Jitendra.Sasmal at Sun.COM wrote: > Li, Aubrey wrote: >> Hi Jitendra >> >>> Hi Aubrey, >>> >>>> So I assume the following command line give you nothing, right? >>>> # dtrace -l | grep cpu_change_speed >>>> >>> Yes, I don't see anything.See below: >>> bash-3.2# dtrace -l|grep cpu_change_speed >>> bash-3.2# >>> >>> >> Can you post the output of this command on your machine? >> >> # kstat -i 0 -m cpu_info | grep supported_frequencies_Hz >> > bash-3.2# kstat -i 0 -m cpu_info | grep supported_frequencies_Hz > supported_frequencies_Hz 1000000000 >
OK, that's the root cause. Thanks to report this issue. Your system doesn't support speed transition. cpudrv_power() return with DDI_FAILURE before the DTRACE probe. I'll try to make powerTOP cover this case soon. Thanks, -Aubrey
