What are you asking for? 1) Forcing CPUs to run at the max performance? 2) Forcing some CPUs to run at a lower frequency to allow other CPUs to run at the highest turbo bin (to game benchmarks which only run on a sub-set of all CPUs)? If not these, then what is it?
If you want to do #2, then placing the "extra" CPUs in the offline state will product the highest turbo mode in the remaining CPUs running the benchmark. Regards, Bill ----- Original Message ----- From: [email protected] To: [email protected] Sent: Saturday, February 19, 2011 2:10:37 PM GMT -08:00 US/Canada Pacific Subject: [pm-discuss] How to change CPU frequency on Solaris? We run performance tests on a Westmere system which has 16 CPUs. SpeedStep and Turbo Mode are enabled in BIOS, so each CPU can use a frequency within the "stock" range (1600 MHz - 2934 MHz) and above (because of Turbo Mode). On Linux (RHEL and OL) we can use a standard utility "cpufreq-selector" to set a fixed CPU frequency: [root@gabor nikm]# /usr/sbin/cpufreq-selector -c 0 -f 2261000 ... [root@gabor nikm]# /usr/sbin/cpufreq-selector -c 15 -f 2261000 Is there a way to change the CPU frequency on Solaris? Thanks. Nik -- This message posted from opensolaris.org _______________________________________________ pm-discuss mailing list [email protected] http://mail.opensolaris.org/mailman/listinfo/pm-discuss _______________________________________________ pm-discuss mailing list [email protected] http://mail.opensolaris.org/mailman/listinfo/pm-discuss
