Constant watchdog timeouts on em0 with today's -CURRENT

[Joe Marcus Clarke]

On Thu, 2006-11-23 at 00:35 -0700, Scott Long wrote:
> Joe Marcus Clarke wrote:
> > I just synced with today's -CURRENT, and rendered by port build machine
> > useless.  With minimal network traffic (just logging in via SSH with a
> > TCP NFS-mounted home) I get an immediate watchdog timeout on em0, and
> > they just keep coming as I type in the session.  The machine is
> > otherwise idle while this is occurring.
> > 
> > I am currently running:
> > 
> > FreeBSD fugu.marcuscom.com 7.0-CURRENT FreeBSD 7.0-CURRENT #83: Thu Nov
> > 23 01:51:05 EST 2006
> > root at fugu.marcuscom.com:/space2/obj/usr/src/sys/FUGU  i386
> > 
> > I was running:
> > 
> > FreeBSD 7.0-CURRENT #80: Fri Nov 10 15:53:48 EST 2006
> >     marcus at fugu.marcuscom.com:/space2/obj/usr/src/sys/FUGU
> > 
> > Which provided stable networking.  Here are my verbose dmesg and kernel
> > config.  Note: this machine has both am if_em and an mpt card.  Could
> > the recent MSI changes have exacerbated the em watchdog problem?  What
> > can I do (besides downgrade) to resolve this?  Thanks.
> > 
> > http://www.marcuscom.com/downloads/fugu_dmesg.txt
> > http://www.marcuscom.com/downloads/fugu_kernel.txt
> > 
> > Joe
> 
> Have you followed the instructions in src/UPDATING on how to turn MSI
> off?

Man, do I feel stupid.  I completely overlooked UPDATING.  Indeed,
disabling MSI restores network stability.  Thanks, Scott.

Joe

-- 
Joe Marcus Clarke
FreeBSD GNOME Team      ::      gnome at FreeBSD.org
FreeNode / #freebsd-gnome
http://www.FreeBSD.org/gnome
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