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| - | == Java 6 == | ||
| - | There may be different options for each type of Java installed. The commands listed below are known to work with the Java 6 JDK. | ||
| - | <table border=3 cellspacing=3 cellpadding=3 align=center> | ||
| - | <tr> | ||
| - | <th>Command</th> | ||
| - | <th>Arguments</th> | ||
| - | <th>Description</th> | ||
| - | </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> | ||
| - | <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> | ||
| - | </tr> | ||
| - | <tr> | ||
| - | <td><font face=monospace>-l -F process-id#</font></td> | ||
| - | <td>Force a stack dump when ''jstack'' isn't responding</td> | ||
| - | </tr> | ||
| - | </table> | ||
| - | * '''jmap''' - This command will then dump the memory map of the target process-id# to an hprof file within the current directory (or specified directory if you expand on 'filename'). | ||
| - | * '''jstack''' - This command will then take a thread dump of the java process specified and dump it to the console. You may want to consider redirecting this output to a file with the ''>'' modifier. | ||
| - | == Java 7 == | ||
| - | There may be different options for each type of Java installed. The commands listed below are known to work with the Java 7 JDK. | ||
| - | <table border=3 cellspacing=3 cellpadding=3 align=center> | ||
| - | <tr> | ||
| - | <th>Command</th> | ||
| - | <th>Arguments</th> | ||
| - | <th>Description</th> | ||
| - | </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> | ||
| - | <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> | ||
| - | </tr> | ||
| - | <tr> | ||
| - | <td><font face=monospace>-l -F process-id#</font></td> | ||
| - | <td>Force a stack dump when ''jstack'' isn't responding</td> | ||
| - | </tr> | ||
| - | </table> | ||
| * '''jmap''' - This command will then dump the memory map of the target process-id# to an hprof file within the current directory (or specified directory if you expand on 'filename'). | * '''jmap''' - This command will then dump the memory map of the target process-id# to an hprof file within the current directory (or specified directory if you expand on 'filename'). | ||
| * '''jstack''' - This command will then take a thread dump of the java process specified and dump it to the console. You may want to consider redirecting this output to a file with the ''>'' modifier. | * '''jstack''' - This command will then take a thread dump of the java process specified and dump it to the console. You may want to consider redirecting this output to a file with the ''>'' modifier. | ||
