JVM Health Summary attributes

Use the JVM Health Summary attributes to view key performance indicators that indicate the health of a monitored Java virtual machine (JVM).

Application Indicates the type of application that is running the Java virtual machine (JVM).

Application Version Indicates the version of the application or feature.

ASID Indicates the hexadecimal address space ID of the job or started task that is hosting the Java virtual machine (JVM).

Avg Lock Hold Time Indicates the average amount of time in milliseconds that the lock was held or owned by a thread.

Heap Occupancy Indicates the average percentage of heap that was in use after garbage collection.

Collector ID Indicates the identifier of the OMEGAMON Monitoring for JVM collector.

GCs per Minute Indicates the rate of garbage collections per minute.

General CPU Percent Indicates the proportion of the execution time that was spent on general-purpose processors within the last 30 seconds.

zIIP on CP Percent Indicates the proportion of the execution time within the last 30 seconds that occurred on general-purpose processors that was eligible to be executed on zIIP processors, which were not available.

Job Name Indicates the name of the job or started task that is hosting the JVM.

JVM Profile Indicates the name of the JVM profile that is running for this CICS region.

Liberty Profile Describes whether the JVM is running under a Liberty profile.

Lock Missed Percent Indicates the percentage of total gets for which the thread that is trying to enter the lock on synchronized code had to wait.

Lock Util Percent Indicates the percentage of time that the lock was held.

Managed System Identifies the node that represents the system where the JVM data was collected. The value is a text string of up to 32 alphanumeric characters that combines the Collector ID and the SMF ID in the following format: Collector_ID:SMF_ID:JVM.

24-Bit Free Percent The percentage of 24-bit virtual memory remaining below the 16MB line in the address space.

24-Bit Free The amount of 24-bit virtual memory remaining below the 16MB line in the address space.

31-Bit Free Percent Percentage of 31-bit virtual memory remaining below the 2GB bar in the address space.

31-Bit Free The amount of 31-bit virtual memory remaining below the 2GB bar in the address space.

64-Bit Free Percent The percentage of 64-bit virtual memory remaining in the address space.

64-Bit Free The amount of 64-bit virtual memory remaining above the bar in the address space.

Percent Time in GC Pauses Indicates the proportion of time that was spent in garbage collection pauses.

Process ID Indicates the UNIX System Services process ID (PID) of the JVM.

SMF ID Indicates the System Management Facility (SMF) identifier of the LPAR.

Start Time Indicates the date and time the JVM was started.

Subsystem Type Identifies the z/OS subsystem type of the job or started task that is hosting the JVM. Valid values include CICS, CICSTG, DB2, IMS, Liberty, Standalone, WebSphere, z/OSMF, ODM, UCD, Unknown, and N/A. N/A means that the Java Agent has not yet determined the subsystem type because the Java Agent is not completely initialized.

System GC Count Indicates the number of garbage collections that were forced by the system.

Thread Count Indicates the number of threads.

Threads Blocked Indicates the number of blocked threads.