Al,
Been a while .. Off the top, I'd say there's more than likely data24 modules. I do not think RMODE bears weight on where storage is obtained instead, if AMODE is 31, I think WS and TGT are above the line. >From a Strobe standpoint, I'd say, 'index' both, a DATA24 profile and a DATA31 profile and see where the time is being spent. Regards. Jim Thomas -----Original Message----- From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf Of Alan Schwartz Sent: Thursday, June 01, 2006 11:41 AM To: [email protected] Subject: Slower run time with DATA(31) COBOL Option Greetings group. We have a bit of a puzzlement here and we're hoping someone can shed a little light on this. We've got an application that is working on becoming 31-bit capable. We got involved when they had a program using more cpu than before. By equalizing the compile options and re-compiling changing only one option at a time we found that the slower program used DATA(31) and the faster program used DATA(24). All other Cobol options are the same and the files used are the same! We've sent listings to IBM but so far we haven't come to a resolution. IBM has compared the execution code between the two compiled versions of the main program and they are indicating that there is NO difference in the instructions executed. The IBM techie is indicating that he thinks programs that are being called by the main program may be the culprit. We've Strobed both runs but the results are confusing/misleading so we've sent them to Compuware (and IBM) for assistance in analyzing them (nothing back yet). All testing is on z/OS 1.4 with Enterprise Cobol 3.2. The only modules statically linked are LE routines and they are all RMODE ANY and AMODE(ANY/31). The main program does call a number of other modules which are all Amode(31) and a mix of Rmode ANY/24. Here is the Measurement Data section from a Strobe profile for the faster (DATA24) run: ----- MEASUREMENT STATISTICS ---- CPS TIME PERCENT - 34.18 WAIT TIME PERCENT - 65.82 RUN MARGIN OF ERROR PCT - 2.38 CPU MARGIN OF ERROR PCT - 4.07 TOTAL SAMPLES TAKEN - 1,700 TOTAL SAMPLES PROCESSED - 1,700 INITIAL SAMPLING RATE- 16.67/SEC FINAL SAMPLING RATE - 16.67/SEC SESSION TIME - 1 MIN 43.69 SEC CPU TIME - 0 MIN 41.21 SEC WAIT TIME - 1 MIN 1.36 SEC STRETCH TIME - 0 MIN 1.12 SEC and from the slower (DATA31) run: ----- MEASUREMENT STATISTICS ---- CPS TIME PERCENT - 40.22 WAIT TIME PERCENT - 59.78 RUN MARGIN OF ERROR PCT - 2.07 CPU MARGIN OF ERROR PCT - 3.26 TOTAL SAMPLES TAKEN - 2,245 TOTAL SAMPLES PROCESSED - 2,245 INITIAL SAMPLING RATE- 16.67/SEC FINAL SAMPLING RATE - 16.67/SEC SESSION TIME - 2 MIN 19.89 SEC CPU TIME - 1 MIN 20.43 SEC WAIT TIME - 0 MIN 58.21 SEC STRETCH TIME - 0 MIN 1.25 SEC Has anyone experienced an increase in cpu utilization by changing the DATA option? Does this sound reasonable? I'll be out this Friday so I won't be able to respond to subsequent questions asked tomorrow. Alan Schwartz Assurant Shared Business Services Lead Systems Programmer Phone: 651-361-4758 Fax: 651-361-5625 ************************************************************************ ************** This e-mail message and all attachments transmitted with it may contain legally privileged and/or confidential information intended solely for the use of the addressee(s). If the reader of this message is not the intended recipient, you are hereby notified that any reading, dissemination, distribution, copying, forwarding or other use of this message or its attachments is strictly prohibited. If you have received this message in error, please notify the sender immediately and delete this message and all copies and backups thereof. Thank you. ************************************************************************ ************** ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html The contents of this e-mail are intended for the named addressee only. It contains information that may be confidential. Unless you are the named addressee or an authorized designee, you may not copy or use it, or disclose it to anyone else. If you received it in error please notify us immediately and then destroy it. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
