Viewing Common Monitoring Data

Use the monitor subcommand to display basic data on commonly-monitored objects.

To View Common Monitoring Data
Common Monitoring Statistics

To View Common Monitoring Data

Use the --type option of the monitor subcommand to specify the object for which you want to display data, such as httplistener, jvm, webmodule. If you use the monitor subcommand without specifying a type, an error message is displayed.

Output from the subcommand is displayed continuously in a tabular format. The --interval option can be used to display output at a particular interval (the default is 30 seconds).

Before You Begin

A monitorable object must be configured for monitoring before you can display data on the object. See To Enable Monitoring.

Determine which type of monitorable object you want to monitor.
Your choices for 3.1 are jvm, httplistener, and webmodule.
Request the monitoring data by using the monitor(1) subcommand.

Example 8-7 Viewing Common Monitoring Data

This example requests common data for type jvm on instance server.

asadmin> monitor --type jvm server

UpTime(ms)                          Heap and NonHeap Memory(bytes)
current                   min        max        low        high       count

9437266                   8585216    619642880  0          0          93093888
9467250                   8585216    619642880  0          0          93093888

Common Monitoring Statistics

Common monitoring statistics are described in the following sections:

HTTP Listener Common Statistics
JVM Common Statistics
Web Module Common Statistics

HTTP Listener Common Statistics

The statistics available for the httplistener type are shown in the following table.

Table 8-1 HTTP Listener Common Monitoring Statistics

Statistic	Description
`ec`	Error count. Cumulative value of the error count
`mt`	Maximum time. Longest response time for a request; not a cumulative value, but the largest response time from among the response times
`pt`	Processing time. Cumulative value of the times taken to process each request, with processing time being the average of request processing times over request
`rc`	Request count. Cumulative number of requests processed so far

JVM Common Statistics

The statistics available for the jvm type are shown in the following table.

Table 8-2 JVM Common Monitoring Statistics

Statistic	Description
`count`	Amount of memory (in bytes) that is guaranteed to be available for use by the JVM machine
`high`	Retained for compatibility with other releases
`low`	Retained for compatibility with other releases
`max`	The maximum amount of memory that can be used for memory management.
`min`	Initial amount of memory (in bytes) that the JVM machine requests from the operating system for memory management during startup
`UpTime`	Number of milliseconds that the JVM machine has been running since it was last started

Web Module Common Statistics

The statistics available for the webmodule type are shown in the following table.

Table 8-3 Web Module Common Monitoring Statistics

Statistic	Description
`ajlc`	Number of active JavaServer Pages (JSP) technology pages that are loaded
`asc`	Current active sessions
`aslc`	Number of active servlets that are loaded
`ast`	Total active sessions
`mjlc`	Maximum number of JSP pages that are loaded
`mslc`	Maximum number of servlets that are loaded
`rst`	Total rejected sessions
`st`	Total sessions
`tjlc`	Total number of JSP pages that are loaded
`tslc`	Total number of servlets that are loaded

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	Oracle GlassFish Server 3.1 Administration Guide