Xen cpufreq control
Posted: Sat Apr 06, 2013 11:14 pm
I have not been able to get cpu power management under Xen to work yet. Before Xen was installed cpufreq worked fine in LM 13.
Found some info about the topic at: http://wiki.xen.org/wiki/Xen_power_management
And details on teh xenpm at: http://wiki.xen.org/wiki/Xenpm_command
I tried:
and got nothing back. Tried will a cpu number at end and still got nothing back
Then tried:
and it returned the following
Next
returnes info on max c-state (C7) and info on each cpu
Last:
returns a failure
Any ideas? It doesnt apear that the governor or anything is set in grub, so default should be xen control with userspace control. But I cant change.
Found some info about the topic at: http://wiki.xen.org/wiki/Xen_power_management
And details on teh xenpm at: http://wiki.xen.org/wiki/Xenpm_command
I tried:
Code: Select all
xenpm get-cpufreq-states
Then tried:
Code: Select all
xenpm get-cpufreq-para
Code: Select all
[CPU0] failed to get cpufreq parameter
[CPU1] failed to get cpufreq parameter
[CPU2] failed to get cpufreq parameter
[CPU3] failed to get cpufreq parameter
[CPU4] failed to get cpufreq parameter
[CPU5] failed to get cpufreq parameter
[CPU6] failed to get cpufreq parameter
[CPU7] failed to get cpufreq parameter
Code: Select all
xenpm get-cpuidle-states
Last:
Code: Select all
xenpm set-scaling-governor ondemand
Code: Select all
[CPU0] failed to set governor name
[CPU1] failed to set governor name
[CPU2] failed to set governor name
[CPU3] failed to set governor name
[CPU4] failed to set governor name
[CPU5] failed to set governor name
[CPU6] failed to set governor name
[CPU7] failed to set governor name