Date: Fri, 9 Jul 2004 10:25:11 -0700 From: Steve Kargl <sgk@troutmask.apl.washington.edu> To: Jon Noack <noackjr@alumni.rice.edu> Cc: freebsd-current@freebsd.org Subject: Re: Native preemption is the culprit [was Re: today's CURRENT lockups] Message-ID: <20040709172511.GA10540@troutmask.apl.washington.edu> In-Reply-To: <40EED38D.9010903@alumni.rice.edu> References: <20040705184940.GA2651@tybalt.greiner.local> <200407081317.53981.jhb@FreeBSD.org> <20040709111955.2901ce5b.taku@tackymt.homeip.net> <200407091315.16899.jhb@FreeBSD.org> <40EED38D.9010903@alumni.rice.edu>
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On Fri, Jul 09, 2004 at 12:19:09PM -0500, Jon Noack wrote: > 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 I've tested it on a UP kernel (HTT enabled, ACPI disabled, APIC enabled, ULE). Appears to work fine. -- Steve
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