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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. |
MRIODTON
PrologControl 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 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