Programming Interface Information: The Monitor Records are intended Programming Interfaces that allow the customer to write programs to obtain services of z/VM.

#### MRMTRSCH

Prolog
Control Block Contents
Storage Layout
Cross Reference

#### MRMTRSCH Prolog

####

####

     DSECT NAME - MTRSCH
     FUNCTION - Map a Monitor record.
     LOCATED BY -
               Through the Monitor Control Area
     REFERENCED CONTROL BLOCKS -
            MRRECHDR    Monitor Record Header
     NAME - MRMTRSCH
     DESCRIPTIVE NAME - Monitor Sample Configuration Record
                        Domain 1  - Monitor Domain
                        Record 16 - Scheduler Settings
     DESCRIPTION - Provides current settings of scheduler tuning
                   commands such as SET SRM DSPLICE.

    MRMTRSCH Control Block Contents

    Offsets
    Dec Hex  Type       Len  Name (Dim)          Description

      0   0  Structure   92  MTRSCH              Start of monitor record
      0   0  Character    0  MTRSCH_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  MTRSCH_SRMBIASI     Interactive bias intensity. Set
                                                 or defaulted by the SET SRM IAB
                                                 command.
     24  18  Character    8  MTRSCH_SRMTSLIC     Minor time slice size. Set or
                                                 defaulted by the SET SRM DSPSLICE
                                                 command.
     32  20  Character    8  MTRSCH_SRMTSHOT     The minor time slice used for
                                                 'hotshot' users.
     40  28  Unsigned     2  MTRSCH_SRMBIASD     Interactive bias duration. Set
                                                 or defaulted by the SET SRM IAB
                                                 command.
     42  2A  Unsigned     2  MTRSCH_SRMLDGUS     Number of page reads a user must
                                                 do in a minor time slice to be
                                                 classified as a 'loading user'.
     44  2C  Unsigned     4  MTRSCH_SRMP1LDG     Percentage of 'Load Capacity'
                                                 which can be taken by Q1, Q2, and
                                                 Q3 users. Set or defaulted by the
                                                 SET SRM LDUBUF command.
     48  30  Unsigned     4  MTRSCH_SRMP2LDG     Percentage of 'Load Capacity'
                                                 which can be taken by Q2, and Q3
                                                 users. Set or defaulted by the SET
                                                 SRM LDUBUF command.
     52  34  Unsigned     4  MTRSCH_SRMP3LDG     Percentage of 'Load Capacity'
                                                 which can be taken by Q3 user. Set
                                                 or defaulted by the SET SRM LDUBUF
                                                 command.
     56  38  Unsigned     4  MTRSCH_SRMLDGCP     Loading user capacity of the
                                                 system
     60  3C  Unsigned     4  MTRSCH_SRMP1WSS     Percentage of available memory
                                                 which is assignable to E1, E2 and
                                                 E3 users. Set or defaulted by the
                                                 SET SRM STORBUF command.
     64  40  Unsigned     4  MTRSCH_SRMP2WSS     Percentage of available memory
                                                 which is assignable to E2 and E3
                                                 users. Set or defaulted by the SET
                                                 SRM STORBUF command.
     68  44  Unsigned     4  MTRSCH_SRMP3WSS     Percentage of available memory
                                                 which is assignable to E3 users.
                                                 Set or defaulted by the SET SRM
                                                 STORBUF command.
     72  48  Unsigned     4  MTRSCH_SRMWSSMP     Maximum MAXWSS percentage. Set
                                                 or defaulted by the SET SRM MAXWSS
                                                 command.
     76  4C  Unsigned     4  MTRSCH_SRML1DSP     Number of openings in the
                                                 dispatch list made available to
                                                 users in the short-running (E1)
                                                 transactions. Set or defaulted by
                                                 the SET SRM DSPBUF command.
     80  50  Unsigned     4  MTRSCH_SRML2DSP     Number of openings in the
                                                 dispatch list made available to
                                                 users in the medium-running (E2)
                                                 transactions. This value is a
                                                 subset of MTRSCH_SRML1DSP. Set or
                                                 defaulted by the SET SRM DSPBUF
                                                 command.
     84  54  Unsigned     4  MTRSCH_SRML3DSP     Number of openings in the
                                                 dispatch list made available to
                                                 users in the long-running (E3)
                                                 transactions. This value is a
                                                 subset of MTRSCH_SRML1DSP. Set or
                                                 defaulted by the SET SRM DSPBUF
                                                 command.
     88  58  Unsigned     4  MTRSCH_SRMXPCTG     Percentage of XSTORE to use in
                                                 WSS and available memory
                                                 calculations. Defaulted or set by
                                                 the SET SRM XSTORE command. Units
                                                 of value is a hexadecimal factor
                                                 scaled 8 bits. Examples-
                                                 X'00000200'=2.00(200%),
                                                 X'00000100'=1.00(100%),
                                                 X'000000C0'=0.75(75%), etc.
     92  5C  Character    0  MTRSCH_END

    MRMTRSCH 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
    MTRSCH                  0     92
    MTRSCH_END             5C      0
    MTRSCH_MRHDR            0      0
    MTRSCH_SRMBIASD        28      2
    MTRSCH_SRMBIASI        14      4
    MTRSCH_SRMLDGCP        38      4
    MTRSCH_SRMLDGUS        2A      2
    MTRSCH_SRML1DSP        4C      4
    MTRSCH_SRML2DSP        50      4
    MTRSCH_SRML3DSP        54      4
    MTRSCH_SRMP1LDG        2C      4
    MTRSCH_SRMP1WSS        3C      4
    MTRSCH_SRMP2LDG        30      4
    MTRSCH_SRMP2WSS        40      4
    MTRSCH_SRMP3LDG        34      4
    MTRSCH_SRMP3WSS        44      4
    MTRSCH_SRMTSHOT        20      8
    MTRSCH_SRMTSLIC        18      8
    MTRSCH_SRMWSSMP        48      4
    MTRSCH_SRMXPCTG        58      4

    This information is
    based on z/VM V4R3.0.

    Last updated on 1 May 2002 at 16:20:33.

    Copyright IBM Corporation, 1990, 2002