RE: Suggestion for improving loop performance

I goofed up the numbers it is .6ms and .4ms.

Thanks,
Ashwani Singh
Bank Solutions
Fiserv
Office:   +1 – 407 – 357 - 4550
Mobile: +1- 407 – 416 - 3918
Toll Free (Office): +1-811—407 -357-4550
www.fiserv.com

FORTUNE® Magazine’s 2014 World's Most Admired Companies
Facebook: Like Fiserv  ·  Twitter: Follow @Fiserv  ·  LinkedIn: Connect Fiserv  •  Careers: Join Fiserv

Please consider the environment before printing this e-mail


-----Original Message-----
From: Singh, Ashwani (Lake Mary)
Sent: Tuesday, May 19, 2015 2:18 PM
To: RPG programming on the IBM i (AS/400 and iSeries)
Subject: Suggestion for improving loop performance

Folks,

We are trying to process a 69 million records file which is taking 5 hours plus to load into another file. (We have Block *Yes specified for the input file (with 69M records) We need to bring the processing down for sure..

We are trying for the multithread as well..

There are two crucial loops that run in this single program and causing trouble.

The first loop takes round about .6 seconds/rec processed the other one .4 seconds.

Our file is a flat file and is | delimited ..

Loop 1
D ARRAY1 S 5 0 DIM(999)
C '|' SCAN DATA ARRAY1
C Eval X= 1
C Eval A= 0
C Dow ARRAY1(X) > 0
C Eval A+=1
C Eval X+=1
C ENDDO




Loop2
C DOW A < #Pipesreq (Number of pipes actually required) C Eval Fileds = %subst(fileds:1:%checkr(' ':Fileds)) + '|'
C eval A+=1
C ENDDO


Any suggestion will be highly appreciated..



Thanks,
Ashwani Singh