* Andi Kleen <[email protected]> [050505 05:21]:
> On Thu, May 05, 2005 at 01:33:33AM -0400, Brown, Len wrote:
> > Re: no idle tick
> >
> > Idle power savings does not by itself justify HZ=0.
> > We'll get the same idle power consumption with HZ=1.
>
>
> Power consumption is not the only reason for no tick in idle.
> The other big one is virtualization. If you have lots
> of virtual machines running on a hypervisor you really
> dont want them to wake up regularly even when idle.
Yes, and although this is x86/x86_64 thread, I'd like to point out
that embedded systems can benefit from skipping ticks for several
seconds at a time.
There's no need for ticks on embedded systems until some event,
such as an interrupt happens.
Cheers,
Tony
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