>>Gee... wasn't reduced preemption with MVS/ESA V5.1 (not MVS/SP 3.1)?
Yes. Unfortunately, it removed MTTW (except for DISCRETIONARY), so where I/O intensive workloads used to get in, when needed, since then they have to wait on CPU intensive ones. This wrecked havoc on our batch service when we went to goal mode in 1999. And, it can still cause problems! - Too busy driving to stop for gas! ---------------------------------------------------------------------- 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
