Hello, You have to enable userspace governor in your kernel then you can scale the CPU frequency by setting /sys/devices/system/cpu/cpu*/cpufreq/scaling_setspeed file. It should work.
Regards. Yahia 2015-04-15 4:00 GMT+02:00 Nimish Girdhar <[email protected]>: > Hello all, > > I am working on a project where I have to use DVFS to change the frequency > of cores based on my evaluation of some counters that I inserted in the > gem5 o3 cpu src code. > > I followed the guidelines given on > http://www.m5sim.org/Running_gem5#Experimenting_with_DVFS . > But with these steps, the kernel will be the one who decides the > performance levels of the cores at different point of time. But in my case > I want to decide the levels based on some counters as mentioned above. > > Has anybody tried anything similar to that? I want to know how can I > access and update the dvfs handler registers from within the cpu src code. > > Any help will be appreciated. > > Thanks, > > -- > Warm regards > Nimish Girdhar > Department of Electrical and Computer Engineering > Texas A&M University > > _______________________________________________ > gem5-users mailing list > [email protected] > http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users >
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