MRMTRCPC

MRMTRCPC Prolog

 DSECT NAME - MTRCPC
 FUNCTION - Map a Monitor record.
 LOCATED BY -
           Through the Monitor Control Area
 REFERENCED CONTROL BLOCKS -
        MRRECHDR    Monitor Record Header
 NAME - MRMTRCPC
 DESCRIPTIVE NAME - Monitor Sample Configuration Record
                    Domain 1  - Monitor Domain
                    Record 28 - CPU Pool Configuration
 DESCRIPTION - Records all of the CPU Pools that are defined on
               the system when monitor is started or connected to.

MRMTRCPC Control Block Contents

Offsets
Dec  Hex  Type        Len  Name (Dim)             Description
 
   0   0  Structure    40  MTRCPC                 Start of monitor record.
   0   0  Character     0  MTRCPC_MRHDR           Record header. See MRRECHDR
                                                  for details.
   0   0  Character    20  MRHDR
   0   0  Unsigned      2  MRHDRLEN
   2   2  Unsigned      2  MRHDRZER
   4   4  Unsigned      1  MRHDRDM
   5   5  Unsigned      1  *
   6   6  Unsigned      2  MRHDRRC
   8   8  Character     8  MRHDRTOD
  16  10  Character     4  *
  20  14  Character     0  MRHDR_END
  20  14  Character     8  MTRCPC_LIMPOOL         CPU pool name.
  28  1C  Bitstring     1  MTRCPC_FLAGS           Flag byte.
          1... ....        MTRCPC_CPUAFFON        CPU Affinity setting for
                                                  the MTRCPC_LIMCPUTY processor
                                                  type limited by this CPU
                                                  pool. If ON, CPU Affinity is
                                                  ON. If OFF, CPU Affinity is
                                                  suppressed.
          .1.. ....        MTRCPC_LIMEXMPT        Members exempt from
                                                  overcommitment enforcement.
          ..1. ....        *
          ...1 ....        *
          .... 1...        *
          .... .1..        *
          .... ..1.        *
          .... ...1        *
  29  1D  Unsigned      1  MTRCPC_LIMCPUTY        CPU pool CPU type limited.
                                                  Valid values: X'00' - General
                                                  Purpose (CP) X'03' -
                                                  Integrated Facility for Linux
                                                  (IFL)
  30  1E  Unsigned      1  MTRCPC_TYPELIM         TYPE of LIMIT listed in
                                                  MTRCPC_MAXSHARE. Valid
                                                  values: X'01' - LIMITHARD
                                                  limit X'02' - CAPACITY limit
  31  1F  Character     1  *                      Reserved for IBM use.
  32  20  Unsigned      4  MTRCPC_MAXSHARE        CPU pool maximum share from
                                                  DEFINE or SET CPUPOOL
                                                  command. Unit of value is a
                                                  hexadecimal factor scaled 16
                                                  bits. For example,
                                                  X'00010000' = 1.00(100%),
                                                  X'0000C000' = 0.75(75%),
                                                  X'00008000' = 0.50(50%), etc.
  36  24  Unsigned      4  MTRCPC_LIMCTMEM        Current number of users in
                                                  the CPU pool.
  40  28  Unsigned      2  MTRCPC_LIMREFPC        Memory reference percentage.
  42  2A  Unsigned      2  MTRCPC_LIMRESPC        Memory resident percentage.
  40  28  Character     0  MTRCPC_END

MRMTRCPC 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
MTRCPC                     0     40
MTRCPC_CPUAFFON           1C     80
MTRCPC_END                28      0
MTRCPC_FLAGS              1C      1
MTRCPC_LIMCPUTY           1D      1
MTRCPC_LIMCTMEM           24      4
MTRCPC_LIMEXMPT           1C     40
MTRCPC_LIMPOOL            14      8
MTRCPC_LIMREFPC           28      2
MTRCPC_LIMRESPC           2A      2
MTRCPC_MAXSHARE           20      4
MTRCPC_MRHDR               0      0
MTRCPC_TYPELIM            1E      1

This information is
based on z/VM V7R5.0.

Last updated on 08 July 2026 at 14:39:05.

Copyright IBM Corporation, 1990, 2026