The Real Storage System Usage Report tracks the allocation of
real storage frames at a monthly, weekly, daily, or hourly
level. Figure 2-5 shows an example of a monthly Real Storage
System Usage Report and Figure 2-6 shows the hourly form of
the report. In the hourly form, data for one day is
displayed by hour using the DAYS timespan of the MVS Paging
Activity File (SCPPAG).
REPORT OPTIONS
The Real Storage System Usage Report supports standard time
selection options, as well as SYSID selection and external
data selection. These options are controlled by the control
options discussed in Section 2.2.7.
DATA ELEMENTS
The elements reported are divided into the following
categories:
o Real Storage Use
o Real Storage Availability
o Fixed Storage Use
o Fixed Storage Availability
o Auxiliary Storage Workload
o Expanded Storage Workload
REAL STORAGE USE
Real storage use is shown in terms of frames allocated to the
MVS nucleus, the private area, the Local System Queue Area,
the Common Storage Area, and the System Queue Area.
NUCLEUS The size of the nucleus area, including the
FRAMES: nucleus load module, nucleus control block
(UCBs), and (for pre-MVS/XA systems) the fixed
LPA and BLDL areas. This value comes from
PAGFIN in the SCPPAG File.
PRIVATE The total frames, both pageable and fixed, that
FRAMES: are assigned to the private areas of all MVS
memories. This is PAGAVS from the CA MICS
database.
LSQA FIXED The number of frames assigned to the Local
FRAMES: System Queue Area (LSQA) of all MVS memories.
Because LSQA is totally fixed storage, the
number of LSQA frames is also the amount of
virtual pages used. Therefore, you can use this
value to track LSQA allocation problems. The
number of LSQA frames is PAGAVLS from the
CA MICS database.
CSA FRAMES: The total frames assigned to the Common Storage
Area (CSA). This value is PAGAVP from the
CA MICS database.
LPA FRAMES: The total frames assigned to the Pageable Link
Pack Area. This value is PAGAVLP from the
CA MICS database.
SQA FIXED The total frames assigned to the System Queue
FRAMES: Area (SQA). Because SQA is totally fixed
storage, the number of SQA frames is also the
amount of virtual pages used. You can use this
value to track SQA growth problems. The value
is PAGAVQ from the CA MICS database.
REAL STORAGE AVAILABILITY
Real storage availability is shown in terms of the total
available frames and the average number of unused frames.
FRAMES IN The number of frames available to the system
REAL other than the nucleus frames (PAGAVTFC).
STORAGE: Variations in this number can mean that memory
has been varied offline or become unavailable.
AVAILABLE The average number of unused frames (the length
FRAME of the ASM free queue). RMF only samples this
COUNT: number at the end of each measurement interval.
It is included on this report as an indication
of how real storage is being allocated. You
should use the SCPSRCnn Files for analysis of
the available frame queue. This value is PAGAVF
FIXED STORAGE USE
Real storage problems often arise from a growth in the amount
of fixed storage, which effectively lowers the number of
frames available for paging. To aid in tracking, all
components of fixed storage are reported by this section of
the report, even though several of the elements are reported
in the first section. The pool of dynamic pages is further
reduced by storage isolation. This reduction is not
reflected in this report.
NUCLEUS Because the nucleus is fixed, it is included
FRAMES: again in the fixed area of the report.
PRIVATE The total fixed frames assigned to the private
FIXED areas of all MVS memory frames. This is PAGAVR
FRAMES: from the CA MICS database.
CSA FIXED The total fixed frames assigned to the Common
FRAMES: Storage Area (CSA). This value is PAGAVC from
the CA MICS database.
LSQA FIXED Because LSQA is fixed, the number of pages is
FRAMES: also reported in the fixed area of the report.
SQA FIXED Because SQA is fixed, the number of pages is
FRAMES: also reported in the fixed area of the report.
LPA FIXED The number of fixed pages assigned to the
FRAMES: Pageable Link Pack Area (PAGAVLF).
FIXED BELOW The average number of real storage frames
16 MB (XA): addressed between 0 and 16 MB, and marked
non-pageable. This field is not valid for
pre-MVS/XA systems.
FIXED STORAGE AVAILABILITY
Fixed storage availability is reported in terms of the total
number of fixed frames and the number of frames that are
either free or not fixed.
TOTAL FIXED The total number of fixed frames over the report
FRAMES: interval. This number is not the total of the
separate pieces, as the value for each part of
fixed storage is an average. This value is
PAGAVX from the SCPPAG File.
TOTAL The number of frames that are either free (on
PAGEABLE the available frame queue) or are not fixed.
FRAMES: This number is the base frame count that ASM has
to work with. However, the minimum number of
storage fenced pages must also be subtracted
out. This value is PAGAVT from the CA MICS
database. Because of changes to RMF in MVS/SP
1.3 systems and beyond, the number of pageable
frames is no longer recorded, resulting in the
value for this field being the same as the
FRAMES IN REAL STORAGE value.
AUXILIARY STORAGE WORKLOAD
The workload of the page/swap subsystem is reported so that
you can view the relationship between the amount of pageable
storage and page/swap rates at the various report levels.
DEMAND PAGE The number of non-VIO, non-swap page-ins plus
RATE: the non-VIO reclaims. This is the page fault
rate (or demand page rate). This value is
PAGPSDPG from the CA MICS database.
LPA PAGES The number of page-ins per second for the Link
PER SECOND: Pack Area. The LPA is not modified, so there
are no page-outs for it.
CSA PAGES The number of page-ins plus page-outs per second
PER SECOND: for the Common Storage Area.
MAX DEMAND The maximum observed demand paging rate over the
PAGE RATE: time period (PAGMSDPG).
BLOCK IN The rate of page blocks moving in from
RATE: auxiliary storage (PAGPSBLK).
PAGES PER The average number of pages per block moved.
BLOCK IN: The value is:
(PAGPBLP+PAGBLK)/PAGBLK
SWAP RATE: The average number of physical swaps over the
time period (PAGPSSWP).
MAX SWAP The maximum swap rate over the time period
RATE: (PAGMSSWP).
PAGES PER The average number of page frames involved per
SWAP IN: swap-in operation (PAGAVPSI).
TOTAL PAGES The total pages moved per second by the
PER SECOND: Auxiliary Storage Manager. This includes all
physical movement of pages (swapping, demand,
both in and out, and block paging) but no
reclaims. This number is essentially the I/O
overhead of the ASM. The value is:
(PAGPIN+PAGPOUT+PAGSIN+PAGSOT+PAGVIN+
PAGVOT+PAGBLP)/DURATION
PAGES The number of pages moved from one frame of real
MOVED/SEC: storage to another. For example, pages moved
above or below the 16 MB line. Movements of
pages to expanded or auxiliary storage are not
included in this count.
VIRTUAL:REAL The ratio of allocated local page data set slots
RATIO: to the number of private area fixed and
pageable frames.
EXPANDED STORAGE WORKLOAD
If your system is at or above RMF version 3.3.0 and the
system being reported has expanded storage, elements unique
to expanded storage are included in this section.
Note: Because of the larger memory models presented by z9xx
mainframes and z/OS operating platforms, expanded storage is
no longer needed. However, it is possible to configure
central storage as expanded storage at IPL time to provide
for compatability with previous platforms. Therefore,
Performance Management will continue to support expanded
storage measurements.
ONLINE ES The total number of online expanded storage
FRAMES: frames: PAGOLE.
AVAILABLE ES The average number of unused expanded storage
FRAMES: frames: PAGAVES.
AV PAGES TO The per-second rate of pages moved to expanded
ES RATE: storage: PAGAVPES. Use in conjunction with the
migrated rate to analyze thrashing of expanded
storage.
AV PAGES The per-second rate of pages moved (migrated)
MIGRATED from expanded storage to auxiliary storage:
RATE: PAGAVPEA.
AV ES FRAMES The rate of expanded storage frames being freed
FREED RATE: without being migrated: PAGPSFNM.
AV PRIM WS The average rate of primary working set
FR ES RATE: migration from expanded storage to auxiliary
storage: PAGPSPWS. A primary working set is
the set of critical pages that must reside in
central storage prior to an address space being
dispatched. It consists of tables and queues,
fixed pages, as well as the first page of each
segment in the address space's working set.
AUX STORAGE The per-second rate of swaps to auxiliary
SWAP RATE: storage data sets as derived by the following
computation:
(PAGAXD+PAGLAX+PAGMIG) / DURATION
EXT STORAGE The per-second rate of swaps to expanded storage
SWAP RATE: as derived by the following computation:
(PAGESD+PAGLES) / DURATION
PG RT FROM The average number of page frames per second
EXP STOR: that were moved from expanded storage to real
storage due to demand activity: PAGPSRES.
VIO PAGE RT The rate per second at which VIO pages were
TO EXP STOR: transferred by the real storage manager (RSM)
from central storage to expanded storage:
PAGPSVME.
VIO MIGR RT The rate per second at which VIO pages were
FROM E STOR: migrated from expanded storage through central
storage to auxiliary storage: PAGPSVMG.
VIO PAGE RT The rate per second at which VIO pages were
FROM E STOR: transferred by the real storage manager (RSM)
from expanded storage to central storage:
PAGPSVRE.
HIP PAGE RT The rate per second at which hiperspace pages
TO EXP STOR: were transferred by the real storage manager
(RSM) from central storage to expanded storage:
PAGPSHME.
HIP MIGR RT The rate per second at which hiperspace pages
FROM E STOR: were migrated from expanded storage through
central storage to auxiliary storage: PAGPSHMG.
HIP PAGE RT The rate per second at which hiperspace pages
FROM E STOR: were transferred by the real storage manager
(RSM) from expanded storage to central storage:
PAGPSHRE.
AV CSA IN The average number of CSA pages in expanded
EXP STOR: storage: PAGAVCSE.
AV LPA IN The average number of LPA pages in expanded
EXP STOR: storage: PAGAVLPE.
AV LSQA IN The average number of LSQA pages in expanded
EXP STOR: storage: PAGAVLQE.
AV REG+SWA The average number of Region plus SWA pages in
IN EXP STOR: expanded storage: PAGAVRGS.
AV SQA IN The average number of SQA pages in expanded
EXP STOR: storage: PAGAVSQE.
AV HIP IN The average number of hiperspace pages in
EXP STOR: expanded storage: PAGAVHPX.
AV VIO IN The average number of VIO pages in expanded
EXP STOR: storage: PAGAVVPX.
CA MICS Performance Manager
MONTHLY REAL STORAGE SYSTEM USAGE REPORT
SYSTEM = ESA1 RUNDATE = APR 4, yyyy
----------------------------------------------------------
| |
| MONTHS (YY-MM): 91-02 91-03 CHANGE % |
| |
|--------------------------------------------------------|
| |
| REAL STORAGE USE |
| ---------------- |
| |
| NUCLEUS FRAMES 686.00 686.00 --- |
| PRIVATE FRAMES 2217.50 2279.37 2.79 % |
| LSQA FIXED FRAMES 481.06 485.63 0.95 % |
| CSA FRAMES 414.05 407.34 -1.62 % |
| LPA FRAMES 1056.17 1055.01 -0.10 % |
| SQA FIXED FRAMES 414.22 406.47 -1.87 % |
| |
|--------------------------------------------------------|
| |
| REAL STORAGE AVAILABILITY |
| ------------------------- |
| |
| FRAMES IN REAL STORAGE 5406.00 5406.00 -0.00 % |
| AVAILABLE FRAME COUNT 956.96 899.84 -5.96 % |
| |
|--------------------------------------------------------|
| |
| FIXED STORAGE USE |
| ----------------- |
| |
| NUCLEUS FRAMES 686.00 686.00 --- |
| PRIVATE FIXED FRAMES 100.29 109.77 9.45 % |
| CSA FIXED FRAMES 15.60 15.41 -1.22 % |
| LSQA FIXED FRAMES 481.06 485.63 0.95 % |
| SQA FIXED FRAMES 414.22 406.47 -1.87 % |
| LPA FIXED FRAMES 61.68 60.35 -2.15 % |
| FIXED BELOW 16 MB (XA) 545.50 557.61 2.22 % |
| |
|--------------------------------------------------------|
| |
| FIXED STORAGE AVAILABILITY |
| -------------------------- |
| |
| TOTAL FIXED FRAMES 1080.97 1104.54 2.18 % |
| TOTAL PAGEABLE FRAMES 5406.63 5406.12 -0.00 % |
| |
----------------------------------------------------------
Figure 2-5. Sample Monthly Real Storage System Usage Report (Part 1 of 2)
CA MICS Performance Manager
MONTHLY REAL STORAGE SYSTEM USAGE REPORT
SYSTEM = ESA1 RUNDATE = APR 4, yyyy
----------------------------------------------------------
| |
| MONTHS (YY-MM): 91-02 91-03 CHANGE % |
| |
|--------------------------------------------------------|
| |
| AUXILIARY STORAGE WORKLOAD |
| -------------------------- |
| |
| DEMAND PAGE RATE 6.28 5.88 -6.32 % |
| LPA PAGES PER SECOND 0.42 0.42 --- |
| CSA PAGES PER SECOND 0.90 0.90 --- |
| MAX DEMAND PAGE RATE 10.46 9.97 -4.69 % |
| BLOCK IN RATE 2.06 1.09 -47.09 % |
| PAGES PER BLOCK IN 13.50 18.40 39.26 % |
| SWAP RATE 1.02 0.96 -5.88 % |
| MAX SWAP RATE 5.48 5.34 -2.55 % |
| PAGES PER SWAP IN 61.04 60.82 -0.36 % |
| TOTAL PAGES PER SECOND 61.00 51.22 -16.03 % |
| PAGES MOVED/SEC 9.11 9.07 -0.43 % |
| VIRTUAL:REAL RATIO 2.58 2.44 -5.42 % |
|--------------------------------------------------------|
| |
| EXPANDED STORAGE WORKLOAD |
| ------------------------- |
| |
| ONLINE ES FRAMES 6144.00 6144.00 --- |
| AVAILABLE ES FRAMES 3035.50 3120.71 2.81 % |
| AV PAGES TO ES RATE 1.90 1.72 -9.47 % |
| AV PAGES MIGRATED RATE 0.04 0.01 -75.00 % |
| AV ES FRAMES FREED RATE 0.02 0.01 -50.00 % |
| AV PRIM WS FR ES RATE 0.06 0.04 -33.33 % |
| AUX STORAGE SWAP RATE 0.00 0.00 N/A |
| EXT STORAGE SWAP RATE 1.02 0.96 -5.88 % |
| PG RT FROM EXP STOR 1.30 0.73 -43.85 % |
| VIO PAGE RT TO EXP STOR 0.00 N/A |
| VIO MIGR RT FROM E STOR 0.00 N/A |
| VIO PAGE RT FROM E STOR 0.00 N/A |
| HIP PAGE RT TO EXP STOR 0.55 0.47 -14.55 % |
| HIP MIGR RT FROM E STOR 0.02 0.02 --- |
| HIP PAGE RT FROM E STOR 0.53 0.51 -3.77 % |
| AV CSA IN EXP STOR 31.50 35.87 13.87 % |
| AV LPA IN EXP STOR 1.50 1.61 7.33 % |
| AV LSQA IN EXP STOR 50.00 52.88 5.76 % |
| AV REG+SWA IN EXP STOR 3083.59 2971.66 -3.62 % |
| AV SQA IN EXP STOR 4.61 5.30 14.97 % |
| AV HIP IN EXP STOR 6.57 9.43 45.53 % |
| AV VIO IN EXP STOR 0.00 N/A |
----------------------------------------------------------
Figure 2-5. Sample Monthly Real Storage System Usage Report (Part 2 of 2)
CA MICS Performance Manager HOURLY REAL STORAGE SYSTEM USAGE REPORT SYSTEM = TA01 RUNDATE = SEP 8, yyyy ---------------------------------------------------------------------------------------------- | | | HOUR-DATE (HR-MM/DD): 09-09/06 10-09/06 11-09/06 12-09/06 13-09/06 14-09/06 CHANGE % | | | |--------------------------------------------------------------------------------------------| | | | REAL STORAGE USE | | ---------------- | | | | NUCLEUS FRAMES 533.00 533.00 533.00 533.00 533.00 533.00 --- | | PRIVATE FRAMES 4648.00 4663.50 4691.50 4601.75 4008.00 4294.25 -7.61 % | | LSQA FIXED FRAMES 743.00 819.00 828.00 800.00 746.25 814.75 9.65 % | | CSA FRAMES 561.00 563.00 522.50 435.00 446.75 447.50 -20.23 % | | LPA FRAMES 1211.00 1237.50 1198.50 1161.50 1197.00 1219.25 0.68 % | | SQA FIXED FRAMES 639.25 640.25 641.25 641.75 642.25 641.75 0.39 % | | | |--------------------------------------------------------------------------------------------| | | | REAL STORAGE AVAILABILITY | | ------------------------- | | | | FRAMES IN REAL STORAGE 7536.00 7536.00 7536.00 7536.00 7536.00 7536.00 --- | | AVAILABLE FRAME COUNT 653.50 486.00 544.25 754.00 1253.75 887.00 35.73 % | | | |--------------------------------------------------------------------------------------------| | | | FIXED STORAGE USE | | ----------------- | | | | NUCLEUS FRAMES 533.00 533.00 533.00 533.00 533.00 533.00 --- | | PRIVATE FIXED FRAMES 810.75 764.50 781.50 750.50 650.50 660.25 -18.56 % | | CSA FIXED FRAMES 54.00 54.00 54.00 53.50 53.50 53.75 -0.46 % | | LSQA FIXED FRAMES 743.00 819.00 828.00 800.00 746.25 814.75 9.65 % | | SQA FIXED FRAMES 639.25 640.25 641.25 641.75 642.25 641.75 0.39 % | | LPA FIXED FRAMES 57.00 57.00 57.00 57.00 57.00 57.00 --- | | FIXED BELOW 16 MB (XA) 1254.25 1291.50 1288.25 1209.50 1097.25 1177.75 -6.09 % | | | |--------------------------------------------------------------------------------------------| | | | FIXED STORAGE AVAILABILITY | | -------------------------- | | | | TOTAL FIXED FRAMES 2305.00 2335.25 2362.25 2303.50 2150.75 2228.75 -3.30 % | | TOTAL PAGEABLE FRAMES 7536.00 7536.00 7536.00 7536.00 7536.00 7536.00 --- | | | ----------------------------------------------------------------------------------------------
Figure 2-6. Sample Hourly Real Storage System Usage Report (Part 1 of 2)
CA MICS Performance Manager HOURLY REAL STORAGE SYSTEM USAGE REPORT SYSTEM = TA01 RUNDATE = SEP 8, yyyy ---------------------------------------------------------------------------------------------- | | | HOUR-DATE (HR-MM/DD): 09-09/06 10-09/06 11-09/06 12-09/06 13-09/06 14-09/06 CHANGE % | | | |--------------------------------------------------------------------------------------------| | | | AUXILIARY STORAGE WORKLOAD | | -------------------------- | | | | DEMAND PAGE RATE 2.00 2.85 2.48 2.22 1.49 1.74 -13.00 % | | LPA PAGES PER SECOND 0.00 0.02 0.00 0.01 0.01 0.00 N/A | | CSA PAGES PER SECOND 0.00 0.02 0.03 0.08 0.01 0.00 N/A | | MAX DEMAND PAGE RATE 3.04 3.34 3.01 2.74 2.16 1.96 -35.52 % | | BLOCK IN RATE 0.44 1.25 2.04 0.67 1.26 3.91 778.64 % | | PAGES PER BLOCK IN 12.01 9.03 9.98 11.05 10.09 9.17 -23.65 % | | SWAP RATE 0.23 0.29 0.30 0.30 0.28 0.37 60.86 % | | MAX SWAP RATE 0.30 0.33 0.32 0.33 0.34 0.42 40.00 % | | PAGES PER SWAP IN 79.83 77.56 73.65 76.20 67.95 70.14 -12.13 % | | TOTAL PAGES PER SECOND 44.43 60.59 68.39 56.43 52.75 90.26 103.15 % | | PAGES MOVED/SEC 2.62 2.67 3.92 3.78 3.87 4.17 59.16 % | | VIRTUAL:REAL RATIO 1.81 1.92 1.93 1.96 2.23 2.13 17.67 % | | | ----------------------------------------------------------------------------------------------
Figure 2-6. Sample Hourly Real Storage System Usage Report (Part 2 of 2)
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