Usage: jstat -help|-options

       jstat -<option> [-t] [-h<lines>] <vmid> [<interval> [<count>]]

Definitions:

  <option>      An option reported by the -options option

  <vmid>        Virtual Machine Identifier. A vmid takes the following form:

                     <lvmid>[@<hostname>[:<port>]]

                Where <lvmid> is the local vm identifier for the target

                Java virtual machine, typically a process id; <hostname> is

                the name of the host running the target Java virtual machine;

                and <port> is the port number for the rmiregistry on the

                target host. See the jvmstat documentation for a more complete

                description of the Virtual Machine Identifier.

  <lines>       Number of samples between header lines.

  <interval>    Sampling interval. The following forms are allowed:

                    <n>["ms"|"s"]

                Where <n> is an integer and the suffix specifies the units as 

                milliseconds("ms") or seconds("s"). The default units are "ms".

  <count>       Number of samples to take before terminating.

  -J<flag>      Pass <flag> directly to the runtime system.