k315rc5doug1_r2: CPU Frequency Verses load experiment: Powersave mode after a fresh boot.
The intel_pstate code includes Dirk's (private, not public) 7 patches, but patch 3 of 7 (reporting frequency method) has been reverted.
Overview:
Detail A - Start of Experiment:
Detail B - End of Experiment:
. Note this goes to 3.8 Giga Hertz, as expected. (Doug check: Does it get to the highest pstate? it looks only close to me.)
. The CPU frequency is calm and low at the start of the experiment, as shown in detail A.
. at the start of the experiment, the relatively high threshold for C0 time sometimes forces the CPU frequency too low.
. The CPU frequency settles fast to a calm and low value at the end of the experiment as shown in detail B.
References:
Doug's (3.15RC5) intel_pstate.c 1.
Script used to ramp cpu load.
Script used to ramp cpu sleep / load frequency.
Program used to create load ramp script.
Program used to create sleep / load frequency script.
Consume Program.
CPU frequency monitoring program (CPU 7).