cat /proc/acpi/processor/CPU0/*
processor id:            0
acpi id:                 0
bus mastering control:   no
power management:        yes
throttling control:      yes
limit interface:         yes
active limit:            P0:T0
user limit:              P0:T0
thermal limit:           P0:T0
active state:            C1
max_cstate:              C8
bus master activity:     001fffff
states:
   *C1:                  type[C1] promotion[C2] demotion[--] latency[000] usage[00681799] duration[00000000000000000000]
    C2:                  type[C2] promotion[--] demotion[C1] latency[010] usage[81633035] duration[00000000690729622211]
state count:             8
active state:            T0
states:
   *T0:                  00%
    T1:                  12%
    T2:                  25%
    T3:                  37%
    T4:                  50%
    T5:                  62%
    T6:                  75%
    T7:                  87%