head -1000 /proc/acpi/processor/CPU0/*
==> /proc/acpi/processor/CPU0/info <==
processor id:            0
acpi id:                 0
bus mastering control:   yes
power management:        yes
throttling control:      yes
limit interface:         yes

==> /proc/acpi/processor/CPU0/limit <==
active limit:            P0:T0
user limit:              P0:T0
thermal limit:           P0:T0

==> /proc/acpi/processor/CPU0/power <==
active state:            C4
max_cstate:              C8
bus master activity:     00000000
maximum allowed latency: 8000 usec
states:
    C1:                  type[C1] promotion[C2] demotion[--] latency[000] usage[00000010] duration[00000000000000000000]
    C2:                  type[C2] promotion[C3] demotion[C1] latency[001] usage[00032854] duration[00000000000111750346]
    C3:                  type[C3] promotion[C4] demotion[C2] latency[085] usage[00080742] duration[00000000000766368153]
   *C4:                  type[C3] promotion[--] demotion[C3] latency[185] usage[00729070] duration[00000000007031146267]

==> /proc/acpi/processor/CPU0/throttling <==
state count:             8
active state:            T0
states:
   *T0:                  00%
    T1:                  12%
    T2:                  25%
    T3:                  37%
    T4:                  50%
    T5:                  62%
    T6:                  75%
    T7:                  87%