[pve-devel] intel pstate: wrong cpu frequency with performance governor

Stefan Priebe - Profihost AG s.priebe at profihost.ag
Mon Sep 19 07:21:59 CEST 2016


The cpufreq and intel pstate driver were somewhat broken in 4.4 there were a lot of changes in 4.5 or 4.6 (can't remember). I'm using around 20 cpufreq (also a lot of optimizations) patches in 4.4.

I grabbed those from mr hoffstaette who has his own repo of 4.4 patches and backports.

See here and look for prefix cpufreq https://github.com/hhoffstaette/kernel-patches/tree/master/4.4.21

Greets,
Stefan

Excuse my typo sent from my mobile phone.

> Am 19.09.2016 um 06:49 schrieb Dietmar Maurer <dietmar at proxmox.com>:
> 
> 
>> and I have found than 3 hosts of my 15 host cluster have wrong cpu frequency.
>> 
>> All nodes are dell r630, with xeon v3 3,1ghz. (all with last bios/microcode
>> updates , last proxmox kernel)
> 
> model name    : Intel(R) Xeon(R) CPU E3-1231 v3 @ 3.40GHz
> 
> but I never observer such problems. I get:
> 
> # cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_cur_freq 
> 3400000
> 
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