I have a Dell R920 with 4x Intel Xeon E7-8895 v2 processors. This system is a KVM hypervisor host that runs Ubuntu Server 18.04. I'm noticing that my VMs are randomly stalling and locking up, I've come to the conclusion that processor frequency auto scaling is to blame for this. I changed the system profile in the BIOS to "Performance Per Watt (OS)" and have set the linux governor to performance. However, when I run "cpupower monitor" I notice that the frequencies are still different among the cores.
How do I configure the system so that all cores are operating at the same turbo boost frequency?
I tried the following: cpupower frequency-set -f 3333
But I get this error:
How do I configure the system so that all cores are operating at the same turbo boost frequency?
I tried the following: cpupower frequency-set -f 3333
But I get this error:
Code:
root@lab:~/# cpupower frequency-set -f 3333Setting cpu: 0
Error setting new values. Common errors:
- Do you have proper administration rights? (super-user?)
- Is the governor you requested available and modprobed?
- Trying to set an invalid policy?
- Trying to set a specific frequency, but userspace governor is not available,
for example because of hardware which cannot be set to a specific frequency
or because the userspace governor isn't loaded?