IBM Mainframe Discussion List <[email protected]> wrote on 02/05/2008 11:43:08 PM:
> I've been running VM more off than on since PLC 5 and I'm certain > that the behavior that I > referenced WAS in VM... at some point. But if you & Lynn Wheeler > say it isn't there now, > I'll believe you (unless/until I can prove you wrong, of course). > > But I know back in the VM/HPO or (maybe) early VM/XA days it was > true that VM put itself > into a tiny loop while it waited for work. The loop was in a > unique-to-VM PSW key so that > the hardware monitor (the "speedometer") could tell the difference > between work and wait. > > Or am I the only person who "remembers" that? > I remember hearing of that. I think it was called "Active Wait". Not the kind of thing you would want to do these days running under LPAR with shared CPs. Jim Mulder z/OS System Test IBM Corp. Poughkeepsie, NY ---------------------------------------------------------------------- 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
