HPjmeter 4.3 User's Guide

Figure 70 Presentation of Allocation Sites Statistics and Zero Preparation GC Data Collection During
the Same Time Period
Related Topics
• Collecting Allocation Site Statistics for Viewing in HPjmeter (page 98)
• Collecting GC Data with Zero Preparation (page 99)
• Using Visualizer Tool Bars (page 201)
• Basic Garbage Collection Concepts (page 103)
• Identifying the Site of Excessive Object Allocation (page 54)
User-Defined X-Y Axes
This visualizer is supplied to help you to experiment with your own combinations of data gathered
by -Xverbosegc or -Xloggc.
Select variables for the X and Y axes from the drop-down lists. HPjmeter plots the X-Y relationships
for your captured data file. For a partial list of available metrics, see -Xverbosegc and -Xloggc
Options and Their Corresponding Metrics (page 101).
For some user-defined selections, it is possible that the data capture obtained the GC type without
being able to ascertain the numerical value of the data point. Data points with unknown numerical
values are shown in gray near zero (0) on the X or Y axis of a graph. To determine the GC type
of a data point, check the color in the legend given below the graph.
Using Specialized Garbage Collection Displays 191