Memory Objects and High Virtual Storage Frames

Figure 1 shows a sample of the MEMORY OBJECTS AND HIGH VIRTUAL STORAGE FRAMES section if Enhanced DAT architecture is available. If Enhanced DAT architecture is not installed, no information about memory objects that can be backed in 1 MB frames is available. Also, no information about 1 MB frames is available and any fields in this section related to such memory objects or frames are not displayed.

All values in this section of the Paging Activity report are presented as MIN, MAX, and AVG values.

Figure 1. PAGING Report - Memory Objects and High Virtual Storage Frames

                                           P A G I N G  A C T I V I T Y
                                                                                                                          PAGE    3
           z/OS V2R1               SYSTEM ID TRX1              DATE 09/28/2013             INTERVAL 05.00.000
                                   RPT VERSION V2R1 RMF       TIME 10.35.00               CYCLE 1.000 SECONDS


OPT = IEAOPT00   LFAREA SIZE = 209715200   MEMORY OBJECTS AND HIGH VIRTUAL STORAGE FRAMES
------------------------------------------------------------------------------------------------------------------------------------

MEMORY OBJECTS         COMMON     SHARED       1 MB
------------------  ---------  ---------  ---------
      MIN                  53          1          1
      MAX                  56          1          4
      AVG                  54          1          2
1 MB FRAMES         ------------ FIXED ------------  ----------- PAGEABLE ----------
------------------      TOTAL  AVAILABLE     IN-USE      TOTAL  AVAILABLE     IN-USE
      MIN                 200         80         30        560        496         57
      MAX                 200        170        120        560        503         64
      AVG                 200        136         64        560        501         59
HIGH SHARED FRAMES      TOTAL       CENTRAL STORAGE              AUX DASD    AUX SCM
------------------  ---------       ---------------             ---------  ---------
      MIN           136902.1M                   206                     0          0
      MAX           136902.1M                   206                     0          0
      AVG           136902.1M                   206                     0          0
HIGH COMMON FRAMES      TOTAL       CENTRAL STORAGE   FIXED 4K   AUX DASD    AUX SCM
------------------  ---------       ---------------  ---------  ---------  ---------
      MIN            17301504                 6,090      2,773          0          0
      MAX            17301504                 6,093      2,773          0          0
      AVG            17301504                 6,092      2,773          0          0

Table 1. Fields in the Paging Activity report - Memory Objects and High Virtual Storage Frames
Field Heading	Meaning
MEMORY OBJECTS	COMMON Number of memory objects allocated in the high virtual common storage of the system. SHARED Number of memory objects allocated in the high virtual shared storage of the system. 1 MB Number of fixed memory objects that are allocated in the system and can be backed in 1 MB frames.
1 MB FRAMES - FIXED	TOTAL Total number of 1 MB frames, that can be used by fixed memory objects. This value is equal to the size of the Large Frame Area in megabytes. AVAILABLE Number of 1 MB frames in the Large Frame Area that are not in-use. IN-USE Number of 1 MB frames in the Large Frame Area that are in-use by fixed memory objects.
1 MB FRAMES - PAGEABLE	TOTAL Total number of 1 MB frames that can be used by pageable and DREF memory objects.. AVAILABLE Number of 1 MB frames that are not in-use by pageable and DREF memory objects. IN-USE Number of 1 MB frames that are in-use by pageable and DREF memory objects regardless of whether the frames are actually used for 1 MB pages or used to satisfy 4 KB space requests on a constrained system.
HIGH SHARED FRAMES	TOTAL Size of high virtual shared area in units of 4 KB pages. CENTRAL STORAGE Number of pages from high virtual shared storage that are backed in central storage (in units of 4 KB). AUX DASD Number of auxiliary storage slots used for high virtual shared pages that are backed on DASD. AUX SCM Number of auxiliary storage slots used for high virtual shared pages that are backed on SCM storage.
HIGH COMMON FRAMES	TOTAL Size of high virtual common area in units of 4 KB pages. CENTRAL STORAGE Number of pages from high virtual common storage that are backed in central storage (in units of 4 KB). FIXED 4K Number of pages from high virtual common storage that are fixed in central storage (in units of 4 KB). AUX DASD Number of auxiliary storage slots used for high virtual common pages that are backed on DASD. AUX SCM Number of auxiliary storage slots used for high virtual common pages that are backed on SCM storage.