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

MRIODMOF

Prolog
Control Block Contents
Cross Reference

MRIODMOF Prolog

 DSECT NAME - IODMOF
 FUNCTION - Map a Monitor record.
 LOCATED BY -
        Through the Monitor Control Area
 REFERENCED CONTROL BLOCKS -
        MRRECHDR    Monitor Record Header
 NAME - MRIODMOF
 DESCRIPTIVE NAME - Monitor Event Record
                    Domain 6 - I/O Domain
                    Record 14- Set Subchannel Measurement Off
 DESCRIPTION - Indicates the SET SCMEASURE OFF command turned off
               subchannel measurements for the device.


MRIODMOF Control Block Contents

Offsets
Dec Hex  Type       Len  Name (Dim)          Description
 
  0   0  Structure   68  IODMOF              
  0   0  Character    0  IODMOF_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  IODMOF_RDEVSID      Host subchannel I.D. number
                                             defined at initialization
 24  18  Unsigned     2  IODMOF_RDEVDEV      Device number
 26  1A  Unsigned     2  *                   Reserved and available for IBM
                                             use
 28  1C  Unsigned     2  IODMOF_SCMSSCH      Cumulative count of SSCHs and
                                             RSCHs for this device. This value
                                             may be wrapped when format-1
                                             measurement blocks are being used
                                             (MTRSYS_CALFLG2 = x'80').
 30  1E  Unsigned     2  IODMOF_SCMCOUNT     Cumulative sample count.
                                             Incremented whenever any
                                             measurement fields are updated.
                                             This value may be wrapped when
                                             format-1 measurement blocks are
                                             being used (MTRSYS_CALFLG2 =
                                             x'80').
 32  20  Unsigned     4  IODMOF_SCMCNTIM     The time the device is connected
                                             to the channel. This is the sum of
                                             time intervals measured whenever
                                             device is logically connected to
                                             the channel path for purposes of
                                             transferring information between
                                             it and the channel subsystem.
 36  24  Unsigned     4  IODMOF_SCMFPTIM     The accumulated SSCH and RSCH
                                             function pending time, the time
                                             interval between acceptance of the
                                             start function (or resume function
                                             if the subchannel is in the
                                             suspend state) at the subchannel
                                             and acceptance of the first
                                             command associated with the
                                             initiation of channel-program
                                             execution at the device.
 40  28  Unsigned     4  IODMOF_SCMDDTIM     Device disconnect time. This is
                                             the sum of the time intervals
                                             measured whenever the device is
                                             logically disconnected from the
                                             channel subsystem while the
                                             subchannel is active
 44  2C  Unsigned     4  IODMOF_SCMCQTIM     Control unit queueing time. The
                                             sum of the time intervals measured
                                             by the control unit whenever the
                                             device is logically disconnected
                                             from the channel subsystem during
                                             an I/O operation while the device
                                             is busy with an operation from a
                                             different system.
 48  30  Unsigned     4  IODMOF_SCMDATIM     Device-active-only-time. The sum
                                             of the time intervals when the
                                             subchannel is device-active but
                                             not subchannel-active at the end
                                             of an I/O operation or chain of
                                             I/O operations initiated by START
                                             SUBCHANNEL.
 52  34  Unsigned     4  IODMOF_SCMDBTIM     Device-Busy Time. The sum of the
                                             time intervals when the subchannel
                                             is busy during an attempt to
                                             initiate a start function or
                                             resume function at the subchannel.
 56  38  Unsigned     4  IODMOF_SCMIRTIM     Initial-command-response time.
                                             The initial-command-response time
                                             for a start or resume function is
                                             the time interval beginning from
                                             when the first command of the
                                             channel program is sent to the
                                             device until the device indicates
                                             it has accepted the command.
 60  3C  Unsigned     4  IODMOF_SCGSSCH      Fullword cumulative count of
                                             SSCHs and RSCHs for this device.
                                             Available when format-1
                                             measurement blocks are being used
                                             (MTRSYS_CALFLG2 = x'80').
 64  40  Unsigned     4  IODMOF_SCGCOUNT     Fullword cumulative sample count
                                             incremented whenever any
                                             measurement fields are updated.
                                             Available when format-1
                                             measurement blocks are being used
                                             (MTRSYS_CALFLG2 = x'80').
 68  44  Character    0  IODMOF_END          

MRIODMOF Cross Reference

                      Hex           Hex
Name                 Offset Length Value
 
IODMOF                  0     68
IODMOF_END             44      0
IODMOF_MRHDR            0      0
IODMOF_RDEVDEV         18      2
IODMOF_RDEVSID         14      4
IODMOF_SCGCOUNT        40      4
IODMOF_SCGSSCH         3C      4
IODMOF_SCMCNTIM        20      4
IODMOF_SCMCOUNT        1E      2
IODMOF_SCMCQTIM        2C      4
IODMOF_SCMDATIM        30      4
IODMOF_SCMDBTIM        34      4
IODMOF_SCMDDTIM        28      4
IODMOF_SCMFPTIM        24      4
IODMOF_SCMIRTIM        38      4
IODMOF_SCMSSCH         1C      2
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 V4R4.0.
Last updated on 22 Jul 2003 at 15:04:23.
Copyright IBM Corporation, 1990, 2003