Re: [PATCH] dynamic tick patch

[Stephen Frost]

* Benjamin Herrenschmidt (benh@xxxxxxxxxxxxxxxxxxx) wrote:
> Hrm... reading more of the patch & Martin's previous work, I'm not sure
> I like the idea too much in the end... The main problem is that you are
> just "replaying" the ticks afterward, which I see as a problem for
> things like sched_clock() which returns the real current time, no ?
> 
> I'll toy a bit with my own implementation directly using Martin's work
> and see what kind of improvement I really get on ppc laptops.

I don't know if this is the same thing, or the same issue, but I've
noticed on my Windows machines that the longer my laptop sleeps the
longer it takes for it to wake back up- my guess is that it's doing
exactly this (replaying ticks).  It *really* sucks though because it can
take quite a while for it to come back if it's been asleep for a while.

	Stephen

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