Johnny,
you are watching a very normal behavior. There is no unlimited supply of
anything. Once the OP-sys is full (whatever resource you look at) the
next level will have queues that build up. And maintaining these queues
takes time.
Very simple model:
Once your I/O rate is higher than the number of actuators on that disk
it will queue up on the controller
Once the aggregate I/O rate is higher than what the controller can
handle it will queue up on a higher level
this continues up thru the op-sys till your CICS is hit.
Also- handling queues in CICS (while waiting for I/O) is not free and a
longer queue is more work that a short queue.
Martin
----------------------------------------------------------------------
For IBM-MAIN subscribe / signoff / archive access instructions,
send email to [email protected] with the message: INFO IBM-MAIN
