[ltp] Time spent in C3 cpu state ?

Florian Reitmeir linux-thinkpad@linux-thinkpad.org
Tue, 9 Aug 2005 19:46:25 +0200


On Mon, 08 Aug 2005, Damien Challet wrote:

> Just wondering, what is the fraction of the time your thinkpad spends in C3 
> cpu state ?
> My own stats: 
> T41 2373-GEG: 50%, x21 and 600E with PIII@450MHz: 85% 
> Is there any way to improve the usage of C3 ?

normally this is heavy depends on the kernel and loaded modules, i get here

T42: 2373-N3G
    C1:                  type[C1] promotion[C2] demotion[--] latency[001] usage[00000000]
   *C2:                  type[C2] promotion[C3] demotion[C1] latency[001] usage[05917314]
    C3:                  type[C3] promotion[C4] demotion[C2] latency[085] usage[00084962]
    C4:                  type[C3] promotion[--] demotion[C3] latency[185] usage[00449434]

and my uptime,
	19:17:11 up 12 days, 19:18,  5 users,  load average: 0.06, 0.05, 0.01
using a kernel
	2.6.12.2
	applied the dynamic-tick patch

-- 
Florian Reitmeir
http://net.multi24.com/