>-----Original Message----- >From: [EMAIL PROTECTED] >[mailto:[EMAIL PROTECTED] On Behalf Of Martin Wilck >Sent: Tuesday, February 26, 2008 5:56 AM >To: [email protected] >Subject: Re: [Discuss] SPECpower Linux vs. Windows > >Pallipadi, Venkatesh wrote: > >> We have seen sched_mc_power_savings mentioned above help SPECpower. >> Another _hack_ that seems to help the benchmark is to increase the >> ondemand sampling rate at >> /sys/devices/system/cpu/cpu0/cpufreq/ondemand/sampling_rate. You may >> have to try different values upto max to get best number. > >Thanks. Is there a similar setting for the cpuidle governor? >
No. There are no tunables for idle governor at present. One thing you can try is to limit the max_cstate at boot time, with boot option processor.max_cstate=1 and use only C1. How many C-states are supported on this processor? Dmesg or /proc/acpi/processor/*/power should have that info. Thanks, Venki _______________________________________________ Discuss mailing list [email protected] http://mail.lesswatts.org/mailman/listinfo/discuss
