i386/103435: Kernel appears somewhat deadlocked during heavy ATA I/O (post-August 4th)

[Rich Wales]

The following reply was made to PR i386/103435; it has been noted by GNATS.

From: Rich Wales <richw at richw.org>
To: bug-followup at FreeBSD.org
Cc: freebsd at jdc.parodius.com
Subject: Re: i386/103435: Kernel appears somewhat deadlocked during heavy
 ATA I/O (post-August 4th)
Date: Sun, 01 Oct 2006 22:01:50 -0700

 Following up on my earlier comments:
 
 I seem to be able to reproduce the problem reliably by running two
 concurrent "dd" commands (copying data from each of my two SATA
 drives to /dev/null simultaneously), and waiting a few minutes.
 
 Reading off just one of the drives wasn't enough to generate any
 timeout warnings, but reading from both at the same time apparently
 did the trick.
 
 Rich Wales            richw at richw.org            http://www.richw.org