EVA Processor Usage Test

This test tracks the CPU usage of and data traffic handled by the processor on each EVA controller, and thus alerts administrators to any real or potential contention for CPU resources on the controller.

Target of the test : An EVA Storage Array

Agent deploying the test : A remote agent

Outputs of the test : One set of results for each controller.

Configurable parameters for the test
Parameter Description

Test Period

How often should the test be executed.


The host for which the test is to be configured.


Refers to the port used by the EVA SAN device.  By default, it is null.


Specify the full path of the directory in which the evaperf.exe has been installed.


Specify the name of the EVA SAN array that has been configured for monitoring.


This test uses the EVAPerf software component to auto-discover the device ports on an EVA storage array. The EVA Controller Status test on the other hand uses the SSSU console to discover device ports. During auto-discovery, the EVAPerf utility reports the WWN names of the device ports. In contrast, the SSSU console reports the friendly names of the same device ports.

To ensure that device port references are uniform and consistent across tests, you can optionally configure this test to use the SSSU console (instead of EVAPerf) to perform device port discovery. This way, the names of device ports will be the same for this test and the EVA Controller Status test. To enable device port discovery via the SSSU console, configure the full path to the location of the SSSU.exe in the SSSULocation text box. If you prefer not to use SSSU.exe for discovering device ports and would rather use the EVAPerf component instead, then, set this parameter to none.

Password and
Confirm Password

To use the SSSU.exe for discovering the friendly names of device ports, specify the user credentials using which the HP EVA array is to be accessed in the Username and Password text boxes. Confirm the password by retyping it in the Confirm Password text box. If you do not wish to use the SSSU.exe, then set these parameters to none


Indicate the duration (in seconds) for which this test should wait for a response from the storage device. By default, this is set to 60 seconds.

Measurements made by the test
Measurement Description Measurement Unit Interpretation

CPU busy time

Indicates the percentage of time the processor on this controller was busy processing requests.


Comparing the value of this measure across controllers will enable you to accurately identify the controller that is consuming CPU resources excessively. Irregularities in load balancing across controllers can thus be isolated, and relevant remedial action initiated. 

Data transfer time

Indicates the percentage of processor time used for data transfer operations.


Comparing the value of this measure across controllers will enable you to accurately identify the controller that is spending too much CPU on data transfer operations.