Responding all the way back to Mark Ristvedt's original post in this thre ad:
Mark, do you have any data showing how busy your paging system was during or just prior to the hang / slowdown period? For that problem to be address ed by VM64269 and VM64297, there would have to be substantial and unusually high paging activity right before or during the problem period. - Bill Holder, IBM Endicott, z/VM Development and Service
