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The System Storage Usage Report tracks the allocation of
virtual storage on a monthly, weekly, daily, hourly, or
detail level. Figure 2-165 shows an example of a monthly
System Storage Usage Report and Figure 2-166 shows the hourly
form of the report. In the hourly form, data for one day is
displayed by hour using the DAYS time-span of the MVS Virtual
Storage System Usage File (SCPVSM).
REPORT OPTIONS
The System Storage 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 2.5.6.
DATA ELEMENTS
The elements reported are divided into the following
categories:
o Average Map
o CSA Average Values
o SQA Average Values
o Key Average Values
All categories contain above and below 16MB usage values.
AVERAGE MAP
Average Map Usage is shown in terms of storage allocated to
the MVS nucleus, the System Queue Area, the Common Storage
Area, the Pageable Link Pack Area, and the Private Area.
NUCLEUS: The size of the nucleus area, including the
nucleus load module and nucleus control blocks.
These values come from VSMANUCL and VSMANUCH
elements.
CSA: The storage assigned to the Common Storage Area.
This value is contained in the VSMACSAL and
VSMACSAH elements.
LPA: The storage assigned to the Pageable Link Pack
Area from the VSMALPAL and VSMALPAH elements.
Also reported separately are the FLPA (Fixed
LPA) storage from the VSMAFLPL and VSMAFLPH
elements, and the MLPA (Modified LPA) storage
from the VSMAMLPL and VSMMLPH elements.
SQA: The storage assigned to the System Queue Area
from the VSMASQAL and VSMASQAH elements.
Because SQA is totally fixed storage, the size
of the SQA also indicates the number of real
storage frames used.
PRIVATE: The storage that is assigned to the Private
Areas for all MVS address spaces. These are
from the VSMAPVTL and VSMAPVTH elements.
CSA AVERAGE VALUES
CSA Average Values are shown in terms of the total allocated
storage and the average amount of unused storage.
FREE PAGES The total amount of storage available in the
(BYTES): CSA, from the VSMAFCSL and VSMAFCSH elements.
LARGEST The total amount of storage available in the CSA
FREE BLOCK: in a contiguous block, from the VSMABCSL and
VSMABCSH elements.
SQA AVERAGE VALUES
SQA Average Values are shown in terms of the total allocated
storage and the average amount of unused storage.
FREE PAGES The total amount of storage available in the
(BYTES): SQA, from the VSMAFSQL and VSMAFSQH elements.
LARGEST The total amount of storage available in the SQA
FREE BLOCK: in a contiguous block, from the VSMABSQL and
VSMABSQH elements.
KEY AVERAGE VALUES
Key Average Values are useful in tracking exceptional
conditions occurring with the system storage.
SQA The total amount of storage used when the SQA
EXPANSION required expansion. This storage is obtained
INTO CSA: from the CSA; such an occurrence generally
represents a performance degradation. These
values are found in the VSMACSQL and VSMACSQH
elements.
PLPA The total amount of storage that is allocated
PACKING but not used among load modules in the PLPA.
LOSS: Such a loss occurs because all PLPA storage is
allocated in pages, but most often load modules
do not fill a page completely. These values are
found in the VSMAPAKL and VSMAPAKH elements.
PLPA The total amount of storage that is allocated
REDUNDANT redundantly because modules exist in PLPA and
SPACE: also in either the FLPA or MLPA. These values
are found in the VSMADUPL and VSMADUPH elements.
MAXIMUM The largest amount of storage that can be
USER specified as a REGION parameter on a JCL
REGION: statement. These values are found in the
VSMAUSRL and VSMAUSRH elements.
Additionally, it is possible optionally to produce all of the
above-reported elements with MINIMUM/MAXIMUM values to
provide for more detailed analysis.
MONTHLY SYSTEM STORAGE USAGE REPORT SYSTEM = CPU2 RUNDATE = JUL 5, 1988 ---------------------------------------------------------------------------------------------- | | | MONTHS (YY/MM): 87-12 88-01 88-02 88-03 88-04 88-05 CHANGE % | | | |--------------------------------------------------------------------------------------------| | | | AVERAGE MAP - ABOVE 16 MEG | | -------------------------- | | PRIVATE 2009M 2009M 2004M 2001M 2001M 2001M -0.42 % | | CSA 7998K 8548K 12M 16M 16M 16M 106.12 % | | MLPA 44K 44K 44K 44K 44K 44K --- | | FLPA 16K 16K 16K 16K 16K 16K --- | | PLPA 3968K 3968K 4096K 4220K 4220K 4220K 6.35 % | | SQA 8512K 8512K 8512K 8512K 8512K 8512K --- | | NUCLEUS 2464K 2464K 2464K 2464K 2464K 2464K --- | | | |--------------------------------------------------------------------------------------------| | | | AVERAGE MAP - BELOW 16 MEG | | -------------------------- | | NUCLEUS 412K 412K 409K 418K 424K 424K 2.91 % | | SQA 640K 640K 640K 640K 640K 640K --- | | PLPA 2541K 2520K 2406K 2306K 2312K 2312K -9.01 % | | FLPA 4K 4K 4K 4K 4K 4K --- | | MLPA 4K 5K 4K 4K 4K 4K --- | | CSA 6638K 6658K 6775K 6866K 6856K 6856K 3.26 % | | PRIVATE 6140K 6140K 6140K 6140K 6140K 6140K --- | | PREFIX SAVE AREA 4K 4K 4K 4K 4K 4K --- | | | |--------------------------------------------------------------------------------------------| | | | CSA AVG VALUES - ABOVE 16M | | -------------------------- | | FREE PAGES (BYTES) 3776K 3643K 9864K 13M 13M 13M 268.19 % | | LARGEST FREE BLOCK 3684K 3441K 9524K 12M 12M 12M 251.03 % | | ALLOCATED AREA SIZE 4319K 5219K 3057K 3996K 3507K 3554K -17.70 % | | | |--------------------------------------------------------------------------------------------| | | | CSA AVG VALUES - BELOW 16M | | -------------------------- | | FREE PAGES (BYTES) 1222K 1131K 1549K 1816K 1739K 1674K 36.94 % | | LARGEST FREE BLOCK 1065K 966K 1406K 1691K 1572K 1536K 44.24 % | | ALLOCATED AREA SIZE 5646K 5715K 5712K 5171K 5280K 5809K 2.89 % | | | ----------------------------------------------------------------------------------------------
Figure 2-165. Sample Monthly System Storage Usage Report (Part 1 of 2)
MONTHLY SYSTEM STORAGE USAGE REPORT SYSTEM = CPU2 RUNDATE = JUL 5, 1988 ---------------------------------------------------------------------------------------------- | | | MONTHS (YY/MM): 87-12 88-01 88-02 88-03 88-04 88-05 CHANGE % | | | |--------------------------------------------------------------------------------------------| | | | SQA AVG VALUES - ABOVE 16M | | -------------------------- | | FREE PAGES (BYTES) 6476K 6495K 6578K 6518K 6530K 6590K 1.74 % | | LARGEST FREE BLOCK 6405K 6447K 6516K 6457K 6462K 6545K 2.19 % | | ALLOCATED AREA SIZE 8512K 8512K 8512K 8512K 8512K 8512K --- | | | |--------------------------------------------------------------------------------------------| | | | SQA AVG VALUES - BELOW 16M | | -------------------------- | | FREE PAGES (BYTES) 13K 8K 11K 6K 9K 9K -31.21 % | | LARGEST FREE BLOCK 5K 4K 4K 4K 4K 4K -26.98 % | | ALLOCATED AREA SIZE 638K 638K 638K 638K 638K 638K -0.10 % | | | |--------------------------------------------------------------------------------------------| | | | KEY AVG VALUES - ABOVE 16M | | -------------------------- | | SQA EXPANSION TO CSA 0K 0K 0K 0K 0K 0K N/A | | PLPA PACKING LOSS 9K 9K 10K 11K 11K 10K 15.49 % | | PLPA REDUNDANT SPACE 13K 13K 13K 13K 13K 13K --- | | MAXIMUM USER REGION 2000M 2000M 1996M 1992M 1992M 1992M -0.42 % | | | |--------------------------------------------------------------------------------------------| | | | KEY AVG VALUES - BELOW 16M | | -------------------------- | | SQA EXPANSION TO CSA 67K 83K 76K 100K 95K 88K 31.05 % | | PLPA PACKING LOSS 6K 5K 6K 6K 6K 6K -2.5.8 % | | PLPA REDUNDANT SPACE 3K 4K 2K 2K 2K 2K -12.82 % | | MAXIMUM USER REGION 5988K 5988K 5988K 5988K 5988K 5988K --- | | | ----------------------------------------------------------------------------------------------
Figure 2-165. Sample Monthly System Storage Usage Report (Part 2 of 2)
HOURLY SYSTEM STORAGE USAGE REPORT SYSTEM = MVS1 RUNDATE = JUL 5, 1988 ------------------------------------------------------------------------------------------------------------------------- | | | HOUR/DATE (HR-MM/DD): 08-06/22 09-06/22 10-06/22 11-06/22 12-06/22 13-06/22 14-06/22 15-06/22 16-06/22 CHANGE % | | | |-----------------------------------------------------------------------------------------------------------------------| | | | AVERAGE MAP - ABOVE 16 MEG | | -------------------------- | | PRIVATE 2001M 2001M 2001M 2001M 2001M 2001M 2001M 2001M 2001M --- | | CSA 16M 16M 16M 16M 16M 16M 16M 16M 16M --- | | MLPA 44K 44K 44K 44K 44K 44K 44K 44K 44K --- | | FLPA 16K 16K 16K 16K 16K 16K 16K 16K 16K --- | | PLPA 4248K 4248K 4248K 4248K 4248K 4248K 4248K 4248K 4248K --- | | SQA 8512K 8512K 8512K 8512K 8512K 8512K 8512K 8512K 8512K --- | | NUCLEUS 2464K 2464K 2464K 2464K 2464K 2464K 2464K 2464K 2464K --- | | | |-----------------------------------------------------------------------------------------------------------------------| | | | AVERAGE MAP - BELOW 16 MEG | | -------------------------- | | NUCLEUS 424K 424K 424K 424K 424K 424K 424K 424K 424K --- | | SQA 640K 640K 640K 640K 640K 640K 640K 640K 640K --- | | PLPA 2312K 2312K 2312K 2312K 2312K 2312K 2312K 2312K 2312K --- | | FLPA 4K 4K 4K 4K 4K 4K 4K 4K 4K --- | | MLPA 4K 4K 4K 4K 4K 4K 4K 4K 4K --- | | CSA 5832K 5832K 5832K 5832K 5832K 5832K 5832K 5832K 5832K --- | | PRIVATE 7164K 7164K 7164K 7164K 7164K 7164K 7164K 7164K 7164K --- | | PREFIX SAVE AREA 4K 4K 4K 4K 4K 4K 4K 4K 4K --- | | | |-----------------------------------------------------------------------------------------------------------------------| | | | CSA AVG VALUES - ABOVE 16M | | -------------------------- | | FREE PAGES (BYTES) 12M 12M 12M 12M 12M 12M 12M 12M 12M -1.46 % | | LARGEST FREE BLOCK 12M 12M 12M 12M 12M 12M 12M 12M 12M -1.58 % | | ALLOCATED AREA SIZE 3969K 4076K 4141K 4133K 4128K 4128K 4134K 4162K 4168K 5.00 % | | | |-----------------------------------------------------------------------------------------------------------------------| | | | CSA AVG VALUES - BELOW 16M | | -------------------------- | | FREE PAGES (BYTES) 1893K 1884K 2137K 1960K 1873K 1862K 1877K 1868K 1867K -1.36 % | | LARGEST FREE BLOCK 1838K 1840K 1833K 1529K 1544K 1544K 1544K 1526K 1544K -16.01 % | | ALLOCATED AREA SIZE 3993K 3991K 3998K 4302K 4288K 4288K 4288K 4305K 4288K 7.37 % | | | -------------------------------------------------------------------------------------------------------------------------
Figure 2-166. Sample Hourly System Storage Usage Report (Part 1 of 2)
HOURLY SYSTEM STORAGE USAGE REPORT SYSTEM = MVS1 RUNDATE = JUL 5, 1988 ------------------------------------------------------------------------------------------------------------------------- | | | HOUR/DATE (HR-MM/DD): 08-06/22 09-06/22 10-06/22 11-06/22 12-06/22 13-06/22 14-06/22 15-06/22 16-06/22 CHANGE % | | | |-----------------------------------------------------------------------------------------------------------------------| | | | SQA AVG VALUES - ABOVE 16M | | -------------------------- | | FREE PAGES (BYTES) 7480K 7437K 7420K 7416K 7420K 7417K 7421K 7454K 7445K -0.46 % | | LARGEST FREE BLOCK 7480K 7437K 7420K 7416K 7420K 7417K 7419K 7419K 7421K -0.77 % | | ALLOCATED AREA SIZE 8512K 8512K 8512K 8512K 8512K 8512K 8512K 8512K 8512K --- | | | |-----------------------------------------------------------------------------------------------------------------------| | | | SQA AVG VALUES - BELOW 16M | | -------------------------- | | FREE PAGES (BYTES) 256K 253K 246K 245K 241K 238K 235K 237K 235K -7.89 % | | LARGEST FREE BLOCK 256K 253K 243K 241K 236K 235K 233K 235K 235K -7.89 % | | ALLOCATED AREA SIZE 384K 386K 396K 398K 404K 404K 406K 404K 404K 5.26 % | | | |-----------------------------------------------------------------------------------------------------------------------| | | | KEY AVG VALUES - ABOVE 16M | | -------------------------- | | SQA EXPANSION TO CSA 0K 0K 0K 0K 0K 0K 0K 0K 0K N/A | | PLPA PACKING LOSS 9K 9K 9K 9K 9K 9K 9K 9K 9K --- | | PLPA REDUNDANT SPACE 13K 13K 13K 13K 13K 13K 13K 13K 13K --- | | MAXIMUM USER REGION 1992M 1992M 1992M 1992M 1992M 1992M 1992M 1992M 1992M --- | | | |-----------------------------------------------------------------------------------------------------------------------| | | | KEY AVG VALUES - BELOW 16M | | -------------------------- | | SQA EXPANSION TO CSA 0K 0K 0K 0K 0K 0K 0K 0K 0K N/A | | PLPA PACKING LOSS 6K 6K 6K 6K 6K 6K 6K 6K 6K --- | | PLPA REDUNDANT SPACE 2K 2K 2K 2K 2K 2K 2K 2K 2K --- | | MAXIMUM USER REGION 7012K 7012K 7012K 7012K 7012K 7012K 7012K 7012K 7012K --- | | | -------------------------------------------------------------------------------------------------------------------------
Figure 2-166. Sample Hourly System Storage Usage Report (Part 2 of 2)
Area and of selected Private Areas. The following sections
include discussions of each of these topics:
1 - Virtual Storage Map for MVS/XA
2 - Initialization and Management of Virtual Storage
3 - VSM Management and Measurement Macros
4 - Virtual Storage Subpools
5 - Storage Protection
6 - Virtual Storage Measurement by RMF
7 - Allocation Measurements and Their Interpretation
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