On Sun, 13 Nov 2011, Paweł Staszewski wrote: > How can I check if Turbo Boost is working with Xeon E5649 > > I have turbostats that shows: > pk cr CPU %c0 GHz TSC %c1 %c3 %c6 %pc3 %pc6 > 56.12 2.67 2.53 43.88 0.00 0.00 0.00 0.00 ^^^^ It is working. > So 2.67Ghz - but based on Intel spec max Turbo freq. for this cpu is 2.93Ghz You have too many cores active. You'll have to quiesce 4 cores into C6 to get 2.93GHz[1] out of the remaining 2 cores in the package. [1] http://www.intel.de/content/dam/doc/specification-update/xeon-5600-specification-update.pdf -- "One disk to rule them all, One disk to find them. One disk to bring them all and in the darkness grind them. In the Land of Redmond where the shadows lie." -- The Silicon Valley Tarot Henrique Holschuh -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html