On Tue, Dec 23, 2014 at 12:20, Marinos Yannikos wrote: > Hi, > > I believe that hw.setperf (as well as programs using it, such as apmd > -C) change the CPU frequency of only single (arbitrary) cores, leading > to higher temperatures than necessary for idle systems. It would be > desirable if all cores were affected. > (correct me if I'm wrong!) > > It doesn't seem to be easy to hack this into e.g. > arch/amd64/amd64/est.c since there's no way to set a CPU affinity mask > (only a P_CPUPEG for the scheduler, which is probably of limited use in > this case). Can anyone who knows the kernel code well comment / suggest > a course of action? A user-space implementation seems out of the > question too with no user-facing methods available to set CPU affinity. >
No, it should affect all cores.
