Overview

The Memory Statistics administration page provides general information about JVM Heap Usage, Garbage Collection configuration and statistics and memory capped queue statistics.

Required Modules

These features require the inclusion of the memory module when you run createproject to create the project directories.

View incoming links.

Viewing Memory Statistics

To view memory statistics, select Diagnostics -> Memory Statistics in the AIE Administrator. The Memory Administration page appears.

From here you can:

Sort/resort the table by the desired data by clicking the desired column heading.

Memory Usage

The following tables summarize the information found on the Memory Statistics administration page.

Statistic	Description
Free Memory	Amount of memory that is allocated to the JVM heap, but unused by AIE.
Total Memory	Amount of memory that is allocated to the JVM heap.
Used Memory	Amount of memory that is allocated from the JVM heap for AIE.

GC Info (Garbage Collection Info)

Understanding these statistics requires knowledge of Java garbage collection.

Statistic	Description
Collectors	The garbage collection Collectors that are runnning.
Memory Pools	The memory pools that are available.
Tenured Heap Used	The amount of the JVM heap currently allocated to the Tenured Generation
Tenured Heap Max	The maximum amount of JVM heap allocated to the Tenured Generation at any point during the current AIE session (this statistic resets between re-starts of AIE).
Minor Collections	Number of minor garbage collection events
Major Collections	Number of major garbage collection events

Memory-Capped Queue Summary

See Memory Usage Tuning for more background information on Memory-Capped queues.

Statistic	Description
Shared Size	The amount of memory currently being shared between all memory-capped queues.
Shared Max Allowed	The maximum amount of memory allowed to be shared between all memory-capped queues.
Messages Allowed When Cap Reached	The number of messages that should be allowed into the system if the memory cap is reached.

Memory Capped Queue Statistics