From owner-freebsd-smp  Mon Mar 27  9: 0:14 2000
Delivered-To: freebsd-smp@freebsd.org
Received: from sharmas.dhs.org (c62443-a.frmt1.sfba.home.com [24.0.69.165])
	by hub.freebsd.org (Postfix) with ESMTP id CB5A837B863
	for <freebsd-smp@freebsd.org>; Mon, 27 Mar 2000 09:00:10 -0800 (PST)
	(envelope-from adsharma@sharmas.dhs.org)
Received: (from adsharma@localhost)
	by sharmas.dhs.org (8.9.3/8.9.3) id IAA15723;
	Mon, 27 Mar 2000 08:59:52 -0800
Date: Mon, 27 Mar 2000 08:59:52 -0800
From: Arun Sharma <adsharma@sharmas.dhs.org>
Message-Id: <200003271659.IAA15723@sharmas.dhs.org>
To: djb@wit389306.student.utwente.nl
Cc: freebsd-smp@freebsd.org
Subject: Re: SMP and vn
In-Reply-To: <20000326153003.A413@relativity.student.utwente.nl>
References: <38CFF347.865CFD63@ixori.demon.nl> <20000326153003.A413@relativity.student.utwente.nl>
Reply-To: adsharma@sharmas.dhs.org
Sender: owner-freebsd-smp@FreeBSD.ORG
Precedence: bulk
X-Loop: FreeBSD.org

> Right now I am running with a reduced kernel. I deleted the pcm and ata
> drivers (system is now running off scsi only - Tekram 390U2W) and I also
> alltogether removed softupdates from the kernel as well as anything else
> that wasn't absolutely necessary. 
> 
> In about 5-10 days I'll know wether this has helped. 
> 
> If anyone has any further insights into this huge problem, I'd love to hear
> about it! 

I'm pretty convinced that this hang is related to the disk subsystem. I
had two hangs in the last week during heavy compilations and when the hang
happened, the orange LED on my disk was on. Everything else was frozen.

I could reproduce the hang *once* by running:

# dd if=/dev/ad4s1 of=/dev/null &
# dd if=/dev/ad4s1 of=/dev/null &
# while true; do ls done;

But not anymore :(

Can anyone tell me, exactly what events cause the disk LEDs to go on
and off ?

	-Arun


To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-smp" in the body of the message