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CPU Usage Summary Might Appear as Negative Percentage, and Memory Available to New Virtual Machines Appears as Unavailable for GSX Server Hosts

Details

Why does CPU usage appear as a negative percentage, and the memory available to new virtual machines appear as unavailable for GSX Server hosts?

Solution

Negative values and over 100% values are usage volatilities. They can be negative or over 100% to indicate either less usage or extremely high usage growth, respectively. The volatility indicates the rate of change:
  • 0% means no change in the usage rate.
    If usage remains constant at 10%, the volatility is 0%. If usage remains constant at 90%, the volatility is still 0%.
  • Readings of -500% and 1000% are also possible in extreme situations, such as when the starting point is either too high or too low to compare.

The memory available for virtual machine information is supported only on ESX Server, not on GSX Server. Therefore, the GSX Server host shows the memory as unavailable.

Keywords

50262; Virtual; Center; 1495; vc130

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Actions
  • KB Article: 1495
  • Updated: Aug 14, 2009
  • Products:
    VMware VirtualCenter
  • Product Versions:
    VMware VirtualCenter 1.0.x
    VMware VirtualCenter 1.1.x
    VMware VirtualCenter 1.2.x
    VMware VirtualCenter 1.3.x