On Mon, 5 Apr 2010, Arjan van de Ven wrote:
On 4/5/2010 8:14, Paul E. McKenney wrote:So the main issue is that for many workloads, it is best to run full
and get done quickly, thus allowing the entire machine to be powered
Race To Idle works extremely well in a batch type situation where there
is not going to be any work to do after you finish what you have.
It doesn't work quite as well if you are going to have new work to do in
the near future.
You cannot power down the entire machine if you have to look for user
It takes time (and power) to shut down and start back up, if you are
going to have more work to do before you can make the complete cycle
(and save more power than it costs to make the transitions), it's best
to stay at full power, even if you are idle.