When sending or receiving messages using the remote API facility, the response may be deteriorated and the performance may be degraded depending on the length of the messages to be exchanged. The remote API facility provides the parameters for tuning the performance to improve the response. By using these parameters, increase the socket window size and make the send and receive retry interval shorter. By increasing the window size and shortening the interval you can improve the response.

The users must determine whether or not to apply the parameters for tuning the performance according to the system requirements. To set the performance tuning parameters, perform the following procedure:

1. Specify the following operands of the RAP-processing listener service definition:
   
   • rap_max_buff_size operand
   • rap_io_retry_interval operand
   • rap_sock_count operand
   • rap_sock_interval operand
   • rap_connect_retry_count operand
   • rap_connect_retry_interval operand
   • rap_listen_backlog operand
   For details about the operands, see the manual OpenTP1 System Definition.
   
2. After specifying the operands, execute the rapdfgen command.