David - I am running exactly the same tsm and OS/390, but with mpthreading on. I haven't seen any problems caused by it. I turned it on at the suggestion of tsm level 2 support to fix a pmr, I don't remember what the problem was. I have just one processor, but level 2 assured me it would help anyway.
Bill At 03:10 PM 5/14/2002 -0400, you wrote: >We are running OS390/2.10 with TSM 4.2.1.9 currently we have MPTHREADING >set to NO. > I was considering changing it to yes. Has anyone had problems with the >MPTHREADING? >Also, what if any improvements can I expect? ---------- Bill Colwell C. S. Draper Lab Cambridge Ma.