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Programming Interface Information:
The Monitor Records are intended Programming Interfaces that allow the customer to write programs to obtain services of z/VM. |
MRIODMOF
PrologControl 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 V6R2.0.
Last updated on 23 Nov 2011 at 15:33:04.
Copyright IBM Corporation, 1990, 2011