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Name:	unknown
Date:	March 20, 2004 at 17:56:46
Subject:	Re: Finding CPU frequency
In Reply To:	Re: Finding CPU frequency by unknown on March 20, 2004 at 15:54:56
Text:	`\| So you wait n seconds and use the TSC to count clocks? If so, then keep \| in mind that this method won't work if the processor in question has a \| TSC which increments at the current core clock frequency, and that core \| clock frequency changes during your measurement interval, e.g. because \| of a SpeedStep-like power management.` `Only if you sleep for n seconds. But if you do some chummy calculations, possibly involving all registers and being not-too-well cachable, it will wake up the dead, not to mention SpeedStep.`

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`Text:`	\|\| So you wait n seconds and use the TSC to count clocks? If so, then keep \|\| in mind that this method won't work if the processor in question has a \|\| TSC which increments at the current core clock frequency, and that core \|\| clock frequency changes during your measurement interval, e.g. because \|\| of a SpeedStep-like power management. \| \| Only if you sleep for n seconds. But if you do some chummy calculations, \| possibly involving all registers and being not-too-well cachable, it will \| wake up the dead, not to mention SpeedStep. \|


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Re: Finding CPU frequency by unknown, 02:59:37 2004/03/21 (0)