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NAME

       etop - Erlang Top is a tool for presenting information about Erlang
         processes similar to the information presented by "top" in UNIX.

DESCRIPTION

       Start  Erlang  Top  with  the provided scripts etop. This starts a hidden Erlang node that
       connects to the node to be measured. The measured node is specified with option -node.  If
       the  measured node has a different cookie than the default cookie for the user who invokes
       the script, the cookie must be explicitly specified with option -setcookie.

       Under Windows, batch file etop.bat can be used.

       When executing the etop script, configuration parameters can be specified as  command-line
       options,  for  example,  etop  -node  testnode@myhost  -setcookie  MyCookie. The following
       configuration parameters exist for the tool:

         node:
           The measured node.

           Value: atom()

           Mandatory

         setcookie:
           Cookie to use for the etop node. Must be same as the cookie on the measured node.

           Value: atom()

         lines:
           Number of lines (processes) to display.

           Value: integer()

           Default: 10

         interval:
           Time interval (in seconds) between each update of the display.

           Value: integer()

           Default: 5

         accumulate:
           If true, the execution time and reductions are accumulated.

           Value: boolean()

           Default: false

         sort:
           Identifies what information to sort by.

           Value: runtime | reductions | memory | msg_q

           Default: runtime (reductions if tracing=off)

         tracing:
           etop uses the Erlang trace facility, and thus no other  tracing  is  possible  on  the
           measured node while etop is running, unless this option is set to off. Also helpful if
           the etop tracing causes too high load on the measured node. With tracing off,  runtime
           is not measured.

           Value: on | off

           Default: on

       For details about Erlang Top, see the User's Guide.

EXPORTS

       start() -> ok

              Starts etop. Notice that etop is preferably started with the etop script.

       start(Options) -> ok

              Types:

                 Options = [Option]
                 Option = {Key, Value}
                 Key = atom()
                 Value = term()

              Starts etop. To view the possible options, use help/0.

       help() -> ok

              Displays the help of etop and its options.

       config(Key,Value) -> Result

              Types:

                 Result = ok | {error,Reason}
                 Key = lines | interval | accumulate | sort
                 Value = term()

              Changes the configuration parameters of the tool during runtime. Allowed parameters
              are lines, interval, accumulate, and sort.

       dump(File) -> Result

              Types:

                 Result = ok | {error,Reason}
                 File = string()

              Dumps the current display to a text file.

       stop() -> stop

              Terminates etop.