Peter (et al): If this is the case, and the decision is made to make these changes, contact me. I have access to a partner product that can modify your programs and batch processes automatically.
With Regards, Mitch McCluhan, Legacy Modernization Consultant www.lcmg.us -----Original Message----- From: Farley, Peter x23353 <[email protected]> To: IBM-MAIN <[email protected]> Sent: Mon, Nov 25, 2013 7:43 am Subject: Has anyone measured CPU savings using external SORT's vs internal (COBOL) SORT's? It has been suggested to management here that there could be potentially ignificant CPU savings from re-engineering application programs such that any ORT's are done in a separate step, so that a program with a single internal ORT would be broken up into a pre-SORT process followed by an external SORT of he massaged data followed by a post-process of the SORTed data. The first obvious factor is that SORT (at least Syncsort and DFSORT) are *far* ore efficient at I/O than any COBOL program can be. It is also obvious that he data volume would affect the relative CPU cost of the two methods, with mall volume possibly favoring an internal SORT and large(r) volume possibly avoring the external SORT process, FSVO "large(r)". Compressed (z/OS ompression, not disk subsystem compression) vs non-compressed data files could lso be another factor in CPU differences. Has anyone else been asked to measure whether this claim is true or not, and if rue where the "break" point in volume might be? TIA for any insight you can provide. Peter - This message and any attachments are intended only for the use of the addressee nd may contain information that is privileged and confidential. If the reader f the message is not the intended recipient or an authorized representative of he intended recipient, you are hereby notified that any dissemination of this ommunication is strictly prohibited. If you have received this communication in rror, please notify us immediately by e-mail and delete the message and any ttachments from your system. ---------------------------------------------------------------------- or IBM-MAIN subscribe / signoff / archive access instructions, end email to [email protected] with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
