Date: Sun, 27 Apr 2003 19:35:39 +0100 From: Peter Wood <peter@alastria.net> To: freebsd-smp@freebsd.org Subject: machdep.cpu_idle_hlt on a Dual AMD 2000+ MP Message-ID: <af8oav4h43rd549afuusneuo6qle7vjrnm@4ax.com>
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Afternoon, I was reading all the threads regarding hyperthreading, and descovered = that machdep.cpu_idle_hlt is set to 0 by default on SMP machines and 1 on uniprocessor machines. I've change it to 1 on my dual machine, and so far it appears stable. I = have noticed that the CPU tempratures appear to be lower now, possibly a coincidence as the servers load may have been changing. Should I expect = it to be lower? Also should I expect to see any performance loss, or instability? Does = anyone know the original reason for setting the defaults this way? Just curious, Have a good one, Peter. --=20 Peter Wood <peter@alastria.net> :: Tel +44 7974 799440
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