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Maximum, minimum, average and latest CPU Usage values differ in VMware vCenter and Veeam Monitor

KB ID: 1013
Product: Veeam ONE 11, Veeam ONE 10, Veeam ONE 9.5, Veeam ONE 9.0, Veeam ONE 8.0, Veeam ONE 7.0, Veeam ONE 6.5, Veeam ONE 6.0
Published: 2011-07-14
Last Modified: 2021-03-22

Challenge


Cause

VMware calculates these values with Hyperthreading Technology enabled.

The VMware vSphere client shows that “Hyperthreading” is in the “Active” state under the “General” section on the Summary tab for the ESX(i) host within the virtual infrastructure:


User-added image


As a result, the “Advanced” performance page for this host shows total values for all processors but with the Hyperthreading feature enabled.

Once all object are selected under the Chart Option window, the CPU Usage is displayed for all virtual CPUs and the ESX(i) host itself. Summing up the average values of each virtual CPU and then dividing by the number of virtual CPUs produces a value approximately two times smaller than the TOTAL CPU Usage value for the host.

Veeam Monitor calculates the total CPU Usage without using VMware’s “Total CPU Usage for entire host with Hyperthreading enabled” option. It takes each CPU's Usage and then performs calculations as described above. Thus, in Veeam Monitor, the Total CPU Usage value is two times smaller than CPU Usage for the entire host on VMware’s graphs.

Solution

No solution required as this is the expected behavior.

More information

If you have any questions or problems, please contact Veeam Support at http://www.veeam.com/support

KB ID: 1013
Product: Veeam ONE 11, Veeam ONE 10, Veeam ONE 9.5, Veeam ONE 9.0, Veeam ONE 8.0, Veeam ONE 7.0, Veeam ONE 6.5, Veeam ONE 6.0
Published: 2011-07-14
Last Modified: 2021-03-22

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