From owner-freebsd-net@FreeBSD.ORG  Wed Feb 23 11:16:38 2011
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Date: Wed, 23 Feb 2011 06:16:28 -0500
From: Mike Tancsa <mike@sentex.net>
Organization: Sentex Communications
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To: Lev Serebryakov <lev@serebryakov.spb.ru>
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Cc: freebsd-net@freebsd.org, Jack Vogel <jfvogel@gmail.com>,
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	=?UTF-8?B?ZWwgVMO8eGVu?= <Michael.Tuexen@lurchi.franken.de>
Subject: Re: em0 with latest driver hangs again and again (without "Watchdog
 timeout" message!)
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On 2/23/2011 4:16 AM, Lev Serebryakov wrote:
>   Driver from "em driver, 82574L chip, and possibly ASPM" thread
>  doesn't help, really: it seems, that it decrease frequincy of hangs,


Looking at your sysctl output, you are not using the test drivers posted
in that thread.

>>> sysctl dev.em.0
dev.em.0.%desc: Intel(R) PRO/1000 Network Connection 7.1.9
dev.em.0.%driver: em

It should show
dev.em.1.%desc: Intel(R) PRO/1000 Network Connection 7.1.9-test

If you want to try 7.1.9-test, you can download it at
http://www.tancsa.com/if_em-8.c for releng_8.
However, there is a newer one Jack has, 7.2.2 which seems to work for me
as well so far and has additional fixes that the 7.1.9-test

cvsup to RELENG_8, then copy if_em-8.c to /usr/src/sys/dev/e1000/if_em.c


	---Mike