire speed

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Message-ID: <Pine.LNX.4.63.0801301707450.19938@trinity.phys.uwm.edu>
Date:	Wed, 30 Jan 2008 17:15:41 -0600 (CST)
From:	Bruce Allen <ballen@...vity.phys.uwm.edu>
To:	Rick Jones <rick.jones2@...com>
cc:	"Brandeburg, Jesse" <jesse.brandeburg@...el.com>,
	netdev@...r.kernel.org,
	Carsten Aulbert <carsten.aulbert@....mpg.de>,
	Henning Fehrmann <henning.fehrmann@....mpg.de>,
	Bruce Allen <bruce.allen@....mpg.de>
Subject: Re: e1000 full-duplex TCP performance well below wire speed

Hi Rick,

First off, thanks for netperf. I've used it a lot and find it an extremely 
useful tool.

>> As asked in LKML thread, please post the exact netperf command used to
>> start the client/server, whether or not you're using irqbalanced (aka
>> irqbalance) and what cat /proc/interrupts looks like (you ARE using MSI,
>> right?)
>
> In particular, it would be good to know if you are doing two concurrent 
> streams, or if you are using the "burst mode" TCP_RR with large 
> request/response sizes method which then is only using one connection.

I'm not sure -- must wait for Henning and Carsten to respond tomorrow.

Cheers,
 	Bruce
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