Rafael J. Wysocki 0843e83c1a cpufreq: intel_pstate: Proportional algorithm for Atom
The PID algorithm used by the intel_pstate driver tends to drive
performance to the minimum for workloads with utilization below the
setpoint, which is undesirable, so replace it with a modified
"proportional" algorithm on Atom.

The new algorithm will set the new P-state to be 1.25 times the
available maximum times the (frequency-invariant) utilization during
the previous sampling period except when the target P-state computed
this way is lower than the average P-state during the previous
sampling period.  In the latter case, it will increase the target by
50% of the difference between it and the average P-state to prevent
performance from dropping down too fast in some cases.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Tested-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
2016-10-12 20:58:13 +02:00
..
2016-08-01 18:36:01 -04:00
2016-09-03 08:27:37 +10:00
2016-07-30 21:01:36 -07:00
2016-08-26 17:39:35 -07:00
2016-09-03 11:38:43 -07:00
2016-07-30 21:01:36 -07:00
2016-08-04 09:59:37 -04:00
2016-08-02 17:05:11 -04:00
2016-08-01 18:36:01 -04:00
2016-09-03 11:38:43 -07:00
2016-07-20 23:39:36 -07:00
2016-09-03 11:38:43 -07:00
2016-08-12 14:59:10 +05:30
2016-08-06 00:01:33 -04:00
2016-08-06 00:01:33 -04:00
2016-08-05 09:48:22 -04:00
2016-08-01 18:36:01 -04:00
2016-08-01 18:37:45 -04:00
2016-08-02 19:35:40 -04:00
2016-08-06 09:20:13 -04:00