Greetings All,

I'm wondering if anyone here has any experience with the ZAAPZIIP feature of 
z/OS 1.11 yet.

We know not all zIIP-eligible work is dispatched to a zIIP engine (about 50% of 
DB2 9 DDF work if what I've read is correct).  If one has only zIIP engines and 
uses the ZAAPZIIP option on z/OS 1.11 is the same "penalty" applied or will all 
zAAP-eligible work be dispatched to the zIIP engines.

We have one zAAP engine now and are looking to upgrade our CPU to a z10 and add 
a zIIP.  We're wondering if we'd be better off putting two zIIPs on (no zAAP) 
and using ZAAPZIIP=YES.  We wouldn't want to do it this way if there is a 
"penalty".

Current zAAP usage is 30-40% in peak hours on a z9.  zIIP-eligible work looks 
like it will only save us 3-6% of our GP CPU but we're expecting growth in DDF 
processing.


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