On Tue, 22 Nov 2005 15:22:40 -0500, Binyamin Dissen
<[EMAIL PROTECTED]> wrote:
>On Tue, 22 Nov 2005 14:34:46 -0500 "Schramm, Rob" <[EMAIL PROTECTED]>
wrote:
>
>:>Does anyone know how much overhead is introduced by a subsys that is not
>:>used on a system?
>
>:>For example.. if I have
>:>1)10 subsys (same on all systems),
>:>2)10 production (db2, mq etc)
>:>3)20 test subsystems (more db2 and mq)
>
>:>What is the impact of having a single IEFSSN00 that contains all of the
>:>subsystems v.s. separating it out somewhat?
>
>A small amount of CSA.
>
>And extra code path for anything that runs the SSCT chain.
>
All broadcast SSI requests, which include WTO, command, and task
termination processing, run the entire SSCT chain. Having unused
subsystems defined slows down this process. Only directed SSI requests -
those sent to a particular named subsystem - use a hash table lookup.
Bill Neiman
z/OS Development
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