I might be using old logic here, but I would respectfully disagree with this. You said that you have a dozen production CICS regions, so obviously you can spread the CICS work across multiple logical engines. I would check on how much CPU power is needed for your largest CICS region, and if that is (well) under the size of a single processor on the 5 engine machine I'd go for the 5 engines. The one thing that bothers me though is that you say you have CICS transactions that are single threaded. What do you mean by that? Do you have many CICS transactions that wait on another transaction to complete for some reason. That doesn't seem to be the best CICS programming technique to me. But then we've all run into bad application programming techniques that have to be dealt with.
Tom Kelman Enterprise Capacity Planner Commerce Bank of Kansas City (816) 760-7632 > -----Original Message----- > From: IBM Mainframe Discussion List [mailto:[email protected]] On > Behalf Of Bruce Richardson > Sent: Monday, December 22, 2008 9:15 AM > To: [email protected] > Subject: Re: Performance Question for your collective consideration > > Unless you can really spread the workload across the 5 engines, I would go > with the 3 engine machine to be able to satisfy the largest single > workload, > the production CICS LPAR. > > On the other hand, you could build a compelling case for holding back > resources; put the production system on the 5 engine machine, for now, and > at some point down the road switch to the 3 engine machine to get a > performance boast. > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to [email protected] with the message: GET IBM-MAIN INFO > Search the archives at http://bama.ua.edu/archives/ibm-main.html ***************************************************************************** If you wish to communicate securely with Commerce Bank and its affiliates, you must log into your account under Online Services at http://www.commercebank.com or use the Commerce Bank Secure Email Message Center at https://securemail.commercebank.com NOTICE: This electronic mail message and any attached files are confidential. The information is exclusively for the use of the individual or entity intended as the recipient. If you are not the intended recipient, any use, copying, printing, reviewing, retention, disclosure, distribution or forwarding of the message or any attached file is not authorized and is strictly prohibited. If you have received this electronic mail message in error, please advise the sender by reply electronic mail immediately and permanently delete the original transmission, any attachments and any copies of this message from your computer system. ***************************************************************************** ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
