Terri,


The CPU% in the title line is always for the local system, regardless of the 
SYSNAME setting - this has always been the case.

You might be noticing the difference more because the DA data in 2.4 is 
collected centrally by the data gathering task in SDSFAUX, whereas in previous 
releases (including 2.3) the data was gathered by the client code. In both 
cases, however, the RMF sample that calculates the CPU% for the title line is 
different to the SDSF sample and variations will occur, especially on low to 
medium activity systems where the CPU consumption is not constantly high.

CPU% for both the system and for a specific address space can vary greatly over 
sub-second intervals.

The data gathering task in SDSFAUX still calls RMF for the underlying address 
space information.

Rob Scott

Rocket Software


From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> On Behalf Of 
Shaffer, Terri
Sent: Friday, June 26, 2020 12:35 PM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: SDSF CPU L/Z

EXTERNAL EMAIL



Does anyone else have this issue with the SDSF CPU Title CPU L/Z fields on 
reflecting the LPAR usage and not a SYSPLEX total now with z/OS 2.4?

On my z/OS 2.2 lpar, if I sort on CPU% the numbers match pretty closely to the 
Title bar numbers, This isn't the case on my z/OS 2.3 and z/OS 2.4 lpars.

I have checked my SYSTEM NAME and Filters and it seems internally its always 
using the lpar specific CPU %.

I know in SDSF 2.4 and I think also 2.3, they gather these number thru SDSFAUX 
instead of I think it was RMF.

Trying to figure out if this is a setup issue in my shop or a bigger issue?

Ms Terri E Shaffer
Senior Systems Engineer,
z/OS Support:
ACIWorldwide - Telecommuter
H(412-766-2697) C(412-519-2592)
terri.shaf...@aciworldwide.com<mailto:terri.shaf...@aciworldwide.com>

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