Messages in this thread | | | Date | Wed, 26 Jul 2023 12:59:08 +0200 | From | Frederic Weisbecker <> | Subject | Re: Stopping the tick on a fully loaded system |
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Le Tue, Jul 25, 2023 at 04:27:56PM +0200, Rafael J. Wysocki a écrit : > On Tue, Jul 25, 2023 at 3:07 PM Anna-Maria Behnsen > I'll let Frederic respond to the above, but from my perspective it all > just means that the idle governors in use today are not perfect. > > However, they will never be perfect, because they only have a little > time to make a decision, so it's a matter of balancing that with > precision.
So, even without considering Anna-Maria's patchset, sparing the next timer lookup if we already know we won't stop it would show quite a benefit because that lookup involves locking and quite some overhead walking through all levels.
Thanks.
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