Under the help section of the "DA" command, after the brief descriptions of the
columns, there is an appendix section for detailed information on certain
sections.
It looks something like this :
For more information, select a topic by number:
1 - Address space positions
2 - Swap out reason codes
3 - Server values
4 - Displaying alternate fields
5 - Changing the colors of fields
6 - Changing the order of fields
7 - CPU and SIO fields
8 - Scaling and abbreviations for values
Choosing option 7, leads to several help panels describing in detail where SDSF
sources the information and the calculations involved in showing the data, for
example :
CPU-Time and ECPU-Time columns: SDSF obtains the values for
these columns from RMF, as follows:
CPU-Time = ASCBEJST + ASCBSRBT + ASSBASST (source field R791TCPU)
ECPU-Time = ASCBEJST + ASCBSRBT + ASSBPHTM (source field R791TCPC)
where:
ASCBEJST is elapsed job step time
ASCBSRBT is accumulated SRB time
ASSBASST is the CPU time consumed by preemptible class SRBs
running on behalf of this address space, in milliseconds
ASSBPHTM is the CPU time consumed by preemptible class SRBs
running in this address space, in milliseconds (threads
plus enclaves)
GCP-Time, zAAP-Time and zACP-Time are not normalized.
SDSF obtains the values for these columns from RMF:
GCP-Time source field is R791TCPU
zAAP-Time source field is R791TIFA
zACP-Time source field is R791TIFC
zAAP-NTime is normalized to the slower CP, to facilitate
comparing values. The normalization uses fields from
RMF, as follows:
R791TIFA x R791NFFI
-------------------
256
..etc etc
Rob Scott
Rocket Software
-----Original Message-----
From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> On Behalf Of
Seymour J Metz
Sent: Monday, March 4, 2019 5:10 PM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Re: CPU time and zIIP
The last time that I looked SDSF did not document the actual meanings of all of
the fields that it displayed. A lot of these discussions could go away if IBM
spelled out the in SDSF documentation the actual meaning of each "CPU" field
instead of using ambiguous boilerplate language.
--
Shmuel (Seymour J.) Metz
https://nam01.safelinks.protection.outlook.com/?url=http:%2F%2Fmason.gmu.edu%2F~smetz3&data=02%7C01%7CRScott%40ROCKETSOFTWARE.COM%7Ca18442b199c54a67875908d6a0ea1a7a%7C79544c1eed224879a082b67a9a672aae%7C0%7C0%7C636873324684797715&sdata=VlY%2BTXoUkEyV15PpoJZQy0Na%2Ft2In%2BXQmpsNTkMe1Jo%3D&reserved=0
________________________________________
From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> on behalf of
Carmen Vitullo <cvitu...@hughes.net>
Sent: Monday, March 4, 2019 9:10 AM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Re: CPU time and zIIP
bad assumption on my part that SDSF show's CPU and zIIP percent for each
address space
zAAP-Time zACP-Time GCP-Use% zAAP-Use% SzAAP% SzIIP% P
Carmen Vitullo
----- Original Message -----
From: "Carmen Vitullo" <cvitu...@hughes.net>
To: IBM-MAIN@LISTSERV.UA.EDU
Sent: Friday, March 1, 2019 7:28:54 AM
Subject: Re: CPU time and zIIP
Carmen Vitullo
----- Original Message -----
From: "Peter Relson" <rel...@us.ibm.com>
To: IBM-MAIN@LISTSERV.UA.EDU
Sent: Friday, March 1, 2019 7:15:51 AM
Subject: Re: CPU time and zIIP
I'm obviously still not understanding what you think is amiss.
adding up the Gcpu time and Ziip time, to show all CP TIME but seeing that I
misread, misunderstood the doc and your previous responses and from the
statement below....as Gilda Radner would say....nevermind :( <snip> for me I'd
like to see SDSF's CPUtime to include all time, GCPU+IIP </snip>
We have already said that it does.
Peter Relson
z/OS Core Technology Design
is that true for CPU percent also?
thanks for provided my the clue by four I needed to get this into my thick
skull Carmen
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