On Tue, 17 Feb 2009 17:52:49 -0500, Bill Planer <[email protected]> wrote:
>That is correct, Roy. I was not complaining about a sample exit. The exit >is mine and mine alone. I was complaining about supported macros to call >z/OS system services. You were also, I believe, presuming that you would be able to notice the performance difference between a BALR and something else (BASR, or whatever). If you had a tight loop of just that instruction and a few others perhaps you would be able to measure a difference. Probably not a meaningful one (as in that case you really should be reworking your application and running the instructions in-line rather than calling them), but you might be able to see it. On the other hand, with your RACROUTE example that one BALR is going to invoke a set of routines that will usually execute at least several thousand other instructions, possibly tens or hundreds of thousands, and you'll never notice any difference that might exist. You may have a different opinion, of course, but I believe there are a lot more things you could worry about than that one if you want to improve application or system performance. -- Walt Farrell, CISSP IBM STSM, z/OS Security Design ---------------------------------------------------------------------- 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
