RMFODJ - z/OS Central Storage Daily Frame Use by SYSID

The RMFODJ inquiry shows how central storage 4k page frames are used for each z/OS LPAR in each Central Processing Complex (CPC).
micsrm140
This inquiry generates the following charts:
  • Daily Central Storage - Frames Available and Used
  • Daily Central Storage - Private Frame Use
  • Daily Central Storage - SQA and LSQA Frame Use
  • Daily Central Storage - LPA Frame Use
  • Daily Central Storage - CSA Frame Use
RMFODJ  -  zOS Central Storage Daily Frame Use by SYSID 1
RMFODJ  -  zOS Central Storage Daily Frame Use by SYSID 2
Uses
These charts show how z/OS LPARs use the real memory in central storage. Lack of sufficient real memory to handle workload requirements can result in excessive paging between central storage and auxiliary storage -- which results in less than optimal performance. These charts help to understand how real memory is used and can assist in identifying systems that are experiencing performance degradation due to insufficient central storage to satisfy workload requirements.
Charts - z/OS Central Storage Daily Page Frame Use
CHART #1: Daily Central Storage - Frames Available and Used
Chart #1 displays the daily average central storage page frame usage by each category (private, SQA, CSA, and so on), for each RMF interval. This usage is shown using vertical bars, which are stacked by central storage frame category. A horizontal reference line shows the total central storage page frames available to the z/OS LPAR. The white space between the top of the bars and the horizontal reference line represents available central storage page frames. The first chart sample is an example of chart #1. It shows the daily page frame use for z/OS LPAR CA31, running on an IBM zEC12 2827-615 CPC, at 15 minute intervals.
A sample of RMFODJ Daily Central Storage - Frames Available and Used
Left Y-axis
PAGAVP
Avg CSA Frames
PAGAVC
Avg CSA Fixed Frames
PAGAVLP
Avg LPA Frames
PAGAVLF
Avg LPA Fixed Frames
PAGAVQ
Avg SQA Fixed Frames
PAGAVLS
Avg LSQA Fixed Frames
PAGFIN
Frames in Nucleus
PAGAVR
Average Private Fixed Frames
PAGAVS
Avg Private Space Pageable Frames
Right Y-axis
PAGAVT
Avg Total Frames
X-axis
HHMM
Hour : Minute
CHART #2: Daily Central Storage - Private Frames Use
Chart #2 displays the minimum, average, and maximum usage each interval for private fixed, and private pageable page frames using horizontal lines.
A sample of RMFODJ Daily Central Storage - Private Frames Use
Left Y-axis
PAGMNS
Min Private Space Pageable Frames
PAGAVS
Avg Private Space Pageable Frames
PAGMXS
Max Private Space Pageable Frames
PAGMNR
Min Private Fixed Frames
PAGAVR
Average Private Fixed Frames
PAGMXR
Max Private Fixed Frames
X-axis
HHMM
Hour : Minute
CHART #3: Daily Central Storage - SQA and LSQA Frame Use
Chart #3 displays the minimum, average, and maximum usage each interval for System Queue Area (SQA) and Local System Queue Area (LSQA) page frames using horizontal lines. The second chart sample is an example of chart #3, generated for the same LPAR displayed with the first chart. You can see that the SQA and LSQA frame use has dropped dramatically at about 10 PM.
A sample of RMFODJ Daily Central Storage - SQA and LSQA Frame Use
Left Y-axis
PAGMNQ
Min SQA Fixed Frames
PAGAVQ
Avg SQA Fixed Frames
PAGMXQ
Max SQA Fixed Frames
PAGMNLS
Min LSQA Frames
PAGAVLS
Avg LSQA Frames
PAGMXLS
Max LSQA Frames
X-axis
HHMM
Hour : Minute
CHART #4: Daily Central Storage - LPA Frame Use
Chart #4 displays the minimum, average, and maximum usage each interval for Link Pack Area (LPA) fixed and pageable page frames using horizontal lines.
A sample of RMFODJ Daily Central Storage - LPA Frame Use
Left Y-axis
PAGMNLF
Min LPA Fixed Frames
PAGAVLF
Avg LPA Fixed Frames
PAGMXLF
Max LPA Fixed Frames
PAGMNLP
Min LPA Frames
PAGAVLP
Avg LPA Frames
PAGMXLP
Max LPA Frames
X-axis
HHMM
Hour : Minute
CHART #5: Daily Central Storage - CSA Frame Use
Chart #5 displays the minimum, average, and maximum usage each interval for Common Storage Area (CSA) fixed and pageable page frames using horizontal lines.
A sample of RMFODJ Daily Central Storage - CSA Frame Use
Left Y-axis
PAGMNC
Min CSA Fixed Frames
PAGAVC
Avg CSA Fixed Frames
PAGMXC
Max CSA Fixed Frames
PAGMNP
Min CSA Frames
PAGAVP
Avg CSA Frames
PAGMXP
Max CSA Frames
X-axis
HHMM
Hour : Minute
Inquiry Defaults
The following are RMFODJ Inquiry Defaults:
  • SCPPAG DETAIL timespan file: Cycles 01 - 02
  • Filters: None
  • User code excludes all but yesterday’s data
    (IF DATEPART(ENDTS) EQ TODAY()-1 ;
  • Derivations:
CPCID
%CPCID ;
DATE
DATEPART(ENDTS);
HHMM
PUT(HOUR(ENDTS),Z2.) || ':' || PUT(MINUTE(ENDTS),Z2.);
DATEHHMM
PUT(DATEPART(ENDTS),YYMMDDD10.) || ':' || HHMM ;
DATEHOUR
PUT(DATEPART(ENDTS),YYMMDDD10.) || ':' || PUT(HOUR,Z2.) ;
Modifications
Modification considerations:
  • If you want to see hourly, rather than interval level page frame use, you can use the SCPPAG DAYS timespan.
  • Using the following CPC Identification data elements you can filter on CPC:
    • fffMOD - Processor Model Family (where fff is the file identifier - for example, CPU, LPC, and so on.)
    • CPCMODID - CPC Model Identifier
    • CPCSEQNB - CPC Sequence Number