I'm working with a large vSphere4 environment currently that has multiple vCPUs assigned to almost every VM. This includes web servers and application development/testing servers...
After learning more about SMP, it makes sense that "CPU Ready" latency is high on almost all of the VMs...likely the result of "Idle" cycles being queued up on the physical processors for VMs that are only utilizing single CPU threads.
I'm working with an application owner to drop the number of CPUs to 1 in the hope that it will help me make a case for reducing the CPU count across the board, except for in cases that are explicitly proven to require more than one.
More updates to follow after the adjustment...
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