Messages in this thread | | | Subject | Re: [RFC][PATCH] Runtime switching of the idle function [take 2] | From | Steven Rostedt <> | Date | Tue, 29 Nov 2005 10:42:34 -0500 |
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On Tue, 2005-11-29 at 15:50 +0100, Andi Kleen wrote: > On Tue, Nov 29, 2005 at 09:19:31AM -0500, Steven Rostedt wrote: > > > And in practice the CPU will run so hot that only benchmarkers like it. > > > > Why would it run hot? What's the difference between polling and doing > > other things. How many transistors does it take to poll? > > It will prevent the CPU from going into sleep states and essentially > keep most of it enabled.
Well, there's one thing that my patch _does_ help with. (And it has just helped me now). If you boot up with idle=poll and forget about it, you can check what idle routine is being used and switch out of poll without rebooting. (like I'm doing right now :-)
-- Steve
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