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Plugin for tuning CPU options. Powersaving, governor, required latency, etc.
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t j d ƒ d S( Ni t x86_energy_perf_policys -rt no_errorsi sg unable to run x86_energy_perf_policy tool, ignoring CPU energy performance bias, is the tool installed?sX your CPU doesn't support MSR_IA32_ENERGY_PERF_BIAS, ignoring CPU energy performance bias( R R R t executet errnot ENOENTR t logt warning( R t retcode_unsupportedt retcode( ( s< /usr/lib/python2.7/site-packages/tuned/plugins/plugin_cpu.pyt _check_energy_perf_bias= s + c C s2 t j j d ƒ | _ | j r. t j d ƒ n d S( Ns$ /sys/devices/system/cpu/intel_pstates intel_pstate detected( t ost patht existsR
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is_cpu_onlinet replace( R R t sd( ( s< /usr/lib/python2.7/site-packages/tuned/plugins/plugin_cpu.pyt _is_cpu_onlineM s c C s t j j d | ƒ S( Ns3 /sys/devices/system/cpu/%s/cpufreq/scaling_governor( R8 R9 R: ( R R ( ( s< /usr/lib/python2.7/site-packages/tuned/plugins/plugin_cpu.pyt _cpu_has_scaling_governorQ s c C sL | j | ƒ s$ t j d | ƒ t S| j | ƒ sH t j d | ƒ t St S( Ns '%s' is not online, skippings. there is no scaling governor fo '%s', skipping( RB R3 t debugR RC R ( R R ( ( s< /usr/lib/python2.7/site-packages/tuned/plugins/plugin_cpu.pyt _check_cpu_can_change_governorT s c C s! t | _ t | _ t | j j ƒ ƒ d | k rê t | _ y t j t
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