MRIODTON

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               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  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 V5R4.0.

Last updated on 20 Mar 2013 at 14:39:41.

Copyright IBM Corporation, 1990, 2013