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Programming Interface Information:
The Monitor Records are intended Programming Interfaces that allow the customer to write programs to obtain services of z/VM. |
MRSTORSG
PrologControl Block Contents
Cross Reference
MRSTORSG Prolog
DSECT NAME - STORSG
FUNCTION - Map a Monitor record.
LOCATED BY -
Through the Monitor control area
REFERENCED CONTROL BLOCKS -
MRRECHDR Monitor Record Header
NAME - MRSTORSG
DESCRIPTIVE NAME - Monitor Sample Record
Domain 3 - Storage Domain
Record 1 - Real Storage Management (Global)
DESCRIPTION - Utilization of real memory. This includes available
list replenishment and free storage management.
MRSTORSG Control Block Contents
Offsets
Dec Hex Type Len Name (Dim) Description
0 0 Structure 80 STORSG Start of monitor record
0 0 Character 0 STORSG_MRHDR Record header. See MRRECHDR for
details.
0 0 Character 20 MRHDR
0 0 Unsigned 2 MRHDRLEN record length in bytes
2 2 Unsigned 2 MRHDRZER field of zeros
4 4 Unsigned 1 MRHDRDM domain identifier
5 5 Unsigned 1 *
6 6 Unsigned 2 MRHDRRC record identifier
8 8 Character 8 MRHDRTOD Time at which this record was
built. In time-of-day (TOD) clock
format. See IBM System 370 XA
Principle of Operation for
explanation of format.
16 10 Character 4 *
20 14 Character 0 MRHDR_END End of header
20 14 Unsigned 4 STORSG_CALSSUBT Cardinal count of blocks on each
regular free storage subpool list
24 18 Unsigned 4 STORSG_CALVSUBT Cardinal count of blocks on each
V=R free storage subpool list
28 1C Unsigned 4 STORSG_RSASAVFR Cardinal count of frames in use
for saveareas.
32 20 Unsigned 4 STORSG_RSAMAXPP Cardinal count or reserved
frames per processor.
36 24 Unsigned 4 STORSG_RSACPLOK Cardinal count of frames locked
by CP LOCK command.
40 28 Unsigned 4 STORSG_RSAAVLLT Cardinal count of available list
low threshold value. Indicates
when the demand scan should be
invoked. This provides a buffer of
frames for the system to use while
the demand scan is replenishing
the available list.
44 2C Unsigned 4 STORSG_RSAAVLHT Cardinal count of available list
high threshold. Number of frames
that should be taken by the
available list replenishment
functions to satisfy the current
user and system needs.
48 30 Unsigned 4 STORSG_XSTBPRCT Number of page faults that
involved DASD blocked pages
52 34 Unsigned 4 STORSG_XSTSRGCT Number of single page reads
reads for a guest
56 38 Unsigned 4 STORSG_XSTMRABI Number of pages that were
brought in as part of a block (the
guest referenced a different page
that was a member of the block)
but which have not been referenced
by the time they were selected for
migration
60 3C Unsigned 4 STORSG_XSTSRABI Number of pages that were
brought in as part of a block (the
guest referenced a different page
that was a member of the block)
but which have not been referenced
by the time they were selected for
steal
64 40 Unsigned 4 STORSG_XSTSRSCT Number of single reads for the
system. System pages are never
formed into blocks, so this number
represents all system page reads
68 44 Unsigned 4 STORSG_CALPTRRT Number of times the pageable
page address space was reorganized
to manage the segment paging
control fragmentation. PTRROGCT
72 48 Unsigned 4 STORSG_CALCAAFP Number of allocated, but unused,
pages of virtual storage for
paging virtual segment control.
CAAFPAG
76 4C Unsigned 4 STORSG_CALASCUT Number of frames of storage used
for paging virtual segment
control. ASCUSTE
80 50 Character 0 STORSG_END
MRSTORSG Cross Reference
Hex Hex
Name Offset Length Value
MRHDR 0 20
MRHDR_END 14 0
MRHDRDM 4 1
MRHDRLEN 0 2
MRHDRRC 6 2
MRHDRTOD 8 8
MRHDRZER 2 2
STORSG 0 80
STORSG_CALASCUT 4C 4
STORSG_CALCAAFP 48 4
STORSG_CALPTRRT 44 4
STORSG_CALSSUBT 14 4
STORSG_CALVSUBT 18 4
STORSG_END 50 0
STORSG_MRHDR 0 0
STORSG_RSAAVLHT 2C 4
STORSG_RSAAVLLT 28 4
STORSG_RSACPLOK 24 4
STORSG_RSAMAXPP 20 4
STORSG_RSASAVFR 1C 4
STORSG_XSTBPRCT 30 4
STORSG_XSTMRABI 38 4
STORSG_XSTSRABI 3C 4
STORSG_XSTSRGCT 34 4
STORSG_XSTSRSCT 40 4
This information is
based on z/VM V4R4.0.
Last updated on 22 Jul 2003 at 15:04:23.
Copyright IBM Corporation, 1990, 2003