Dom0 CPU at 20%

dom0 CPU precentage is at twenty percent. is this expected? i am have a few VMs open and i don’t remember dom0 being this high. it’s 20 percent even when I am doing nothing

You can check which process in dom0 is consuming the CPU by running this command in dom0 terminal:


For me it’s about 12% in idle on rather old hardware. I have noted QubesOS idle CPU usage increased significantly when I switched from 4.0 (about 2% in idle) to 4.1. The switch to 4.2 did neither increase nor decrease the CPU usage for me. Usually qubesd and libvirtd contribute the most. Booth about 4%-5%.