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(→*nix)
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(→Dump Table)
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| - | = Dump Table = | ||
| - | <table border=2 cellspacing=2 cellpadding=2 align=center> | ||
| - | <tr> | ||
| - | <th>OS</th> | ||
| - | <th>Command</th> | ||
| - | <th>Arguments</th> | ||
| - | <th>Description</th> | ||
| - | <th>Version</th> | ||
| - | </tr> | ||
| - | <tr><td align=center rowspan=7>*nix</td><td align=center rowspan=1>'''jstack''' ''(Thread Dump)''</td><td><font face=monospace>-m process-id#</font></td><td>Prints mixed threads (Java & C++) on a specified process ID#</td><td align=center rowspan=4>5</td></tr> | ||
| - | <tr><td align=center rowspan=3>'''jmap''' ''(Heap Dump)''</td><td><font face=monospace>process-id#</font></td><td>Performs shared object mappings on the specified process ID#</td></tr> | ||
| - | <tr><td><font face=monospace>-heap process-id#</font></td><td>Performs a heap dump on the specified process ID#</td></tr> | ||
| - | <tr><td><font face=monospace>-histo process-id#</font></td><td>Prints the histogram for the specified process ID#</td></tr> | ||
| - | <tr><td align=center rowspan=2>'''jstack''' ''(Thread Dump)''</td><td><font face=monospace>-l process-id#</font></td><td>Prints long listing information (locks, synchronizers, etc.) on a specified process ID#</td><td align=center rowspan=3>6, 7</td></tr> | ||
| - | <tr><td><font face=monospace>-l -F process-id#</font></td><td>Force a stack dump when ''jstack'' isn't responding</td></tr> | ||
| - | <tr><td align=center rowspan=1>'''jmap''' ''(Heap Dump)''</td><td><font face=monospace>-dump:format=b,file=''filename'' process-id#</font></td><td>Dumps the memory map of the target process-ID# to an '''hprof file''' within the current directory (or specified directory if you expand upon ''filename'')</td></tr> | ||
| - | </table> | ||
| - | * '''jmap''' - This command will then dump a summary of the current memory map to the console. While not as sophisticated as the later versions of java, it still provides some rudimentary functionality. | ||
| - | * '''jstack''' - This command will then take a thread dump of the java process specified and dump it to the console. It will only provide both Java & C/C++ threads during the trace. You may want to consider redirecting this output to a file with the ''>'' modifier. | ||
| = *nix = | = *nix = | ||
| This section lists methods to obtain dumps on *nix-based platforms | This section lists methods to obtain dumps on *nix-based platforms | ||
