netdev - Re: NIU - Sun Neptune 10g - Transmit timed out reset (2.6.24)

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Message-Id: <20080509.154538.28321777.davem@davemloft.net>
Date:	Fri, 09 May 2008 15:45:38 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	Matheos.Worku@....COM
Cc:	jesper@...gh.cc, yhlu.kernel@...il.com,
	linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: NIU - Sun Neptune 10g - Transmit timed out reset (2.6.24)

From: Matheos Worku <Matheos.Worku@....COM>
Date: Fri, 09 May 2008 15:36:17 -0700

> I have observed TX throughput degradation (and increased CPU 
> utilization)  occurs with increased # of connections, when CPU count > 4 
> CPUs.  I don't think it is related to the driver (or HW).

All transmits through a device are fully serialized currently,
it's a known problem and something we plan to fix.
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