On Sat, Jun 19, 2010 at 16:24, Rahul Nabar <rpna...@gmail.com> wrote: > On Fri, Jun 18, 2010 at 7:27 AM, Douglas Guptill <douglas.gupt...@dal.ca> > wrote: >> On Fri, Jun 18, 2010 at 12:30:12PM +0100, Hearns, John wrote: >>> Does anyone know much about Turboboost on Nehalem? >>> I would like to have some indication that this is working, and perhaps >>> measure what effect it has. >>> I have enabled Turboboost in the BIOS, however when I modprobe >>> acpi_cpufreq I get > > What's a good way to confirm if my procs are actually in a turbo > state at a given point of time. It doesn't get reported back through > the usual BIOS channels does it?
turbostat from pmtools is a great little tool for seeing this type of info. http://kernel.org/pub/linux/kernel/people/lenb/acpi/utils/ FWIW acpi_cpufreq doesn't load on any of our Nehalem based systems (HP, Dell, running on Fedora 12) - but turbo boost and all the other power efficiency features work fine as far as I can tell. _______________________________________________ Beowulf mailing list, Beowulf@beowulf.org sponsored by Penguin Computing To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
