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Date:      Fri, 09 Jul 2004 12:19:09 -0500
From:      Jon Noack <noackjr@alumni.rice.edu>
To:        John Baldwin <jhb@FreeBSD.org>
Cc:        freebsd-current@FreeBSD.org
Subject:   Re: Native preemption is the culprit [was Re: today's CURRENT lockups]
Message-ID:  <40EED38D.9010903@alumni.rice.edu>
In-Reply-To: <200407091315.16899.jhb@FreeBSD.org>
References:  <20040705184940.GA2651@tybalt.greiner.local> <200407081317.53981.jhb@FreeBSD.org> <20040709111955.2901ce5b.taku@tackymt.homeip.net> <200407091315.16899.jhb@FreeBSD.org>

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On 07/09/04 12:15, John Baldwin wrote:
> My test machine is not a true SMP machine either, just HTT.  It has been 
> running a -j 256 worldloop overnight with no problems, so I committed a 
> slightly modified version of the patch yesterday.

Did you test with a UP kernel?  After your latest commit I have been 
experiencing regular hard locks on my pre-HTT P4 machine.  Backing out 
rev. 1.114 of sched_ule.c fixes it.  See my previous message (Re: 
FreeBSD keeps hanging......):
http://docs.freebsd.org/cgi/mid.cgi?40EECC49.3070501

Jon



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