Date: Thu, 1 Feb 2007 14:58:15 -0800
From: Stephen Hemminger <shemminger@linux-foundation.org>
To: "Fagyal Csongor" <concept@conceptonline.hu>
Cc: <thomas@glanzmann.de>, <linux-kernel@vger.kernel.org>,
       <netdev@vger.kernel.org>
Subject: Re: sky2 hangs
Message-ID: <20070201145815.199bfe1a@freekitty>
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References: <20070201185532.GL13130@cip.informatik.uni-erlangen.de>
	<42007.80.98.159.250.1170369983.squirrel@www.hunhost.com>
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I can reproduce the problem now (on mac mini). Interestingly it seems to whack
the whole ethernet switch when it happens.
> 
> - a previously suggested fix - passing idle=poll to the kernel - did not
> work for me at the end

It is not an MSI or IRQ problem. It is a phy problem (see below).

> - the locks I have happen very periodically (somewhere around every 22-28
> hours), as if the chip would die after a given amount of data transferred;
> I know this looks stupid but I thought I might mention it
> - I have about 1Mbit/s of (incoming) traffic on this interface: with
> short, very high peaks, as there is a MySQL server on the other end,
> receiving about 100 queries per second
> - unloading the sky2 module totally freezes the computer for me

If you do:
	ethtool -r eth0
it cause a PHY reset (renegotiation) and clears the problem.


-- 
Stephen Hemminger <shemminger@linux-foundation.org>
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