Date: Sun, 30 Apr 2000 12:29:43 +0200 From: Dave Boers <djb@ifa.au.dk> To: Steve Passe <smp@csn.net> Cc: smp@FreeBSD.ORG Subject: Re: hlt instructions and temperature issues Message-ID: <20000430122943.A52481@relativity.student.utwente.nl> In-Reply-To: <200004300350.VAA13194@Ilsa.StevesCafe.com>; from smp@csn.net on Sat, Apr 29, 2000 at 09:50:47PM -0600 References: <200004300350.VAA13194@Ilsa.StevesCafe.com>
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On Sat, Apr 29, 2000 at 09:50:47PM -0600, Steve Passe wrote: > > In <200004291445.IAA09070@Ilsa.StevesCafe.com> Steve Passe <smp@csn.net> wrote: > > > Did you use the version that had the explicit instruction between the sti > > > and hlt: > > > I would like to repeat your experiment. > > > Yes, I used Luoqi Chen's original patch, no modifications. > > This is very weird, my times improved with the hlt instruction in place: > http://people.FreeBSD.org/~fsmp/SMP/hltbenches.html That agrees with my experience. Seems to have only bright sides, that hlt instruction ;-) With the apic instruction between sti and hlt I did notice a few stray irq 7's in my logfiles, however. I will now go do a different kind of testing (one I usually use to test new memory DIMM's: large matrix inversion in double precision). I will do some benchmarking with and without the hlt instruction. You'll all hear from me shortly. Regards, Dave. -- djb@ifa.au.dk d.j.boers@tn.utwente.nl PGP key: ftp://relativity.student.utwente.nl:/pub/pgpkeys/djb.asc To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-smp" in the body of the message
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