Hi PowerTop developers,
I've been testing PowerTop on various OS and platforms, and found on some platforms or
OS, Powertop show only "idle 100%"s in the frequency page, no other frequencies
and their percentage.
For example, currently I'm test RHEL6,
on some new client platforms, which intel_pstate is not supported yet, the
frequencies and their percentage could be listed below idle percentage.
but on the mature platforms, where intel_pstate is governing, I could only get
"idle 100%" under each Package/Core/CPU.
(well, the "Actual" frequency under each "CPU" looks normal)
I tried Powertop 2.3 and 2.7, and had guessed it should be intel_pstate not providing some
necessary info to Powertop.
But it's not the case on my i5-5300U machine, it is governed by intel_pstate, but
shows frequencies well.
I tried this with Powertop 2.6.1 and 2.7.
Could you help to explain, why Powertop show only "idle 100%"s in the frequency
page?
Thanks~
The following is an example, captured from a Haswell-EP server:
PowerTOP 2.7 Overview Idle stats Frequency stats Device stats Tunables
Package | Core | CPU 0 CPU 4
| | Actual 3.2 GHz 1.9 GHz
Idle 100.0% | Idle 100.0% | Idle 100.0% 100.0%
| s 9 Core | CPU 1 CPU 5
| | Actual 3.4 GHz 2.3 GHz
| Idle 100.0% | Idle 100.0% 100.0%
| Core | CPU 2 CPU 6
| | Actual 2.0 GHz 2.3 GHz
| Idle 100.0% | Idle 100.0% 100.0%
| s Core | CPU 3 CPU 7
| s | Actual 2.3 GHz 2.6 GHz
| Idle 100.0% | Idle 100.0% 100.0%
-Wang, Xiaolong
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