vCenter Database views (Counters)

Hi All,

I´m searching a counter inside of database that vcenter use to save all informations.

I´ll use this counter to monitore a threshold of vcpu ready time, to do it i´ve two options:

1- Create alarm in vcenter (but i believe that vcenter cant see this parameter to monitoring and trigger this alarm)

2 - point a counter of %rdy of vcpu to my software of monitoring.

I found one guide about this, but dont have  %rdy(http://www.vmware.com/pdf/vc_dbviews_40.pdf ) i´m using vcenter 4.1
Someone can help ?

Thanks