netdev - Re: Bad network performance over 2Gbps

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Date:	Thu, 17 Apr 2008 13:02:30 +0300
From:	Anton Titov <a.titov@...t.bg>
To:	Chris Snook <csnook@...hat.com>
Cc:	"Kok, Auke" <auke-jan.h.kok@...el.com>,
	"H. Willstrand" <h.willstrand@...il.com>, netdev@...r.kernel.org,
	Jesse Brandeburg <jesse.brandeburg@...el.com>
Subject: Re: Bad network performance over 2Gbps

On Tue, 2008-04-15 at 16:59 -0400, Chris Snook wrote:
> Still, I think you're on to something here.  Disabling NAPI and instead 
> tuning the cards' interrupt coalescing settings might allow irqbalance 
> to do a better job than it is currently.

Disabling NAPI allowed me to push as much as 3.5Gbit out of the same
server with ~ 20% of time CPUs doing software interrupts.

Regards,
Anton Titov

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