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etop(3erl)			     Erlang Module Definition			       etop(3erl)

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

DESCRIPTION
       etop should be started with the provided scripts etop and getop for text based and graphi-
       cal  presentation respectively. This will start a hidden erlang node which connects to the
       node to be measured. The measured node is given with the -node  option.	If  the  measured
       node  has  a different cookie than the default cookie for the user who invokes the script,
       the cookie must be explicitly given witht the -setcookie option.

       Under Windows the batch files etop.bat and getop.bat can be used.

       The following configuration parameters exist for the etop tool. When executing the etop or
       getop  scripts,	these  parameters  can be given as command line options, e.g. getop -node
       testnode@myhost -setcookie MyCookie .

	 node :
	   The measured node.
	   Value: atom()
	   Mandatory

	 setcookie :
	   Cookie to use for the etop node - must be the same as the cookie on the measured node.
	   Value: atom()

	 lines :
	   Number of lines (processes) to display.
	   Value: integer()
	   Default: 10

	 interval :
	   The 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 mea-
	   sured  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

       All  interaction  with  etop when running the graphical presentation should happen via the
       menus. For the text based presentation the functions described below can be used.

       See the user's guide for more information about the etop tool.

EXPORTS
       config(Key,Value) -> Result

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

	      This function is used to change the tool's configuration parameters during runtime.
	      The table above indicates the allowed values for each parameter.

       dump(File) -> Result

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

	      This function dumps the current display to a text file.

       stop() -> stop

	      This function terminates etop .

Ericsson AB				  observer 0.9.9			       etop(3erl)
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