Messages in this thread | | | Subject | Re: [PATCH v3 00/18] periodic write-back timer optimization | From | Andi Kleen <> | Date | Thu, 09 Jul 2009 14:37:57 +0200 |
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Artem Bityutskiy <Artem.Bityutskiy@nokia.com> writes:
> > The patches attempt to optimize the periodic write-back and stop it when > there are no dirty data. IOW, we do not want the thread to wake up every > 5 seconds (by default), find there is nothing to do, and so on.
Is waking up every 5 seconds really a problem?
The normal rule of thumb is iirc that longer sleep times than a few hundred ms give dimishing returns in terms of power saving.
A simple way might be simple to batch the timer better with other timers.
-Andi
-- ak@linux.intel.com -- Speaking for myself only.
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