Disk Activity - Console Test

This test reports statistics pertaining to the input/output utilization of each physical disk on the control domain.

This test is disabled by default. To enable the test, go to the enable / disable tests page using the menu sequence : Agents -> Tests -> Enable/Disable, pick Oracle VM Manager as the desired Component type, set Performance as the Test type, choose the test from the disabled tests list, and click on the < button to move the test to the ENABLED TESTS list. Finally, click the Update button.

Target of the test : Oracle VM Manager

Agent deploying the test : A remote agent

Outputs of the test : One set of results for each disk partition of the control domain.

Configurable parameters for the test
Parameter Description

Test period

How often should the test be executed

Host

The host for which the test is to be configured.

Port

The port number at which the specified Host listens to. By default, this will be NULL.

Oracle VM Manager, Oracle VM Manager
User, Oracle VM Manager Password,
and Confirm Password

This test remotely connects to the Oracle VM Manager that manages the monitored Oracle VM Server and uses the web services API of the Oracle VM Manager to pull out metrics of interest. To enable this test to communicate with the web services API, you first need to configure the test with the IP address or host name of the Oracle VM Manager. This can be done using the Oracle VM Manager text box. Then, you need to configure the test with the credentials of a user with Admin rights to the Oracle VM Manager. Use the Oracle VM Manager User and Oracle VM Manager Password parameters to configure these credentials. Finally, confirm the password by retyping it in the Confirm Password text box.

SSL

By default, the Oracle VM Manager is SSL-enabled. Accordingly, the ssl flag is set to Yes by default. This indicates that the eG agent will communicate with the Oracle VM Manager via HTTPS by default.

WebPort

By default,, the Oracle VM Manager listens on 7002. This implies that while monitoring an Oracle VM server via an SSL-enabled Oracle VM Manager, the eG agent, by default, connects to port 7002 of the Oracle VM Manager to pull out metrics. In some environments however, this default port may not apply. In such a case, against the WebPort parameter, you can specify the exact port at which the Oracle VM Manager in your environment listens so that the eG agent communicates with that port.

Measurements made by the test
Measurement Description Measurement Unit Interpretation

Percent disk busy

Indicates the percentage of elapsed time during which the disk is busy processing requests (i.e., reads or writes).

Percent

Comparing the percentage of time that the different disks are busy, an administrator can determine whether load is properly balanced across the different disks.

Disk read time

Indicates the average time (in seconds) taken by the disk to read data.

Secs

Ideally, the value of this measure should be low.

Disk write time

Indicates the average time (in seconds) taken by the disk to write data.

Secs

Ideally, the value of this measure should be low.

Reads from disk

Indicates the number of reads happening on a logical disk per second.

Reads/Sec

A dramatic increase in this value may be indicative of an I/O bottleneck on the control domain.

Data reads from disk

Indicates the rate at which bytes are transferred from this disk during read operations.

Kbytes/Sec

A very high value indicates an I/O bottleneck.

Writes to disk

Indicates the number of writes happening on this disk per second.

Writes/Sec

A dramatic increase in this value may be indicative of an I/O bottleneck.

Data writes to disk

Indicates the rate at which bytes are transferred from the disk during write operations.

Kbytes/Sec

A very high value indicates an I/O bottleneck.