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Date: Wed, 13 Oct 2004 23:50:26 GMT
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To: freebsd-bugs@FreeBSD.org
From: Kris Kennaway <kris@obsecurity.org>
Subject: Re: kern/72293: de(4) NIC performance degradation with
	debug.mpsafenet=1
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The following reply was made to PR kern/72293; it has been noted by GNATS.

From: Kris Kennaway <kris@obsecurity.org>
To: Philip Murray <pmurray@nevada.net.nz>
Cc: FreeBSD-gnats-submit@FreeBSD.org
Subject: Re: kern/72293: de(4) NIC performance degradation with debug.mpsafenet=1
Date: Wed, 13 Oct 2004 16:44:09 -0700

 On Mon, Oct 04, 2004 at 05:43:18PM +1300, Philip Murray wrote:
 
 > >Description:
 >     After booting the interface will work for a short time, as traffic passes through it, it suddenly gets very slow and unuseable.
 >     Unable to SSH over 100Mbit to it and doesn't respond to pings.
 > 
 >     Booting with debug.mpsafenet=0 in /boot/loader.conf resolves it.
 > >How-To-Repeat:
 >     Boot with debug.mpsafenet=1 with a de(4) NIC
 > 
 > >Fix:
 > 
 >     Boot with debug.mpsafenet=0
 
 FYI, the de driver indeed has locking problems - this will hopefully be addressed by 5.3.
 
 Kris