Question about Running top and dstat on Proxmox hypervisor

[waterloopan]

I have a server running proxmox 8.2 config like summary.png
I am runing a ubuntu 24.04 vm on proxmox, hardware config like vm.png
Then I run s-tui and select stress in that vm,top and dstat out like vm-monitor.png
Then I run top and dstat on proxmox host,see output like host-monitor.png

Question:
1. on host-monitor.png,
top shows cpu us 50%, what dose this mean? I though this value should be 85% (48/56=85%) , just like the kvm process show cpu usage 4800%
which is what dstat shows cpu us 86%

 

[waterloopan]

Thank you very much for your help