| Usage: jcmd <pid | main class> <command ...|PerfCounter.print|-f file> | |
| or: jcmd -l | |
| or: jcmd -h | |
| command must be a valid jcmd command for the selected jvm. | |
| Use the command "help" to see which commands are available. | |
| If the pid is 0, commands will be sent to all Java processes. | |
| The main class argument will be used to match (either partially | |
| or fully) the class used to start Java. | |
| If no options are given, lists Java processes (same as -l). | |
| PerfCounter.print display the counters exposed by this process | |
| -f read and execute commands from the file | |
| -l list JVM processes on the local machine | |
| -? -h --help print this help message |