HP UX SNAplus2 manual Maximum window size, Session timeout, Maximum RU size

Configuring APPC Communication

Defining Modes and Classes of Service

The initial setting for the number of request units (RUs) that the local LU can receive before it must send a pacing response to the remote LU. This can be safely set to 4.

Setting it higher can improve performance in some circumstances, but doing so also increases memory usage.

Maximum window size

The maximum number of request units (RUs) that the local LU can receive before it must send a pacing response to the remote LU.

This value is optional. If it is not supplied, the maximum receive pacing window is unlimited. If a value is supplied, it is used to limit the size of the receive pacing window for adaptive pacing adaptive pacing . If adaptive pacing is not used, this value is ignored.

The pacing window can be from 0 through 32767 bytes. A value of 0 specifies an unlimited window.

If the adjacent node supports only fixed pacing, these values determine the fixed-pacing window size; but the adjacent node can still set a window size through negotiation. If the adjacent node uses adaptive pacing, these values set the initial window size.

Session timeout

The number of seconds (0 - 65535) that an LU 6.2 session using this mode must be inactive before it can time out. Changing this value affects only sessions that are activated using this definition (not sessions that are already active).

If you use a value of 0, sessions are timed out as soon as they become free.

Maximum RU size

A range that determines how much data is buffered before being sent to the partner LU.

The upper limit can be from 256 through 62440 bytes. You can safely set the upper limit to 1024 bytes. Setting it higher can improve performance in some circumstances, but doing so also increases memory usage.

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