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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. |
MRSTOXSG
PrologControl Block Contents
Cross Reference
MRSTOXSG Prolog
DSECT NAME - STOXSG
FUNCTION - Map a Monitor record.
LOCATED BY -
Through the Monitor Control Area
REFERENCED CONTROL BLOCKS -
MRRECHDR - Monitor Record Header
NAME - MRSTOXSG
DESCRIPTIVE NAME - Monitor Sample Record
Domain 3 - Storage Domain
Record 9 - Expanded Storage Data
DESCRIPTION - Expanded storage data. Generated only when expanded
storage has been attached.
MRSTOXSG Control Block Contents
Offsets
Dec Hex Type Len Name (Dim) Description
0 0 Structure 92 STOXSG
0 0 Character 0 STOXSG_MRHDR Record header
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 STOXSG_XSTMIGS Number of migrate
invocations
24 18 Unsigned 4 STOXSG_XSTBLKDM Number of expanded storage
blocks migrated from dormant
guests
28 1C Bitstring 8 STOXSG_XSTSUMAG Total age of all expanded
storage blocks migrated
36 24 Unsigned 4 STOXSG_XSTBLKCY Number of expanded storage
blocks migrated from
non-dormant guests
40 28 Unsigned 4 STOXSG_XSTBLKSH Number of expanded storage
blocks migrated from shared
systems (NSS/DCSS)
44 2C Unsigned 4 STOXSG_XSTBLKSY Number of expanded storage
blocks migrated from the CP
system address space.
48 30 Unsigned 4 STOXSG_XSTLOTHR Migration low threshold. If
XSTCTXAV falls below
XSTLOTHR, the migration task
will be kicked off. This
value may change at the end
of each migration.
52 34 Unsigned 4 STOXSG_XSTCYCLS Number of times the
migrator has made a complete
circuit of the cyclic list
56 38 Unsigned 4 STOXSG_XSTCPDAL Total number of expanded
storage blocks migrated
allocated to guests
56 38 Unsigned 4 STOXSG_XSTGUEST Alternate name to
STOXSG_XSTCPDAL
60 3C Bitstring 8 STOXSG_XSTNOIO Number of expanded storage
blocks that could be released
by the migrator without
having to perform I/O. These
are pages that have not been
modified since they were last
written to DASD.
Additionally, for user pages,
the page must have been
brought into storage as part
of a block and not
referenced.
68 44 Unsigned 4 STOXSG_XSTMAXCT Number of times the target
time is lowered
72 48 Unsigned 4 STOXSG_XSTRLOCT Number of time the
migration threshold buffer
increased
76 4C Unsigned 4 STOXSG_XSTRHICT Number of times the
migration threshold buffer
decreased
80 50 Unsigned 4 STOXSG_XSTUSRDM Number of dormant guest
owned address spaces that
were the target of migration
84 54 Unsigned 4 STOXSG_XSTUSRCY Number of non-dormant guest
owned address spaces that
were the target of migration
88 58 Unsigned 4 STOXSG_XSTCTPGM Count of PGMBKs selected
while migrating
92 5C Character 0 STOXSG_END
MRSTOXSG 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
STOXSG 0 92
STOXSG_END 5C 0
STOXSG_MRHDR 0 0
STOXSG_XSTBLKCY 24 4
STOXSG_XSTBLKDM 18 4
STOXSG_XSTBLKSH 28 4
STOXSG_XSTBLKSY 2C 4
STOXSG_XSTCPDAL 38 4
STOXSG_XSTCTPGM 58 4
STOXSG_XSTCYCLS 34 4
STOXSG_XSTGUEST 38 4
STOXSG_XSTLOTHR 30 4
STOXSG_XSTMAXCT 44 4
STOXSG_XSTMIGS 14 4
STOXSG_XSTNOIO 3C 8
STOXSG_XSTRHICT 4C 4
STOXSG_XSTRLOCT 48 4
STOXSG_XSTSUMAG 1C 8
STOXSG_XSTUSRCY 54 4
STOXSG_XSTUSRDM 50 4
This information is
based on z/VM V6R2.0.
Last updated on 23 Nov 2011 at 15:33:04.
Copyright IBM Corporation, 1990, 2011