netdev - Re: [Cbe-oss-dev] [PATCH] ps3: gigabit ethernet driver for PS3, take3

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Date:	Fri, 6 Jul 2007 13:02:41 -0500
From:	linas@...tin.ibm.com (Linas Vepstas)
To:	Masakazu Mokuno <mokuno@...sony.co.jp>
Cc:	Geoff Levand <geoffrey.levand@...sony.com>, netdev@...r.kernel.org,
	cbe-oss-dev@...abs.org, Jeff Garzik <jeff@...zik.org>
Subject: Re: [Cbe-oss-dev] [PATCH] ps3: gigabit ethernet driver for PS3, take3

On Thu, Jul 05, 2007 at 11:47:20AM -0500, jschopp wrote:
> 
> This is the third submission of the network driver for PS3.
> The differences from the previous one are:

I notice that this mostly a cut-n-paste of a very old version
of the spidernet device driver.  Please note that the old
spidernet had absolutely disasterous performance for transmit;
it also had a variety of crazy hangs and lockups under 
high-stress conditions; or NFS operation, or certain back-to-back
tcp usage scenarios. A few dozen bugfixes went in since
the time that the gelic snapshot was taken.

Wouldn't it be better to just add the hypervisor bits-n-pieces 
to spidernet?  That way, you get not only the various fixes, but 
also the benefit of fairly regular testing...

--linas
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