Github user jayakarteek commented on the issue:

    https://github.com/apache/cloudstack/pull/1918
  
    @rafaelweingartner 
    
    The CPU.Reservation value by **default** is 0, Also the value is set in 
VMware not from the ACS UI.
    this gives ambiguity about the CPU allocated and Utilised.
    
    Use case 1 :
    CPU.Reservation is 0 by default, In this case we cannot calculate % as the 
value is always zero.
    
    Use case 2:
    CPU.Reservation is set by VMware admin say 500Mhz.
    But while creating vm-instance  using ACS UI , admin selected service 
offering as Medium Instance which is 1Ghz CPU. so CPU utilisation will be wrong.
    In case say cloud environment has 30 instances , then Vmware admin has to 
manually set the CPU.Reservation value for each of the VM Instance which  is 
cumbersome. 
    
    
    



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