The discussion on high speed buffers and internal cache misses is right on target. I've got a set of benchmarks that are plain vanilla COBOL programs - no DB2, or anything. One of them steps through 8 tables of 16 MB each (hopefully not your typical COBOL program). On a 2094-717, that program will run in 60 seconds of CPU time when the CEC is 50% busy, 180 seconds of CPU time when the CEC is 95% busy. Other programs using less memory have more stable CPU times, but even with a program using 7MB, CPU times doubled when the CEC got up to 98%. If anyone wants to send me an email off line, I can send you an Excel showing the numbers I've seen.
Marty Wertheim Mainframe Performance Management 972-245-4632 This communication (including attachments) is confidential and protected from disclosure. It is intended only for the addressee. If you are not the intended recipient, you may not copy, disclose, or distribute this message to anyone else; any such actions may be unlawful. If you have received this communication in error, please contact the sender of the message to inform him or her of the error and permanently delete this e-mail (including attachments) from your computer 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
