Messages in this thread |  | | | Date | Sun, 2 Sep 2007 09:46:22 +0200 | | From | Andi Kleen <> | | Subject | Re: [PATCH] Track accurate idle time with tick_sched.idle_sleeptime |
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> 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.
Also doing two instead of one can have an impact even on C2+, especially when the operation can be thousands of cycles.
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