+ date
Sat Oct 21 14:34:50 EST 2006
+ cat /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[00054676] duration[00000000000195316786]
    C3:                  type[C3] promotion[C4] demotion[C2] latency[085] usage[00143317] duration[00000000001266086436]
   *C4:                  type[C3] promotion[--] demotion[C3] latency[185] usage[01162265] duration[00000000010952760338]
+ echo

+ sleep 10
+ date
Sat Oct 21 14:35:00 EST 2006
+ cat /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[00054752] duration[00000000000195348445]
    C3:                  type[C3] promotion[C4] demotion[C2] latency[085] usage[00143603] duration[00000000001268965663]
   *C4:                  type[C3] promotion[--] demotion[C3] latency[185] usage[01165308] duration[00000000010983095356]