Sends a message to the log.


function lr.log_message(  message  )


function lr.log_message(  message  )
Example: lr.log_messageMessage Functions


message The message to send to the log.

The lr.log_message function sends a message to the Vuser or agent log file (depending on the application), and not to the output window. You can use this function for debugging by sending error or other informational messages to the log file.

You can avoid overloading the network by using this function to send messages to the log file rather than sending messages to the Output window (with lr.error_message or lr.output_message). In a standalone program such as VuGen, lr.log_message sends the message to the viewer and output.txt.

To send a message to the output file, you must enable logging in the runtime settings, and select Always send messages. If you select Send messages only when an error occurs, there is no output from this function.

In the Vuser Execution log, this function does not list the location and line number from where the message was issued. To issue a message with those details, use lr.output_message



lr.log_message("a message") a message
lr.output_message("message") Action(4): message

Return Values

On success, returns the length of the message that was sent. On failure, returns a negative number.


Standard parameterization is not available for this function.