> -----Original Message----- > From: IBM Mainframe Discussion List [mailto:[email protected]] On > Behalf Of Joel Wolpert > Sent: Saturday, August 08, 2009 12:33 PM > To: [email protected] > Subject: Re: z10 and overlapping/destructive moves > > Maybe I am confused, but is looks like this move is using .76% of the CPU > of the program. This is less than 1%. What does the section called (AFAIR) > most highly executed procedures look like.
This particular statement occurs in a subroutine that is 12.44% of the CPU time used in this application, the highest of any subroutine used. Anything that can be reduced here benefits the entire application. However, I have come to the same conclusion as Ed J. suggested, that changing the algorithm that now requires this MOVE will be a more fruitful approach than worrying about how to improve one statement. IOW, a strategic change rather than a tactical one. I have already been able to reduce both CPU and elapsed time in the application by over 30% by changing algorithms elsewhere, but the client is looking for 50% if I can figure out how to do it, hence the intense concentration on every large spike. This particular subroutine just has a whole lot of function to accomplish, and it's a tad harder to reduce the work to be done. Thanks for your help. Peter This message and any attachments are intended only for the use of the addressee and may contain information that is privileged and confidential. If the reader of the message is not the intended recipient or an authorized representative of the intended recipient, you are hereby notified that any dissemination of this communication is strictly prohibited. If you have received this communication in error, please notify us immediately by e-mail and delete the message and any attachments from your system. ---------------------------------------------------------------------- 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
