Constant watchdog timeouts on em0 with today's -CURRENT

[Joe Marcus Clarke]

On Thu, 2006-11-23 at 01:18 -0700, Scott Long wrote:
> Joe Marcus Clarke wrote:
> > 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
> > 
> 
> Btw, could you submit a PR with your system information and assign it to
> John?  I know that he intends to do some form of blacklist or whitelist
> for MSI support, and data like yours is needed for that.

Done: 
http://www.freebsd.org/cgi/query-pr.cgi?pr=105768 .

Thanks again for knocking some sense into me.

Joe

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