APSYPAGE parameter

APSYPAGE is obsolete as of 7.6

Summary

Default value

0

Parameter type

System

Where set

On User 0's parameter line

Related products

All

Introduced

Model 204 V5.1

Description

Activates the APSY Precompiled Procedures in Storage feature by specifying a number of 4K operating system pages.

For IBM z/OS systems only.

APSYPAGE was implemented to take advantage of the MVPG machine language instruction which moved an entire hardware page (4K) with a single instruction and which, at the time, had significantly better performance than the stream-oriented moves used by standard APSY load. However, recent hardware models actually seem to have better performance for the stream-oriented moves.

Therefore, it is now recommended that customers who have been using the APSYPAGE parameter disable the APSYPAGE feature by setting APSYPAGE to 0. Then set the RESPAGE parameter to the former value of APSYPAGE.

The units for both RESPAGE and APSYPAGE are 4096 (hardware page size) bytes.