On Tue, Jan 14, 2014 at 04:39:54PM +, Morten Rasmussen wrote:
> Responsiveness is still very important. It is quite hard to control. CFS
> doesn't consider latency. The only way to get the best responsiveness is
> to go for best performance which comes at a high cost in energy.
The big
On Mon, Jan 13, 2014 at 09:07:12PM +, Rafael J. Wysocki wrote:
> On Tuesday, January 07, 2014 04:19:39 PM Morten Rasmussen wrote:
> > To minimize energy it may sometimes be better to put waking tasks on
> > partially loaded cpus instead of powering up more cpus (particularly if
> > it implies
On Mon, Jan 13, 2014 at 10:07:12PM +0100, Rafael J. Wysocki wrote:
> > Currently, the CFS scheduler has no knowledge about frequency scaling.
> > Frequency scaling governors generally try to match the frequency to
> > the load, which means that the idle time has no absolute meaning. The
> >
On Mon, Jan 13, 2014 at 10:07:12PM +0100, Rafael J. Wysocki wrote:
Currently, the CFS scheduler has no knowledge about frequency scaling.
Frequency scaling governors generally try to match the frequency to
the load, which means that the idle time has no absolute meaning. The
potential
On Mon, Jan 13, 2014 at 09:07:12PM +, Rafael J. Wysocki wrote:
On Tuesday, January 07, 2014 04:19:39 PM Morten Rasmussen wrote:
To minimize energy it may sometimes be better to put waking tasks on
partially loaded cpus instead of powering up more cpus (particularly if
it implies
On Tue, Jan 14, 2014 at 04:39:54PM +, Morten Rasmussen wrote:
Responsiveness is still very important. It is quite hard to control. CFS
doesn't consider latency. The only way to get the best responsiveness is
to go for best performance which comes at a high cost in energy.
The big problem
On Tuesday, January 07, 2014 04:19:39 PM Morten Rasmussen wrote:
> To minimize energy it may sometimes be better to put waking tasks on
> partially loaded cpus instead of powering up more cpus (particularly if
> it implies powering up a new cluster/group of cpus with associated
> caches). To make
On Tuesday, January 07, 2014 04:19:39 PM Morten Rasmussen wrote:
To minimize energy it may sometimes be better to put waking tasks on
partially loaded cpus instead of powering up more cpus (particularly if
it implies powering up a new cluster/group of cpus with associated
caches). To make that
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