From mboxrd@z Thu Jan  1 00:00:00 1970
From: Nivedita Singhvi <niv@us.ibm.com>
Subject: Re: TCP performance drop 2.6.6->2.6.7
Date: Fri, 15 Apr 2005 08:30:35 -0700
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Cc: netdev@oss.sgi.com, "David S. Miller" <davem@davemloft.net>,
        Stephen Hemminger <shemminger@osdl.org>
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To: Baruch Even <baruch@ev-en.org>
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Baruch Even wrote:
> I have no clue *why* it happens, but a hint on when it happens. If I 
> remove the ixgb driver from my .config, performance is back to normal. 
> Note though that I don't even use the ixgb driver for my tests, it's 
> just sitting idle on the machine and connected to nothing (the cisco 
> router is turned off to reduce noise polution).

Check your interrupts - it's probably sending out a large number
of interrupts which are clogging the system..

thanks,
Nivedita