I'm trying to understand why I am seeing high CPU ready time. I have a host with 32 physical processors (no HT). I have 8 VMs each with 4 vCPUs so a total of 32 vCPUs. From time to time I see very high ready time on 2 or 3 VMs. I've seen it up to 40% with esxtop. But I am not overprovisioning vCPUs on this host at all. I understand that the Hypervisor itself needs "some" CPU resources but I wouldnt think it would need so much to cause that high of ready time.
Also I am not putting any limits on CPU either.
Any ideas as to why I am seeing such a high ready time even though I am not oversubscribing CPUs?