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

MRIODTON

Prolog
Control Block Contents
Cross Reference

MRIODTON Prolog

 DSECT NAME - IODTON
 FUNCTION - Map a Monitor record.
 LOCATED BY -
        Through the Monitor Control Area
 REFERENCED CONTROL BLOCKS -
        MRRECHDR    Monitor Record Header
 NAME - MRIODTON
 DESCRIPTIVE NAME - Monitor Event Record
                    Domain  6 - I/O Domain
                    Record 18 - Set Throttle Rate
 DESCRIPTION - Indicates that a throttle rate has been set
               for a device.

MRIODTON Control Block Contents

Offsets
Dec  Hex  Type        Len  Name (Dim)             Description
 
   0   0  Structure    40  IODTON                 Start of monitor record
   0   0  Character     0  IODTON_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  Unsigned      4  IODTON_RDEVSID         Host subchannel I.D. number
                                                  defined at initialization
  24  18  Unsigned      2  IODTON_RDEVDEV         Device number
  26  1A  Unsigned      2  *                      Reserved and available for
                                                  IBM use
  28  1C  Unsigned      4  IODTON_THRDLYS         Cumulative count of I/O
                                                  requests that were delayed.
                                                  This count may be non-zero if
                                                  we are changing the rate of a
                                                  device that is already in the
                                                  throttle set.
  32  20  Character     8  IODTON_THRIORTE        I/O rate expressed as the
                                                  TOD clock increment between
                                                  I/O operations.
  40  28  Character     0  IODTON_END

MRIODTON Cross Reference

                      Hex           Hex
Name                  Offset Length Value
 
IODTON                     0     40
IODTON_END                28      0
IODTON_MRHDR               0      0
IODTON_RDEVDEV            18      2
IODTON_RDEVSID            14      4
IODTON_THRDLYS            1C      4
IODTON_THRIORTE           20      8
MRHDR                      0     20
MRHDR_END                 14      0
MRHDRDM                    4      1
MRHDRLEN                   0      2
MRHDRRC                    6      2
MRHDRTOD                   8      8
MRHDRZER                   2      2

This information is
based on z/VM V7R1.0.

Last updated on 11 Sept 2018 at 15:20:49.

Copyright IBM Corporation, 1990, 2018