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CHR PROXMOX Performance

Posted: Wed Jul 10, 2019 3:31 am
by chechito
Xeon e5506
32gb ram
chelsio t520 sfp+ NIC

700mbps NAT + Fast-Track

4 cores assigned to virtual machine

60% CPU usage on ROuterOS confirmed on Proxmox GUI
profile shows networking and ethernet cpu usage


Is this normal??

any advice to improve performance??

Re: CHR PROXMOX Performance

Posted: Wed Jul 10, 2019 2:23 pm
by angriukas
Hard to say is it normal. There are lot of factors, like host NIC drivers, cpu version and etc...
Performance tweaks are here.
General recommendations:
  • use 'host' CPU instead of kvm64
  • disable PVE 'firewall' for virtual network devices
  • use Virtio devices (disk and network) to have full integration with PVE
  • use 'write back' for disk
  • use one socket for CHR VM
  • play with CPU flags, try remove 'hpet' from CHR VM (via CPU args)
  • disable 'tablet for pointer'
  • separate networks for admin purposes and for main traffic