netdev - Re: [patch next 4/4] netxen: disable rss for GbE ports

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Message-ID: <Pine.LNX.4.64.0905070811150.3058@ask.diku.dk>
Date:	Thu, 7 May 2009 08:15:09 +0200 (CEST)
From:	Jesper Dangaard Brouer <hawk@...u.dk>
To:	Dhananjay Phadke <dhananjay@...xen.com>
Cc:	David Miller <davem@...emloft.net>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: [patch next 4/4] netxen: disable rss for GbE ports

On Wed, 6 May 2009, Dhananjay Phadke wrote:

> The reason for RSS was to distribute the ingress traffic
> to different CPUs. At 10Gbps, without RSS, one CPU was
> saturating, acting as bottleneck. I can do 1Gbps with
> only one CPU only 50% saturated, this to on a low end
> server.

1Gbit/s throughput tests with MTU size frames is a bad measurement target.
Packets Per Sec is the key factor.

Hilsen
   Jesper Brouer

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