OSI/FTAM Configuration and Management Manual

Monitoring FTAM Performance

OSI/FTAM Configuration and Management Manual—421944-001

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Reconfiguring the System to Improve Performance

To improve system performance, you can reconfigure your system in one of several

ways. For example, moving the swap file, adding processes, adjusting the maximum

number of associations, adjusting the maximum number of attaches, and changing the

processors in which your processes run all affect how your system performs. Section 2,

FTAM Management Environment, describes object attributes you can configure to

improve performance; Using Tandem FTAM Configuration Attributes on page 3-27

discusses how these attributes are related. The latter subsection also discusses variations

in process architecture configuration that can improve performance, such as the use of

multiple APLMGR subsystems. Finally, you might need to tune the performance of the

underlying OSI/AS subsystem(s) that provide services to your FTAM processes.

Moving the Swap File

Heavy system demands on the disk where the swap disk volume resides can cause

contention problems. To relieve these demands, use the ALTER PROCESS command to

move the swap file from one volume to another, less fully occupied disk.

For example, you could use a command such as the following to change the location of

the swap file to the volume $DATA:

ALTER PROCESS $AMGR.#FTAMR.FTR1, SWAP $DATA

For more information on modifying PROCESS attributes, see Changing Process

Configurations on page 3-58.

Detecting the Need for Additional Processes

To increase system throughput, it might be necessary to add one or more initiator or

responder processes. The following subsections describe the conditions under which you

might need to add processes to your subsystem.

Adding Initiator Processes

To increase the throughput of your FTAM applications, you might need to add one or

more initiator processes. The number of current associations for an initiator process is

equal to the number of subdevices for that initiator, displayed by the NAMES SU

command. If the number of current associations almost equals the maximum number of

associations (as displayed by the INFO PROCESS command), you can add another

process.