Programming Interface Information:
The Monitor Records are intended Programming Interfaces that allow the customer to write programs to obtain services of z/VM. |
MRSTOASS
PrologControl Block Contents
Cross Reference
MRSTOASS Prolog
DSECT NAME - STOASS FUNCTION - Map a Monitor record. LOCATED BY - Through the Monitor Control Area REFERENCED CONTROL BLOCKS - MRRECHDR Monitor Record Header NAME - MRSTOASS DESCRIPTIVE NAME - Monitor Sample Record Domain 3 - Storage Domain Record 11 - Auxiliary Shared Storage Management (per Exposure) DESCRIPTION - Describes shared device space usage. A separate record is generated for each hardware exposure associated with each CP-owned shared volume. Note: This record will not contain paging and spooling allocation. This information is recorded only on the system owning the device.
MRSTOASS Control Block Contents
Offsets Dec Hex Type Len Name (Dim) Description 0 0 Structure 72 STOASS Start of monitor record 0 0 Character 0 STOASS_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 Character 6 STOASS_CPVOLSER VOLUME serial identifier 26 1A Character 2 * Reserved for IBM use 28 1C Unsigned 4 STOASS_RDEVSID host subchannel I.D. number defined at initialization 32 20 Unsigned 4 STOASS_EXPCTSRD Total number of spool reads 36 24 Unsigned 4 STOASS_EXPCTSWR Total number of spool writes 40 28 Unsigned 4 STOASS_EXPCTPRD Total number of page read operations for this device. Note that page read operations may be directed to devices without any cylinders specifically defined as type PAGE. 44 2C Unsigned 4 STOASS_EXPCTPWR Total number of page write operations for this device. Note that page write operations may be directed to devices without any cylinders specifically defined as type PAGE. 48 30 Unsigned 4 STOASS_EXPCURQC The number of page/spool read/writes that are currently active or queued on this logical device 52 34 Unsigned 4 STOASS_EXPCTACP The number of page/spool reads/writes that are added onto an executing channel program without executing a RSCH or SSCH 56 38 Unsigned 4 STOASS_EXPCTUSI Number of times user I/O interferes with paging and spooling I/O. 60 3C Unsigned 2 STOASS_SCMSSCH Cumulative count of SSCH and RSCH for this device. This value may be wrapped when format-1 measurement blocks are being used (MTRSYS_CALFLG2 <> x'80'). 62 3E Unsigned 2 * Reserved for IBM use 64 40 Unsigned 4 STOASS_SCGSSCH Fullword cumulative count of SSCH and RSCH for this device. Available when format-1 measurement blocks are being used (MTRSYS_CALFLG2 = x'80'). 68 44 Unsigned 2 STOASS_RDEVDEV Device number 70 46 Unsigned 2 * Reserved and available for IBM use. 72 48 Character 0 STOASS_END
MRSTOASS 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 STOASS 0 72 STOASS_CPVOLSER 14 6 STOASS_END 48 0 STOASS_EXPCTACP 34 4 STOASS_EXPCTPRD 28 4 STOASS_EXPCTPWR 2C 4 STOASS_EXPCTSRD 20 4 STOASS_EXPCTSWR 24 4 STOASS_EXPCTUSI 38 4 STOASS_EXPCURQC 30 4 STOASS_MRHDR 0 0 STOASS_RDEVDEV 44 2 STOASS_RDEVSID 1C 4 STOASS_SCGSSCH 40 4 STOASS_SCMSSCH 3C 2
This information is based on z/VM V5R1.0.
Last updated on 13 Sep 2004 at 11:25:22.
Copyright IBM Corporation, 1990, 2004