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From: Nivedita Singhvi <niv@us.ibm.com>
To: Baruch Even <baruch@ev-en.org>
Cc: netdev@oss.sgi.com, "David S. Miller" <davem@davemloft.net>,
	Stephen Hemminger <shemminger@osdl.org>
Subject: Re: TCP performance drop 2.6.6->2.6.7
Date: Fri, 15 Apr 2005 08:30:35 -0700	[thread overview]
Message-ID: <425FDE1B.6050804@us.ibm.com> (raw)
In-Reply-To: <425FD1AE.3060301@ev-en.org>

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

      reply	other threads:[~2005-04-15 15:30 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-04-12 22:18 TCP performance drop 2.6.6->2.6.7 Baruch Even
2005-04-12 22:47 ` David S. Miller
2005-04-12 23:07 ` Stephen Hemminger
2005-04-12 23:59   ` Baruch Even
2005-04-13 18:20     ` Stephen Hemminger
2005-04-15 14:37 ` Baruch Even
2005-04-15 15:30   ` Nivedita Singhvi [this message]

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