Messages in this thread | | | Date | Wed, 11 May 2005 11:12:15 -0700 | From | Tony Lindgren <> | Subject | Re: [RFC][PATCH] i386 x86-64 Eliminate Local APIC timer interrupt |
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* Andi Kleen <ak@suse.de> [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,
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