On Wednesday, 06/17/2009 at 12:58 EDT, "Hughes, Jim" <[email protected]> wrote: > I?d like to trace all i/o, interrupts, etc for a 3490 tape drive. ... > My trace command is: > CP TRACE IO 181 CCW INS INT BOTH RUN > > I?ve used various other combinations of TRACE SIO and TRACE SSSCH and etc? > with no happiness. > > I can get the TSCH and SSCH commands to appear and nothing else. > > What can I do to get ALL the tape i/o for address 181 to show up?
What other I/O were you expecting? If the guest is in a TSCH loop, it typically won't get I/O interrupts. They will be drained by the TSCH. Alan Altmark z/VM Development IBM Endicott
