For an MVS system that is
running in a non-dedicated PR/SM environment
or under VM, if you specify non-default values for SPINTIME, consider
the following facts:- The more processing power (CPU cycles) available to the system,
the less time it needs to resolve a spin loop.
- The less processing power available to the system, the more time
it needs to resolve a spin loop.
- Specifying a SPINTIME that is too low might cause premature excessive
spin conditions.
If your system is running in a logical partition that is
sharing central processing resources, and you want to use a SPINTIME
value of less than the default time (40 seconds), the BLWSPINR member
of SYS1.SAMPLIB contains an exec that can help you evaluate your spintime
requirements.