[PVE-User] CPU freq scale in PVE 6.0

José Manuel Giner jm at ginernet.com
Thu Jan 23 15:34:47 CET 2020


Hello,

Since PVE 6.0, we detect that the CPU frequency is dynamic even if the 
governor "performance" is selected.

How can we set the maximum frequency in all the cores?

Thank you.


root at ns1031:~# cat /proc/cpuinfo | grep MHz
cpu MHz         : 1908.704
cpu MHz         : 1430.150
cpu MHz         : 1436.616
cpu MHz         : 1433.659
cpu MHz         : 1547.050
cpu MHz         : 2299.611
cpu MHz         : 2931.782
cpu MHz         : 3321.946
cpu MHz         : 3397.896
cpu MHz         : 3401.725
cpu MHz         : 3401.701
cpu MHz         : 3170.021
cpu MHz         : 2502.847
cpu MHz         : 1534.596
cpu MHz         : 2969.438
cpu MHz         : 3435.646
cpu MHz         : 1992.717
cpu MHz         : 2922.292
cpu MHz         : 2917.282
cpu MHz         : 2921.654
cpu MHz         : 2484.807
cpu MHz         : 1866.995
cpu MHz         : 1629.151
cpu MHz         : 2841.298
cpu MHz         : 3404.503
cpu MHz         : 3401.732
cpu MHz         : 3406.120
cpu MHz         : 2189.093
cpu MHz         : 1545.454
cpu MHz         : 3348.573
cpu MHz         : 1564.159
cpu MHz         : 3438.787
root at ns1031:~#
root at ns1031:~#
root at ns1031:~#
root at ns1031:~# cpupower frequency-info
analyzing CPU 0:
   driver: intel_pstate
   CPUs which run at the same hardware frequency: 0
   CPUs which need to have their frequency coordinated by software: 0
   maximum transition latency:  Cannot determine or is not supported.
   hardware limits: 1.20 GHz - 3.60 GHz
   available cpufreq governors: performance powersave
   current policy: frequency should be within 1.20 GHz and 3.60 GHz.
                   The governor "performance" may decide which speed to use
                   within this range.
   current CPU frequency: Unable to call hardware
   current CPU frequency: 1.90 GHz (asserted by call to kernel)
   boost state support:
     Supported: yes
     Active: yes
root at ns1031:~#
root at ns1031:~#



-- 
José Manuel Giner
https://ginernet.com



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