HPjmeter 4.2 User's Guide

HotSpot JVM, 194
MBean
attributes, 54, 55
Attributes tab in JMX viewer, 54
change attributes in JMX viewer, 54
enabling notifications for attributes, 56
filter list of, 53
list of, 53
Notification tab, 56
Operations tab, 55
relational information, 56
tab navigation in JMX viewer, 53
using operations functions in the JMX viewer, 55
measurement
disabled for zero preparation GC data collection, 89
enabled for zero preparation GC data collection, 89
memory
allocation statistics, 48
checking heap allocation, 43
confirming leaks, 43
console use, 100
designating area of interest in JMX viewer, 50
heap monitor, 43
JMX tab, 49
leak detection, 189
leak location, 111
leak possibilities, 156
leak sample application, 33
leak severity, 43
leak window, 110
locating assignment, 52
locating inefficiencies in usage, 68
locating problems, 78, 122, 144
paging, 40
set threshold for expected out-of-memory alert, 106
set threshold for leak location alert, 106
spaces, 49
usage, 50
usage fluctuations in heap, 49
usage thresholds in JMX viewer, 50
menu
Edit, 97
menus
console, 97
Estimate, 140, 156
File, 97, 140
Help, 97, 140
look and feel, 97
Metrics, 31, 140
Metrics →Code/CPU , 140
Monitor, 29
Scope, 140
Sort, 140
Tree, 140
View, 140
visualizer, 140
messages
JMX viewer, 56
method
average exclusive clock times, 143
average exclusive CPU times, 142
average inclusive clock times, 143
average inclusive CPU times, 143
call count, 140
callers, 140
created objects, 145
exceptions thrown, 156
excessive compilation, 46
excessive object allocation, 44
exclusive clock times, 141
exclusive CPU times, 141
helper, 119
high usage, 119
inclusive clock times, 142
inclusive CPU times, 142
locating all lock claims, 154
locating contested lock claims, 154
lock contention, 155
lock delay, 154, 155
looping as an indicator, 144
monitoring CPU time consumed by, 118
starvation, 143
method call count, 68
call graph tree, 141
example usage, 73
method compilation count
metrics, 134
method compilation frequency
metrics, 135
Method hot spots
CPU usage, 39
metrics
access monitoring data for viewing, 103
Allocation Site Statistics, 161
analyzing profile data, 68
Creation Rate, 160
Cumulative Allocation, 159
Current Live Heap Objects, 129
derived, 140, 154
disabled, 99, 140
Duration (Stop the World), 158
enable, 99, 140
garbage collection, 41, 43, 123
garbage collection duration, 124
Glance data, 170
Glance system call data, 174
heap monitor, 43, 122
Heap Usage After GC, 157
how sorted, 68
Java Method HotSpots, 118
load data for viewing, 137
loaded classes, 47, 135
lock contention, 133
menus, 98
method compilation count, 134
method compilation frequency, 135
Multiple User-Defined for GC analysis, 168
naming GC data files, 85
209