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Table of Contents
About This Document.......................................................................................................11
1 Diagnostic and Monitoring Tools and Options........................................................13
1.1 HP-UX Java Tools and Options Tables............................................................................................13
1.1.1 Crash Analysis Tools...............................................................................................................13
1.1.2 Hung and Deadlocked Processes............................................................................................13
1.1.3 Fatal Error Handling...............................................................................................................14
1.1.4 Monitoring Memory Use.........................................................................................................14
1.1.5 Performance Tools...................................................................................................................15
1.1.6 Miscellaneous Tools and Options...........................................................................................15
1.1.7 JDK Tools Not Available on HP-UX........................................................................................16
1.2 Ctrl-Break Handler..........................................................................................................................16
1.3 Fatal Error Log (hs_err_pid<pid>.log).............................................................................................17
1.4 gcore................................................................................................................................................18
1.5 gdb...................................................................................................................................................18
1.5.1 Java Stack Unwind Features....................................................................................................19
1.5.2 gdb Subcommands for Java VM Debugging..........................................................................19
1.6 HPjconfig ........................................................................................................................................21
1.7 HPjmeter .........................................................................................................................................24
1.7.1 Static Data Analysis.................................................................................................................26
1.7.1.1 Using HPjmeter to Analyze Profiling Data.....................................................................26
1.7.1.2 Using HPjmeter to Analyze Garbage Collection Data....................................................28
1.7.2 Dynamic Data Analysis...........................................................................................................28
1.7.2.1 Using HPjmeter to Monitor Applications.......................................................................28
1.7.2.2 Connect to the Node Agent From the HPjmeter Console...............................................29
1.7.2.3 Set Session Preferences....................................................................................................30
1.7.2.4 Viewing Monitoring Metrics During Your Open Session...............................................32
1.7.2.5 Running the HPjmeter Sample Programs.......................................................................32
1.7.2.5.1 Sample Memory Leak Application.........................................................................33
1.7.2.5.2 Sample Thread Deadlock Application....................................................................34
1.8 HPjtune............................................................................................................................................35
1.9 hat....................................................................................................................................................36
1.10 hprof..............................................................................................................................................36
1.11 java.security.debug System Property............................................................................................37
1.12 JAVA_TOOL_OPTIONS Environment Variable............................................................................37
1.13 jconsole (1.5+ only)........................................................................................................................38
1.14 jdb..................................................................................................................................................39
1.15 jhat.................................................................................................................................................39
1.16 jps (1.5+ only).................................................................................................................................40
1.17 jstat (1.5+ only)...............................................................................................................................40
1.18 jstatd (1.5+ only).............................................................................................................................41
1.19 jvmstat Tools..................................................................................................................................41
1.20 -verbose:class.................................................................................................................................42
1.21 -verbose:gc.....................................................................................................................................42
1.22 -verbose:jni.....................................................................................................................................42
1.23 visualgc..........................................................................................................................................42
1.24 -Xcheck:jni .....................................................................................................................................45
1.25 -Xverbosegc....................................................................................................................................46
1.26 -XX:ErrorFile..................................................................................................................................47
1.27 -XX:+HeapDump and _JAVA_HEAPDUMP Environment Variable............................................48
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