"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
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Treść tej wiadomości może zawierać informacje prawnie chronione Banku
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