JVM Overview attributes

Use the JVM Overview attribute group to see a high-level view of the information that is collected by the OMEGAMON Monitoring for JVM collectors in your enterprise. The key performance indicators highlight the worst performing Java virtual machine (JVM) for each category, among the JVMs monitored by the collector on the LPAR.

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

Highest Avg Lock Hold Time Indicates the highest average amount of time in milliseconds that the lock was held or owned by a thread, among the Java virtual machines (JVMs) monitored by the collector on the LPAR.

Highest Avg Lock Hold Time PID Indicates the UNIX System Services process ID (PID) of the JVM with the highest average lock hold time for the collector on the LPAR.

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

Highest Avg Occupancy Percent PID Indicates the UNIX System Services PID of the JVM with the highest average occupancy percentage for the collector on the LPAR.

GC Rate per Minute Indicates the highest rate of garbage collections per minute.

Highest GCs per Minute PID Indicates the UNIX System Services PID of the JVM with the highest garbage collection rate per minute for the collector on the LPAR.

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

Highest General CPU Percent PID Indicates the UNIX System Services PID of the JVM with the highest general CPU percentage for the collector on the LPAR.

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

Highest zIIP on CP Percent PID Indicates the UNIX System Services PID of the JVM that had the highest zIIP on CP percent for percent for the collector on the LPAR.

Highest Lock Missed Percent Indicates the highest percentage among the JVMs monitored by the collector on the LPAR, of total gets for which the thread that is trying to enter the lock on synchronized code had to wait.

Highest Lock Missed Percent PID Indicates the UNIX System Services PID of the JVM with the highest lock missed percentage for the collector on the LPAR.

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

Highest Lock Utilization Percent PID Indicates the UNIX System Services PID of the JVM with the highest lock utilization percentage for the collector on the LPAR.

Highest Percent Time in Garbage Collection Pauses Indicates the highest percentage of time that was spent in garbage collection pauses among the JVMs monitored by the collector on the LPAR.

Highest Percent Time in Garbage Collection Pauses PID Indicates the UNIX System Services PID of the JVM with the highest garbage collection pause percentage for the collector on the LPAR.

System GC Count Indicates the highest number of garbage collections that were forced by the system among the JVMs monitored by the collector on the LPAR.

Highest System GC Count PID Indicates the UNIX System Services PID of the JVM with the highest number of system-forced garbage collections for the collector on the LPAR.

Thread Count Indicates the highest thread count.

Highest Thread Count PID Indicates the UNIX System Services PID of the JVM with the highest thread count for the collector on the LPAR.

Highest Threads Blocked Indicates the highest number of blocked threads among the JVMs monitored by the collector on the LPAR.

Highest Threads Blocked PID Indicates the UNIX System Services PID of the JVM with the highest number of blocked threads for the collector on the LPAR.

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.

Monitored JVM Count Indicates the number of JVMs on the LPAR that are being monitored by the OMEGAMON Monitoring for JVM collector.

Not Monitored JVM Count Indicates the number of JVMs on the LPAR that are not being monitored by the OMEGAMON Monitoring for JVM collector.

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

SMF ID Collector ID Indicates the combined SMF ID and OMEGAMON Monitoring for JVM Collector ID in the form SMF_ID:Collector_ID, which identifies where the data was collected.