13 Replies Latest reply on Jan 14, 2019 8:25 AM by haxxN

    Very poor VM performance, host CPU utilization low. Please advise.

    haxxN Lurker



      First of all this is my first post here. I hope you guys will be able to help me out.


      I just started a new position at work and one of my first jobs is to investigate the poor performance we are getting out of our VMs on two ESXi 5.5 hosts.


      The hosts have pretty low CPU utilization, but esxtop reports very high %USED for a couple VMs. Any idea on where to start?


      Host CPU & RAM usage:

      esxtop results on that host:



      I'm kind of a newbie regarding best practices for VM performance so any help is greatly appreciated.