Messages in this thread | | | Date | Sun, 2 Sep 2007 12:02:15 +0200 | From | Ingo Molnar <> | Subject | Re: [PATCH] Track accurate idle time with tick_sched.idle_sleeptime |
| |
* Andi Kleen <andi@firstfloor.org> wrote:
> > at least the current out-of-idle code already does what amounts to a > > PM-timer read when exiting from C2 or C3 mode. The > > C2/C3 are already slow. I more worry about C1.
C2/C3 are only slow in older CPUs - and they are getting faster and faster. (also, newer systems do less of C1, due to increased energy awareness.)
would be nice to measure the overhead/impact i suspect.
Ingo - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |