Allocate DASD Space and Placement
After activation of CA Allocate in production environment, batch users experience extended job runtimes when using ICEGENER and DFSORT for example.
Performance degration and extended runtime can be caused by LSAPCE calls in the ASR routine.
Release : 12.5
Component : CA Allocate DASD Space and Placement
Limit the number of LSPACE calls in the ASR routine for larger Data sets for example or replace LSPACE with DIF processing.
Following sample ASR code to use DIF in ALLOC, DEFINE, EOV, EOV_VSAM and EXTEND environments:
FILTLIST &DIFENVIR INCLUDE(AL*,D*,E*)
IF &VAMENVIR = &DIFENVIR THEN DO
SET &REDUCE_BY = 10
SET &MINIMUM_PERCENT = 10