Re: Very Large Page Datasets (was ASM and HiperPAV)

percent of auxiliary storage must be available. Best regards, Don ** Don Deese, Computer Management Sciences, Inc. Voice: (804) 776-7109 Fax: (804) 776-7139 http://www.cpexpert.org ** At 04:29 PM 2/5/2012, you wrote: Paging (if you'll pardon the pun :-) ) Don Deese and wondering

Re: Question concerning CMF reporting of CPU Delay

with short response goals. This is one of the many factors that can cause periodic spikes of poor performance in such service class periods. Regards, Don ** Don Deese, Computer Management Sciences, Inc. Voice: (804) 776-7109 Fax: (804) 776-7139 http://www.cpexpert.org

Re: CPU capping is not working for one Lpar only on CEC?

You might have more luck if you check for 3.6% rather than 3%. The 3.6% is valid up through z/Enterprise (see Enforcement of processing weights in any of the PR/SM Planning Guides). Regards, Don ** Don Deese, Computer Management Sciences, Inc. Voice: (804) 776-7109 Fax: (804) 776-7139

Re: z196 sysplex question

via concurrent CPU upgrade, or 80, whichever is less. /snip ** Don Deese, Computer Management Sciences, Inc. Voice: (804) 776-7109 Fax: (804) 776-7139 http://www.cpexpert.org ** At 03:18 PM 8/20/2010, you wrote: On Fri, 20 Aug 2010 12:51:42 -0600, Steve Comstock st...@trainersfriend.com

Re: FC_? Channel Path Acronym

Hi Martin, Check out OA13396: FICON INCOMPLETE STATUS FOR FICON CHANNEL ON DISPLAY MATRIX COMMAND IS NOT CLEARLY DOCUMENTED Best regards, Don ** Don Deese, Computer Management Sciences, Inc. Voice: (804) 776-7109 Fax: (804) 776-7139 http://www.cpexpert.org ** At 05:13 AM 4/21

Re: Data Areas for z/OS 1.10

and this will bring up a page with Contents. At the top of the page select the icon to download the Softcopy Reader book. Save the file. You can do the same thing for z/OS 1.11 by returning to the z/OS Elements and Features Publication page. Regards, Don ** Don Deese, Computer

Re: Can CICS region share more than one processor

Using JDBC and SQLJ in enterprise beans: special considerations in topic 8.9). If the application program does not issue many SQL calls, the performance benefits might not be as significant. /snip Regards, Don ** Don Deese, Computer Management Sciences, Inc. Voice: (804) 776-7109

Re: Can CICS region share more than one processor

or in the JVMPROFILE Resource Definition. There are, of course, limiting factors inherent in the environment (for example, CICS monitors the amount of available MVS storage and will not attach new TCBs from the JVM TCB pool if storage is severely constrained). Regards, Don ** Don Deese, Computer

Re: SMF70PMU question

regards, Don ** Don Deese, Computer Management Sciences, Inc. Voice: (804) 776-7109 Fax: (804) 776-7139 http://www.cpexpert.org ** At 12:57 PM 3/31/2009, you wrote: Can anyone confirm if the SMF70PMU parameter in the RMF TYPE70 records is in service units? If not, what are the units

Re: SMF70PMU question

Hi Jim, This is a count (the number of blocked dispatchable units being promoted during the interval). Best regards, Don ** Don Deese, Computer Management Sciences, Inc. Voice: (804) 776-7109 Fax: (8043) 776-7139 http://www.cpexpert.org ** At 12:57 PM 3/31/2009, you wrote: Can

Re: GRSPLEX vs CA MIM IM

. If money is really tight, perhaps Ring would be acceptable. I do suggest that Gray carefully review the considerations outlined in the MVS Planning: Global Resource Serialization document before making his decision. Don ** Don Deese, Computer Management Sciences, Inc. Voice: (804) 776

Re: Group Capacity Limit

for Al and give him a plug. Kind regards, Don ** Don Deese, Computer Management Sciences, Inc. Voice: (804) 776-7109 Fax: (8043) 776-7139 http://www.cpexpert.org ** At 08:01 AM 2/1/2009, you wrote: Errol, The best source for detailed,specific information about GCL is IBM, not IBM-Main

Re: z10 and HiperDispatch question.

%. A single medium can have 99%, but if the combined share of two mediums was more than 150%, then the algorithms would form one high and one medium. Regards, Don ** Don Deese, Computer Management Sciences, Inc. Voice: (804) 776-7109 Fax: (8043) 776-7139 http://www.cpexpert.org

Re: zIIP queue vs CP dispatch when zIIP is fully utilized

of specialty engines! There is no reason to have a specialty engine for performance reasons. As Normal wrote, specialty engines are a cost issue. Regards, Don ** Don Deese, Computer Management Sciences, Inc. Voice: (804) 776-7109 Fax: (8043) 776-7139 http://www.cpexpert.org ** At 06:45 PM

Re: Page Dataset Growth and DB2

Also, if you are running at DB2 Release 8.1 or above, take a look at whether your DB2 guy has specified page fixing for the DB2 buffer pools. Improper selection of which DB2 buffer pools to page-fix can suck up real memory and cause paging problems. Don ** Don Deese, Computer Management

Re: Setting up PR/SM for very small Capacity LPARs on Fast Processors

with SP5.1 (and is partially described on Linda's next foil). Don ** Don Deese, Computer Management Sciences, Inc. Voice: (804) 776-7109 Fax: (8043) 776-7139 http://www.cpexpert.org ** At 03:54 PM 9/23/2008, you wrote: On Tue, 23 Sep 2008 15:34:35 -0400, Knutson, Sam [EMAIL PROTECTED] wrote

Re: Display IEAOPT

have almost zero effect on SMF file size. Regards, Don ** Don Deese, Computer Management Sciences, Inc. Voice: (703) 922-7027 Fax: (703) 922-7305 http://www.cpexpert.com ** Elardus Engelbrecht [EMAIL PROTECTED] wrote in message news: [EMAIL PROTECTED]... [ This is a resend atttempt

Re: zAAP Eligible Work

in IEAOPTxx of z/OS V1R8 for additional possible specifications. Regards, Don ** Don Deese, Computer Management Sciences, Inc. Voice: (703) 922-7027 Fax: (703) 922-7305 http://www.cpexpert.org ** At 11:42 PM 4/12/2007, you wrote: Something else to consider are two IEAOPTxx parameters

Re: [z/OS v1.7] WLM Performance periods: durations vs. service units

concurrently in Period 1 (and thus have the potential for interfering with each other for access to a CPU). In an LPAR with multiple logical processors, this potential for interference decreases substantially (think queuing model effects). Regards, Don ** Don Deese, Computer Management

Re: I/O Retries

(and, of course, the assignment has no intelligence about the prospective activity among the channels). I have SMF data from some of my users that show 70-85% of I/O activity to a single SAP (with 3 SAPs available). Don ** Don Deese, Computer Management Sciences, Inc. Voice: (703) 922-7027 Fax

Re: LPAR utilization more important than MVS utilization?

even though once we understand the meaning, the metric is as clear as CPU Busy). For that matter, CPU Busy in LPAR mode has its own share of problems. ;-) Don ** Don Deese, Computer Management Sciences, Inc. Voice: (703) 922-7027 Fax: (703) 922-7305 http://www.cpexpert.org ** At 08

Re: IBM Paper on Performance Impacts of Using Shared ICF CPs

ICFs, even in a test environment, and you probably should NOT use shared ICFs in a production environment. Regards, ** Don Deese, Computer Management Sciences, Inc. Voice: (703) 922-7027 Fax: (703) 922-7305 http://www.cpexpert.org ** At 10:13 AM 2/6/2006, you wrote: Re. http://www

Re: How is work dispatched on zAAPs (was: Billing for SRB time)

because I talked about the changes to zAAP management with z/OS V1R7 and with z9 109. Regards, Don ** Don Deese, Computer Management Sciences, Inc. Voice: (703) 922-7027 Fax: (703) 922-7305 http://www.cpexpert.org ** At 03:16 AM 1/20/2006, you wrote: Why do you say that the overhead

Re: Billing for SRB Time

Pool, IFL Pool, and IFA Pool). Regards, Don ** Don Deese, Computer Management Sciences, Inc. Voice: (703) 922-7027 Fax: (703) 922-7305 http://www.cpexpert.org ** At 05:12 PM 1/18/2006, you wrote: | Depends on what you mean by a real difference. z/OS

Re: CP offline and LPAR weights

100% of the 2 CPs not used by LPAR A. Thus the split of CPC capacity is 1/3 for LPAR A and 2/3 for LPAR B. Regards, Don ** Don Deese, Computer Management Sciences, Inc. Voice: (703) 922-7027 Fax: (703) 922-7305 http://www.cpexpert.org ** At 10:18 AM 11/9/2005, you wrote

Re: IRD (+)ve R (-)ve

** Don Deese, Computer Management Sciences, Inc. Voice: (703) 922-7027 Fax: (703) 922-7305 http://www.cpexpert.org ** At 11:18 AM 9/28/2005, you wrote: Sam, Here are the messages I posted with questions about what I was seeing and why. The last one has the most detail. http

Re: 1.5 Manuals, pdf's and bookshelves

organized in my standard method. I use FastLynx to keep my desktops and laptops current, so they all have the same BookManager (and pdf) documents. Regards, Don ** Don Deese, Computer Management Sciences, Inc. Voice: (703) 922-7027 Fax: (703) 922-7305 http://www.cpexpert.org ** At 09

Re: Disk I/O tuning still possible?

Kees This is a simple application of Erlang M/M/C model. With 4 servers at 50% busy, the probability is 0.1739130435 that all servers will be busy. Regards, Don ** Don Deese, Computer Management Sciences, Inc. Voice: (703) 922-7027 Fax: (703) 922-7305 http://www.cpexpert.org

Re: IRD Short Engine Effect at 100% CEC utilization

a CPC with a large number of slower CPs, or one with a small number of fast ones? The answer to this question depends on your specific workload and objectives. Hope this helps, Don ** Don Deese, Computer Management Sciences, Inc. Voice: (703) 922-7027 Fax: (703) 922-7305 http