OSI/FTAM Configuration and Management Manual

Monitoring FTAM Performance

OSI/FTAM Configuration and Management Manual—421944-001

5-10

Displaying Subdevice Statistics

During the course of daily system monitoring, a process may unexpectedly slow down.

To check the activities of a specific association, issue the STATS SU command and

monitor the number of ACSE and Presentation PDUs (APDUs) being sent to the TAPS

process and returned by it in support of the FTAM protocol. Sending a small number of

large PDUs is more efficient than sending a large number of smaller ones; therefore, if

the number of APDUs sent or received is large compared to the number of FTAM

operations performed by the application, you might be able to improve performance by

increasing PDU size. An application using the Tandem initiator can increase the size of

the PDUs it sends by increasing the size of the data elements sent in the

FTM_DATA_REQ_ procedure call. The Tandem responder automatically sends large

PDUs, so a large number sent by a Tandem responder might indicate a problem. The

size of PDUs received by a Tandem initiator or by a Tandem responder is controlled by

the remote application and may be adjustable in that application.

To monitor the activity for a subdevice associated with an example responder, issue the

following command:

STATS SU $FTR1.#ZF00002

This command returns the following display:

In this example, there has been one APDU sent and one APDU received in the elapsed

time between the last reset (10:21:32.271) and the time the command was issued

(10:23:19.301). The APDU counts include both ACSE and Presentation PDUs created

to support the FTAM protocol.

OSIFTAM Stats SU \NET.$FTR1.#ZF00002

Reset Time..... 03 Apr 1992, 10:21:32.271

Sample Time.... 03 Apr 1992, 10:23:19.301

APDUs sent......1D APDUs rcvd......1D