If I was reading 20,000 records I wouldn't give it a second thought. You could give it 96 buffers and read the entire thing into about 2.5 MB of memory. Restrict it to one buffer and have to do 96 reads. Big deal. (No, I wouldn't do the latter.) You probably wouldn't see much difference.
Tom Marchant On Fri, 26 Aug 2005 11:28:30 -0700, Charles Mills <[EMAIL PROTECTED]> wrote: >If you were reading from one QSAM DASD DCB and writing to another QSAM >DASD DCB -- let's say 20,000 133-byte records blocked half track -- >would you expect to see a noticeable performance improvement (elapsed >time and/or CPU time) from specifying a BUFNO greater than 5? What >number might you specify to optimize elapsed and/or CPU time without >"being ridiculous"? Any related considerations? > >Thanks, > >Charles Mills ---------------------------------------------------------------------- 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
