PERFOPT parameter

Default value

X'00000000'

Parameter type

System

Where set

User 0 CCAIN parameters

Related products

Sirius Performance Enhancements, Sirius Performance Enhancements V2, and Sirius Performance Enhancements V3

Introduced

Before Sirius Mods 6.7

This is a bitmask parameter with 32 available bits. These bits are used to enable certain performance enhancements for Sirius Performance Enhancements customers. Many of the enhancements have been incorporated into the core Model 204 product, so the bits associated with these enhancements no longer have any effect (so can either be set or not).

The bits that still have an effect are:

X'00000800'

Optimizes LOGONENQ processing by maintaining a virtual storage hash table of logged on userids.