Virtual Machines. Right-sizing — VMs Oversized for Memory and CPU (Ops Mgr data)

This report helps you detect virtual machines that have more allocated vRAM or vCPU resources than they require. The report will only support VMs that run Ops Mgr agents inside the virtualized OS (for VMs without agents, use the Oversized VMs report that was present in previous releases).


The Virtual Machines. Right-sizing - VMs Oversized for Memory and CPU (Ops Mgr agent data) report analyzes historical data on '% Memory Used' and '% Processor Time' performance metric values collected by the Ops Mgr agent running in the guest OS. These metrics gathered inside the guest OS provide better recommendations for right-sizing (especially in terms of memory usage).


Date/time Selection: defines a time period to analyze in the report.

Sections to show: defines whether the report will analyze vRAM resource allocation, vCPU resource allocation or both.

Show details: defines whether the report should display results in the collapsed or expanded view. If you choose No, only general information will be displayed in the report. The report will not include charts in the output.

Performance Modeling Based On: defines whether the report will use maximum (peak) or average CPU and memory historical values to assess VM performance.

Scope: defines a list of Groups or Objects to include in the report (by default, the VMware Virtual Machine Group group is selected).

Top N Count: defines the maximum number of virtual machines to display in the report output.

Sample Usage

Report on top 10 VMs that have more allocated memory than they require. Use performance statistics for the previous quarter as a ground for the report analysis.


  1. Open the Virtual Machines. Right-Sizing — VMs Oversized for Memory and CPU (Ops Mgr agent data) report.
  2. From the From list, select Previous Quarter > First day. From the To list, select Previous Quarter > Last day.
  3. From the Sections to Show list, select vRAM.
  4. From the Show Details list, select Yes (expanded).
  5. From the Performance Modeling Based On list, select Average Usage.
  6. In the Top N Count field, enter 10.
  7. Click Run to view the report.

Report Output

The report will show tables and charts displaying information on top 10 VMs memory consumption: allocated, recommended, min/max and average memory values, standard deviation and current configuration.


If a virtual machine was turned off at some time during the reporting interval, then the configuration information (amount of allocated memory) for this period may be unavailable.

All recommendations are based on the current configuration. If a virtual machine has no current configuration (is turned off or decommissioned), it will not be included in the report.

You can click the name of an oversized VM or the Oversized VMs link in the RAM analysis table to drill down to performance details for these VMs.

You can also scroll down to see performance details for the VMs that cannot be analyzed.