HP Intelligent Management Center v5.2 Application Performance Manager Administrator Guide

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Figure 212 Memory Usage area layout
Memory Usage area fields:
 Memory usage trend graph—Shows the memory usage trend of the JBoss server over the selected
time period in a line graph. Hover the cursor over a spot in the curve to view the memory usage at
the specific time point. By default, the graph shows the last 1 hour data. To change the report
period, click the Last 1 Hour icon on the upper right of the graph, and then select an icon from
the list. Available options include Last 6 Hours , Today , Yesterday , This Week , This
Month , and This Year .
 Attribute/Value—Monitor index name and data.
 Free Memory (%)—Percentage of free memory to total memory allocated to the JBoss server by
the operating system in the last polling interval. Set Threshold icon —Click the Set Threshold
icon to set alarm thresholds for the free memory percentage. The specified alarm thresholds
appear on the memory usage trend graph as dotted lines. The data is highlighted in orange
when the free memory percentage reaches the level-1 threshold, and is highlighted in red when
it reaches the level-2 threshold. Use either the global thresholds or custom thresholds. For
information about setting thresholds, see "Threshold Management."
 History icon —Click the History icon to view changes of the free memory percentage
over a specified time period in a line graph. Hover the cursor over a spot on the curve to view
the free memory percentage at the specific time point. Authorized users can view free memory
percentage statistics over the last 1 hour, last 6 hours, today, yesterday, this week, this month,
and this year by clicking the corresponding icons on the upper right of the graph.
Stack
The Stack area layout is shown in Figure 213.