3.Scroll down if needed to see the Process CPU Usage Alert. Check this box also to turn this alert on.

4.Set the usage threshold to reflect the expected consumption and designate a duration, if desired.

5.Click Apply to activate checking for this threshold.When the set threshold is met, an alert notice is posted on the console.

Double-click on the console alert to display the Percent CPU Utilization visualizer. In this visualizer, you can see system and process CPU usage during the period of the monitoring session plotted against the known resources of the server.

As an example, assume that you have a 4-CPU system, and you expect your Java application to consume at least 1.5 CPU.

HPjmeter presents CPU utilization percentages as the number of CPUs x 100 to arrive at the total possible percent of use. Therefore, expected use of 1.5 CPU would be equal to or greater than 150% of 1 CPU out of a total of 4 available CPU. By applying this value (150%) in the Alert Controller, HPjmeter notifies you when that value is exceeded during the monitoring session. A notification is generated for display on the console and recorded in the alert log.

Conversely, if you expect that your application will always use at least 100% of 1 CPU, set the operator at less than or equal to 100% to trigger a notification that the application is not consuming resources as expected.

For more information, see also:•Set Session Preferences (page 26)•Using Alerts (page 103)•Percent (%) CPU Utilization (page 136)•Identifying Unexpected CPU Usage by Method (page 39)System CPU Usage Alert

This alert measures overall CPU usage for the entire system, not time spent in the system processor state. Enable this alert to track target levels of system-level CPU usage. Significant variance from target levels may indicate over- or under-utilization of system resources.

By default, this notification is enabled in Session Preferences, but is turned off in the Alert Controller until you turn it on. Once turned on, this alert activates when system CPU utilization reaches the set value. The default value is 50 percent of 1 CPU.

Procedure 7-5 To Set the System CPU Usage Alert

1.Connect to the server, and click the appropriate check box to enable the System CPU Usage Alert on the Alerts tab in the Set Preferences window.

2.Once connected to the JVM, open the Alert Controller.

3.Scroll down if needed to see the System CPU Usage Alert. Check this box also to turn this alert on.

4.Set the utilization threshold to reflect the consumption threshold and designate a duration, if desired.

5.Click Apply to activate checking for this threshold.

When the set threshold is met, an alert notice is posted on the console.

Double-click on the console alert to display the Percent CPU Utilization visualizer. In this visualizer, you can see system and process CPU usage during the period of the monitoring session plotted against the known resources of the server.

As an example, assume that you have a 4-CPU system, and you expect your Java application to consume no more than 3 CPU over any 5–minute period.

HPjmeter presents CPU utilization percentages as the number of CPUs x 100 to arrive at the total possible percent of use. Therefore, maximum use of 3 CPU would be equal to or greater than

114 Using the Console