Rob Scott has pointed you in the right direction. Worth emphasizing is that CP-SU ratios are most useful for botionally 'scientific' , CP-intensive applications.
Many 'business' applications are I/O-bound, some of them--MFUs are the classic example--to the extent that shrinking CP processing to zero has little measurable effect upon residence time. In I/O bound situations CP-SU ratios may be irrelevant or, worse, misleading. This old distinction is often lost sight of here because mainframe 'scientific' processing does not figure much in our discussions. It remains important. More generally, useful performance analysis requires years of experience with a platform, its software, the use of appropriate measurement software, and considerable statistical prowess. Absent this skill set, it is easy to make a fool of oneself and all but impossible to make useful contributions. John Gilmore, Ashland, MA 01721 - USA ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
