You don't need to enable anything from esxi 5.0 it would automatically be enabled.
Check the link for more info http://www.vmware.com/files/pdf/hpm-perf-vsphere5.pdf
You don't need to enable anything from esxi 5.0 it would automatically be enabled.
Check the link for more info http://www.vmware.com/files/pdf/hpm-perf-vsphere5.pdf