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

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.

The following configuration parameters exist for etop.

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 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

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.