It costs nothing to use the CPU, other than the electrical power it consumes and the heat load on the building HVAC. It just sits there.
But there are costs associated with making the CPU usable. Software licensing costs, support personnel costs, etc. Some of the software costs may be keyed to how much the CPU is used. But, then, use of the CPU also produces income directly or indirectly. Some add up the TCO (total cost of ownership or operation) and then prorate that across the user community using some arbitrary metric such as CPU seconds. Some prorate on transaction counts. Some do some combination thereof. Even then, the foundation of any such calculations would be a management decision to consider the operation a cost center or a profit center. For example, a really good measurement of the TCO of a given box would include the electrical power and the heat load on the building HVAC. But that rarely happens because those are almost always different cost centers and therefore operate under different budgeting strategies. So, add up all the costs associated with a given box. That's the cost of having a CPU to use. But it costs nothing to actually use it. Some might even argue that there are tangible costs of -not- using the CPU. -----Original Message----- From: IBM Mainframe Discussion List [mailto:ibm-m...@bama.ua.edu] On Behalf Of Carson, Brad Sent: Tuesday, March 10, 2009 6:36 AM To: IBM-MAIN@bama.ua.edu Subject: Cost of CPU Time Hello IBM-Main'ers, I'm looking for some information on how to calculate the cost for using CPU. Our new performance management team is trying to come up with a calculation that can be used for multiple platforms. Those include zSeries, Unisys, pSeries, HP9000, and intel. Since I'm not allowed to access the Gartner site (due to $$), we're trying this the old fashioned way on our own. Any insight, tips, hints would be appreciated. Brad S. Carson Manager Mainframe Technical Support Laboratory Corporation of America Phone: 336-436-8294 Fax: 336-436-1033 email: cars...@labcorp.com ----------------------------------------- This e-mail and any attachments may contain CONFIDENTIAL information, including PROTECTED HEALTH INFORMATION. If you are not the intended recipient, any use or disclosure of this information is STRICTLY PROHIBITED; you are requested to delete this e-mail and any attachments, notify the sender immediately, and notify the LabCorp Privacy Officer at privacyoffi...@labcorp.com or call (877) 23-HIPAA / (877) 234-4722. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html NOTICE: This electronic mail message and any files transmitted with it are intended exclusively for the individual or entity to which it is addressed. The message, together with any attachment, may contain confidential and/or privileged information. Any unauthorized review, use, printing, saving, copying, disclosure or distribution is strictly prohibited. If you have received this message in error, please immediately advise the sender by reply email and delete all copies. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
