The reason that processors are parked is because they are more or less not doing you any good (or, conversely, having them unparked would do less for you than having them parked). What I think of as "locality of reference" is the key to hiperdispatch. Having fewer processors each doing more, contrasted with more processors each doing less, can help with that.
If you don't like processors being parked, then adjust your LPAR weights, the number of processors assigned to your LPARs and whether or not those processors are dedicated to the LPAR or not. But don't turn off hiperdispatch unless you have a real reason too -- such as you don't like to get as much work done as you could. Peter Relson z/OS Core Technology Design ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
