Pride? Maybe. But, a few have misinterpreted my comments. I didn't say don't optimise. I said why worry about a few instructions? Even inside a loop, one instruction would have have to be executed a great amount before it can/will impact MSU based costs. Also, it have to be executed consistently within a second for a 4-hour period to impact at all. - -teD - Original Message From: Peter Relson Sent: Tuesday, February 18, 2014 08:02 To: [email protected] Reply To: IBM Mainframe Discussion List Subject: Re: Branch (was: Performance question - adding)
>I have to ask: Why they big concern over a few instructions? > Optimisation of a few is not worth the effort these days. In my opinion, it's not "concern", it's pride. Surely all of us programmers like our code to be the best it can be, within reason. So it's probably less about optimizing existing code (unless it's in a loop) than about understanding what is best for your new code, when the development and test costs of the choices are basically the same. Peter Relson z/OS Core Technology Design ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send 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
