OnDemand User Group
Support Forums => z/OS Server => Topic started by: Nolan on May 16, 2019, 09:25:27 AM
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Good day,
We have upgraded to V10.1 from V9.5 in our test system and have found an almost 35% increase in processing time when using our banner Exit. There were no changes to the exit between V9.5 and V10.1, we recompiled using the new modules and see a drastic impact on throughput. Anyone else had a similar experience?
It is not a complex banner exit, we read the customer vars for some flags, convert some text to big letters, and push out Dist address info/Dist ID/Report ID/Jobname.
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Any chance there's an opportunity for optimizing your exit with different compiler options? I know in most C-language compilers, there's an 'optimization' option with different levels / functionality.
-JD.
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Using the exact options provided by IBM. I don't believe there is much we can change for the banner exit.
//COBOL2 EXEC PGM=IGYCRCTL,REGION=0M,PARM='DLL,LIST,MAP,OBJ,RENT,
// TRUNC(OPT),NOSEQ,XREF,EXP,THREAD,PGMN(LM)'
//LKED EXEC PGM=IEWL,COND=(4,LT),
// PARM='CASE=MIXED,COMPAT=ZOSV1R11,OPTIONS=OPTS'
...
//OPTS DD *
XREF
AMODE=31,MAP
RENT,DYNAM(DLL)
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Something to look forward to - Not. The ARSBANNER seems to be the worst part of the last couple of upgrades.