IBM Tivoli Composite Application Manager for Application Diagnostics, Version 7.1.0.1
Garbage Collection Analysis - J2EE attributes
The Garbage Collection Analysis - J2EE attribute group provides information from the profiler about the garbage collector in the Java Virtual Machines that are hosting an application server. For example, these attributes report the number of times the collector ran during the interval and the resulting number of objects that the collector freed. Use the Garbage Collection Analysis attributes in situations to monitor garbage-collection performance and possible problems.
The attributes within this group are used to build the Garbage Collection Analysis workspace and the J2EE application servers workspaces.
The rate (per minute) at which the Java Virtual Machine is invoking its garbage-collection routine. Format is decimal (formatted to 3 decimal places).
The percentage of heap used at the end of interval. Format is decimal (formatted to 1 decimal places).
The length (in seconds) of the interval. Format is positive integer.
The total number of free kilobytes in the heap at the end of the last garbage-collection cycle during the interval. Format is positive integer.
The number of kilobytes in the heap that were in use at the end of the last garbage collection cycle during the interval. Format is positive integer.
The delta value between the "Kbytes in Use" value for this interval and the "Kbytes in Use" value for the prior interval. A positive value indicates that the number of kbytes in use grew during the interval. Format is positive or negative integer.
The total number of kbytes freed by the garbage collector during the interval. Format is positive integer.
The name of the system on which the server is running. Format is alphanumeric string, with a maximum of 256 characters.
The number of objects the garbage collector freed during the interval (supported for IBM Developer Kit for Java). Format is positive integer.
The number of objects the garbage collector moved during the interval (supported for IBM Developer Kit for Java). Format is positive integer.
The name of the server subnode. Format is alphanumeric string, with a maximum of 128 characters.
The process ID of the JVM. Format is positive integer.
The total real time (in milliseconds) that the garbage collector required during the most recent cycle. Format is positive integer.
The percentage of real time that the garbage collector was active during the interval. Format is decimal (formatted to 1 decimal place).
The date and time that the monitoring agent for WebLogic Server agent collected data. The valid format is a 12-character timestamp. For the STR and SCAN functions, the format is MM/DD/YY HH:MM:SS; the following table shows the values contained in this character string:
Format of the 12-character timestamp
Character String Meaning MM Month DD Day YY Year HH Hour MM Minute SS Second
Example: 09/13/06 18:32:03 indicates the data was collected on September 13, 2006, at 18:32:03.
This attribute was designed for logging and reporting data-collection times rather than for creating situations. To specify a time and date for comparison and testing, use attributes from the Universal Time or Local Time groups.
The name of the J2EE application server. Format is alphanumeric string, with a maximum of 256 characters.
The number of times the garbage collector ran during the interval. Format is positive integer.
Additional information:
Parent topic:
Attributes for ITCAM Agent for J2EE