HPjmeter 4.3 User's Guide

Related Topic
• Outgoing Socket Connections Frequency (page 154)
Monitor JVM and/or System Activity Menu
Method Compilation Count
Displays a list of all the methods compiled from the time the session was opened, showing the
number of times a particular method was compiled.
The metric window reports “No methods compiled since the session opened.” until the next method
compilation occurs, and then the metric data appears.
Guidelines
• The normal values for this metric are single-digit numbers.
• If the top item or items show a much larger value than the rest of entries, and the value
constantly grows, it suggests excessive method compilation.
• Normally, a method is compiled once or just a few times, which results in a very flat profile,
with none of the entries showing large numbers.
However, a JVM may have a performance problem in which a certain method, or methods,
is compiled repeatedly. Such a problem manifests itself in one entry clearly dominating the
list and showing constant growth over time.
156 Using Visualizer Functions