You are posting to both the IBMMAIN group as well as CICS.  So I will
comment on both.

I am not clear what your questions are really asking, so instead, I will
give a brief explanation of zIIP and some of the workload that can go to it.

So long as your CEC is a z9 or above and the operating system is z/OS V1.6
and above, your workload can make use of the zIIP engine.

The zIIP was designed so that a program can work on z/OS to have all or a
portion of its enclave Service Request Block (SRB) work directed to the
zIIP..  This is a function created by IBM to drive certain type of work to
the zIIP - mainly enclave SRB workload.  When IBM introduced the zIIP it was
created to be an engine that would run at full speed, even on kneecapped
processors, and didn't count against capacity-based software licenses.  DB2
does a large part of its work in the zIIP.  DB2 10 makes even more use of
zIIP.

zIIP is designed so that the enclave SRB is the unit of work eligible to be
dispatched onto the specialty engine Workload manager ([[WLM]]) has been
enhanced so when DB2 configures an enclave, DB2 can tell WLM whether this
SRB should be scheduled to the zIIP. Utilization will be transparent to the
application. The application will have no idea if part of its work is being
run on the zIIP specialty engine or on a general purpose processor. All of
this will be accomplished while keeping overhead at a minimum.  Regardless
of where the workload originated, the portion of the work that will run on
the specialty engine verses a general purpose processor.  The enclave SRB
interface can also be taken advantage of by ISV's.

The Resource Measurement Facility (RMF) provides information on specialty
engine usage to help you identify when to consider purchasing a specialty
engine or adding more specialty engines. Also, SMF Type 72 records contain
information on specialty engine usage and fields in SMF Type 30 records let
you know how much time is spent on specialty engines, as well as how much
time was spent executing specialty engine eligible work on standard
processors. For more details about the new RMF support for specialty
engines, refer to the z/OS MVST Initialization and Tuning Reference

So, this means that DB2, IMS and some ISV work can be directed to a zIIP.
The RMF function (or CMF) will provide reporting on zIIP usage. 

Now there is in the SYS1.PARMLIB dataset a parameter called PROJECTCPU which
can tell you what workload might go to a zIIP.  You can then create reports
with RMF using this information.

http://www-03.ibm.com/support/techdocs/atsmastr.nsf/WebIndex/TD103548


So what I would like to know is what is the intent of knowing what is
running on the zIIP?  Are you trying to determine if you have enough zIIP
engines?  Or is there something else?  What type of reporting are you
looking to create?  Are you trying to see what programs run how much of the
work on the zIIP?  More details on what you are specifically looking for
will help in providing a more accurate answer.

But if you are trying to redirect work it may not work.  

I will direct you to this older doc from WSC on zIIP.  It may help you with
your questions.  The author Kathy Walsh is excellent in z/OS functions.

http://www-03.ibm.com/support/techdocs/atsmastr.nsf/WebIndex/PRS2123
http://www-03.ibm.com/support/techdocs/atsmastr.nsf/WebIndex/PRS2745



Lizette


> -----Original Message-----
> From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On
Behalf
> Of Benjamin White
> Sent: Thursday, October 04, 2012 1:31 PM
> To: IBM-MAIN@LISTSERV.UA.EDU
> Subject: Identify us of Enclave and ZIIP
> 
> After someone read an article in CMG and ran reports and displayed
enclaves in SDSF
> we see enclaves we did not expect.
> 
> How can we identify the component or application that uses an enclave?
> 
> How can we identify the ZIIP eligible feature that is using the ZIIP
processor?
> 

----------------------------------------------------------------------
For IBM-MAIN subscribe / signoff / archive access instructions,
send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN

Reply via email to