Hi,
The default "stop" action for the cpupower service seems to be to set the ondemand governor, but this fails. I can reproduce the issue directly by running cpupower:
$ sudo cpupower frequency-set -g ondemand Setting cpu: 0 Error setting new values. Common errors: - Do you have proper administration rights? (super-user?) - Is the governor you requested available and modprobed? - Trying to set an invalid policy? - Trying to set a specific frequency, but userspace governor is not available, for example because of hardware which cannot be set to a specific frequency or because the userspace governor isn't loaded?
The ondemand and powersave governors work ok (powersave is the default when the host boots).
Some diagnosis:
$ grep ONDEMAND /boot/config-3.10.0-123.el7.x86_64 CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y CONFIG_CPU_FREQ_GOV_ONDEMAND=y $ cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_governors performance powersave
So apparently the kernel is configured to support ondemand, but it is not available. I know that the hardware and BIOS are capable of it--in fact, I just rebuilt the host on centos 6.5 to verify, and ondemand works fine. Also, I don't know a reason why powersave would work but ondemand would not, hardware-wise.
CPU: Intel E5-2670 System: SGI C1110-RP6
I'd appreciate any tips. I don't know if I've found a bug or if I'm doing something wrong.
Thanks, Corey