On Thursday, 11/13/2008 at 01:20 EST, "Schuh, Richard" <[EMAIL PROTECTED]> wrote: > Yesterday, we were running a test using 17 z/TPF virtual machines, 3GB each. > This was in addition to the normal load on the system. During the test, which > was not moving along very quickly, nothing was, I noticed that our page packs > were 100% allocated, up from the usual 10%. This stood out as a smoking gun, > verified by watching the performance improve as each of the ids in the test > logged off. I presume that this should have been expected; however, other > matters have kept us so busy that we did not do the math. I imagine that the > one way to avoid this type of problem, we expect a peak of approximately 150 > concurrent z/TPF systems in the coming year, is a massive injection of paging > DASD. Is this the only answer or are there any other steps that we can take to > help?
Make sure your dasd subsystem is up to the task, using your fave perf monitor to keep an eye on I/O response times. Alan Altmark z/VM Development IBM Endicott
