Messages in this thread | | | Date | Wed, 23 Dec 2009 10:52:39 +0100 | From | Pavel Machek <> | Subject | Re: RFC: A proposal for power capping through forced idle in the Linux Kernel |
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Hi!
> > OTOH realtime people already have tools you could make good use of: > > your power capping approach looks like 'high priority idle task that > > needs to run for 2 seconds every 5 seconds' or something... > > > > Talk to rt people? > > At the core of it, you are correct. However, in our implementation it > also avoids running when the system is already idle and operates at > much finer granularities than seconds.
Seconds were examples, I suspect rt kernels need lower granularities, to.
> Which specific tools are you referring to? Real-time Linux as a whole > is a trade off: one gets predictable latency in exchange for some > performance. Any specific contacts that I should direct my inquiries > to?
I guess Peter and Ingo (added to the Cc)....
Anyway, I guess that what you really want is to be able to change priority of the idle threads, even making them realtime... Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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