Srivatsa Vaddagiri wrote:
Hmm ..I guess we could restrict the max time a idle CPU will sleep taking
into account its balance interval. But whatever heuristics we follow to
maximize balance_interval of about-to-sleep idle CPU, don't we still run the
risk of idle cpu being woken up and going immediately back to sleep (because
there was no imbalance)?
Yep.
Moreover we may be greatly reducing the amount of time a CPU is allowed to
sleep this way ...
Yes. I was assuming you get some kind of fairly rapidly diminishing
efficiency return curve based on your maximum sleep time. If that is
not so, then I agree this wouldn't be the best method.
--
SUSE Labs, Novell Inc.
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