HPjmeter 4.3 User's Guide

Tool Bar Buttons for Manipulating Graphical Data...............................................................202
Tool Bar Buttons for Manipulating Garbage Collection Data.............................................202
Special Button or Other Gadget Functions...........................................................................203
Mark an Item for Search..............................................................................................203
Using the Marked Object List on the Console.............................................................203
Find a Search Pattern...................................................................................................204
Editing the Finder...................................................................................................205
Pause or Resume Graphical Time-based Scrolling............................................................205
Changing Time Interval in GC Data Visualizers...............................................................206
Select a Subset of the Available Data........................................................................206
Apply Selected Interval Across All Metrics..................................................................208
Reset Interval to Default Settings Across All Metrics......................................................209
Changing Time Interval in Monitoring Visualizers............................................................209
Change Color Selection for Histogram Display.........................................................................210
9 Understanding How HPjmeter Works .......................................................212
Performance Overhead on Running Applications......................................................................212
Application Server Startup Time.........................................................................................212
Monitoring Overhead.......................................................................................................212
Changes in Memory Overhead With Dynamic Attach......................................................212
Profiling Overhead and Intrusion........................................................................................212
Node Agent Overhead.....................................................................................................212
Console Overhead...........................................................................................................213
Data Sampling Considerations...............................................................................................213
Using Confidence Interval to Indicate Sample Validity...........................................................213
How Memory Leak Detection Works.......................................................................................214
Tapping in to Standard Management of the Java Virtual Machine...............................................215
10 Troubleshooting ...................................................................................217
Documentation and Support...................................................................................................217
Identifying Version Numbers..................................................................................................217
Installation...........................................................................................................................217
Console .............................................................................................................................218
JVM agent...........................................................................................................................220
Node agent.........................................................................................................................221
Zero Preparation Profiling......................................................................................................221
Unexpected Behavior in Visualizers.........................................................................................221
A Quick References...................................................................................222
Connecting to the HPjmeter Node Agent.................................................................................222
Determining Which HPjmeter Features Are Available With a Specific JVM Version........................222
Default Location of Xverbosegc and Allocation Site Statistics Data Files........................................223
Glossary .................................................................................................224
Index.......................................................................................................227
18 Contents