Since it doesn't appear to have been mentioned, IBMs zCP3000 tool is useful for analyzing if a benefit would derive from using a ZIIP engine.
I ran one for a customer and for a DB2 z/OS workload,the benefit was apparent on a cost benefit basis. I believe that CA-Datacom will utilise a zIIP if present. On Fri, Nov 1, 2013 at 10:47 AM, Al Sherkow <[email protected]> wrote: > My analysis uses SMF data and is based only on public documentation of the > SMF data. I have to explain my analysis to customers and clients so > anything I might know under NDA is not useful in those circumstances. > > If some vendor(s), as Ed wrote are using CPU and it is not marked as zXXP > eligible, then SMF does not show it as eligible either and it is not used > in my analysis. This could lead to the analysis indicating the zXXP is not > saving enough $s to make it worthwhile; and this might be the wrong answer, > but it is the best answer given the data. > > The result might be that the analysis shows 1 or more zXXP engines would > provide value in your environment. Then, if a vendor marks more CPU usage > as eligible then the zIIP engines may run work not included in the analysis > and you'll still have eligible work running on GCPs. and as someone wrote > earlier in this thread not everything eligible runs on the zXXPs, so you'll > almost always have some eligible work that does not run on zXXPs. In this > case once the zXXP engine is installed the analysis can be done again, and > perhaps more adding more zXXPs is still valuable. > > My analysis may under-estimate the value of the zXXPs, but so far it has > not over-estimated the value. > > Al > I/S Management Strategies, Ltd. > +1 414-332-3062 > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to [email protected] with the message: INFO IBM-MAIN > -- Wayne V. Bickerdike ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
