Hi Kees, I'm following this thread. (Learning a lot doing this...)
Whare can I find more about 'phantom load' and 'capping pattern'? Didn't find these terms in de 2 WLM manuals you mentioned earlier: SA22-7602-19 z/OS V1R12.0 MVS Planning Workload Management SA22-7999-06 z/OS V1R12.0 Planning for Subcapacity Pricing (I am at R12, so I looked in the R12 manuals) Jan On Tue, Feb 12, 2013 at 4:00 PM, Vernooij, CP - SPLXM <kees.verno...@klm.com > wrote: > Yes, LPAR Clusters are IRD managed groups of LPARs. > > Don't forget to read about Weight in relation to 'phantom load' and > 'capping pattern', to avoid erratic Lpar performance. > > I always like to have a monitor telling what is going on in the system, so > I will not be surprised by angry telephone calls and have no clue where to > start looking. I use Mainview, I don't know RMF, but it probably also > displays the 4HrRA, the current LPAR utilization and the status of > softcapping, so you know why the system is doing what it is doing. > > HTH, > Kees. > > > -----Original Message----- > From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On > Behalf Of R.S. > Sent: Tuesday, February 12, 2013 15:36 > To: IBM-MAIN@LISTSERV.UA.EDU > Subject: Re: Defined capacity > > "To enable the WorkLoad Manager (WLM), select Enable workload manager. > Selecting WLM from one processor details automatically selects WLM from > the other processor details and conversely. Specify the minimum and maximum > processing weights. Change LPAR management weights based on customer > policies and current work loads. " > > Indeed, to enable WLM I have to check "Enable WLM". I wouldn't know that! > Of course there is no explanation what does it mean "enable WLM". WLM is > enabled on every z/OS image and cannot be disabled. So, there must be some > other explanation of the words above. IRD? No clue about IRD. > > > However I found "WLM checkbox" in the chapter about IRD: > "For each logical partition that will participate in LPAR weight > management, do the following: > > - Make sure that "Initial Capping" is turned off. WLM cannot > manage the weight of a logical partition that is capped. > > - Enter the initial processing weight. This becomes the logical > partition's weight when it is first IPLed. > > - Enter the minimum and maximum weights. These set the lower and > upper limits for the weights that WLM will assign to the logical partition. > > - Check the "WLM Managed" box. This is the final step in > activating LPAR weight management." ---> THAT'S THE CHECKBOX! > > > > BTW: I never used IRD for simple reason: lack of sysplex. > > > So, to my knowledge: > WLM checkbox - used only for IRD, leave unchecked otherwise. > Defined Capacity - simply put non-zero value, uncheck Initial Capping on > CP, zIIP, zAAP. > > > Thank you Kees! > -- > Radoslaw Skorupka > Lodz, Poland > > > P.S. > I just found another "helpful" explanation: > Image Pforile, Options tab: > > "CP management cluster name > > The name specified for the CP management cluster. " > > I suspect it's also IRD related stuff. > > > > > > > > > W dniu 2013-02-12 14:58, Vernooij, CP - SPLXM pisze: > > Radoswaw, > > > > One to the manuals has a chapter IRD, I think you will find there that > the WLM checkbox triggers IRDs weight management. > >>From my experience: forget IRD on modern machines. CPU management is > disabled by Hiperdispatch and weight management and softcapping do not > cooperate. > > > > Kees. > > > > > > -----Original Message----- > > From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] > On Behalf Of R.S. > > Sent: Tuesday, February 12, 2013 14:30 > > To: IBM-MAIN@LISTSERV.UA.EDU > > Subject: Re: Defined capacity > > > > W dniu 2013-02-12 13:50, Vernooij, CP - SPLXM pisze: > >> Check this paper too: > >> http://www.ibm.com/common/ssi/fcgi-bin/ssialias?infotype=SA&subtype=WH > >> &appname=STGE_ZS_ZS_USEN&htmlfid=ZSW03077USEN&attachment=ZSW03077USEN. > >> PDF > >> > >> kees. > > > > Kees, > > Thank you for quick response. Actually I have 3 open documents on my PC, > exactly the same which you mentioned ;-) I found and answer for Q1 (MSU as > a unit), which I was 99% sure. > > > > Unfortunately I found no explanation about WLM checkbox. From your > response I assume I should leave it unchecked, since I don't use IRD. > > > > Regarding Q3 - I found that Initial Capping on any processor-type tab > gives the same result - it disables WLM checkbox. So I assume, I shouldn't > use Initial Capping for any CP type, including zIIP. > > > > > > BTW: General observation. It is typical for IBM - Software manuals avoid > describing any details about hardware panels, while H/W manuals do not > describe the meaning of the fields and panels. > > > > -- > > Radoslaw Skorupka > > Lodz, Poland > > > > > > > > > > > > > > -- > > Treść tej wiadomości może zawierać informacje prawnie chronione Banku > przeznaczone wyłącznie do użytku służbowego adresata. Odbiorcą może być > jedynie jej adresat z wyłączeniem dostępu osób trzecich. 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