Runtime went backwords

[Valerio Pachera]

Hi, I'm runing Proxmox VE 4.4-76 and I have a pfsense 2.3.2 guest.
This guest was showing messages like these on the console:
calcru: runtime went backwards from 18030 to 7703 usec for pid 1 (init)
calcru: runtime went backwards from 14466569177 to 6181281566 usec for pid 0 (kernel)
The server processor is a Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz which has 'constant_tsc'.
What may cause this issue?

 

[markus_]

If it still applies to someone:
For me the solution was to reduce the CPU units to 100 in "Hardware" > "Processors" (make sure you have "Advanced" checked) of the VM (Proxmox VE 6.2-10).

This issue also seems to affect most of BSD distros like pfsense and opnsense are.

 

[Elie.SF]

It seems to be a problem with runtime "CPU fluctuating frequency" management.

Will Pfsense "Power Savings" static configuration helps ?