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

MRSCLSTP

Prolog
Control Block Contents
Cross Reference

MRSCLSTP Prolog

 DSECT NAME - SCLSTP
 FUNCTION - Map a Monitor record.
 LOCATED BY -
           Through the Monitor Control Area
 REFERENCED CONTROL BLOCKS -
        MRRECHDR    Monitor Record Header
 NAME - MRSCLSTP
 DESCRIPTIVE NAME - Monitor Event Record
                    Domain 2 - Scheduler Domain
                    Record 8 - System Timer Pop
 DESCRIPTION - Record of changes to "smoothed" (i.e. averaged
               over time) scheduler data. Generated at every
               system-designated time interval. This data is
               critical to scheduling algorithms.
 NOTE : The time interval, designated by CP, is currently set at
        30 seconds but may be subject to change in the future.

MRSCLSTP Control Block Contents

Offsets
Dec  Hex  Type        Len  Name (Dim)             Description
 
   0   0  Structure    84  SCLSTP                 Start of monitor record
   0   0  Character     0  SCLSTP_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  Character     8  *                      Reserved for IBM use - used
                                                  to be SCLSTP_SRMRSCTM.
  28  1C  Unsigned      2  *                      Reserved for IBM use - used
                                                  to be SCLSTP_SYSPGRAT.
  30  1E  Unsigned      2  *                      Reserved for IBM use
  32  20  Unsigned      4  SCLSTP_SRMSTEAL        Instantaneous value of the
                                                  STEAL parameter reported on
                                                  the INDICATE LOAD command
  36  24  Character     8  SCLSTP_SRMSTRD         Average time to read a
                                                  page. Scheduler's estimate of
                                                  how long it is taking users
                                                  to receive a page once
                                                  requested. Measured in
                                                  elapsed time.
  44  2C  Unsigned      4  SCLSTP_SRM1AVWS        Average WSS of all E1 users
                                                  at the end of their Q1
                                                  dispatch list stay. Used by
                                                  the scheduler to assign a
                                                  projected WSS to E1 users on
                                                  entry to the eligible list
                                                  for a new transaction.
  48  30  Unsigned      4  SCLSTP_SRM1AVPG        Average paging rate of all
                                                  E1 users at the end of their
                                                  Q1 dispatch list stay. Used
                                                  by the scheduler to assign a
                                                  projected paging rate to E1
                                                  users on entry to the
                                                  eligible list for a new
                                                  transaction
  52  34  Unsigned      4  SCLSTP_SRMSTSRW        System resource weight for
                                                  storage. This is used by the
                                                  scheduler to decide how much
                                                  of a bottleneck the storage
                                                  resources are.
  56  38  Unsigned      4  SCLSTP_SRMAPGDE        Average Paging rate of user
                                                  in s dispatch and eligible
                                                  lists
  60  3C  Unsigned      4  SCLSTP_SRMAWSDE        Average WSS of users in
                                                  dispatch and eligible lists
  64  40  Unsigned      4  SCLSTP_SRMPGSRW        System resource weight for
                                                  paging. Used by the scheduler
                                                  to decide how much of a
                                                  bottleneck the paging
                                                  resources are.
  68  44  Unsigned      4  SCLSTP_SRMEPNF1        Expansion factor for all E1
                                                  users. Represents the ratio
                                                  of time it is taking for a
                                                  short transaction to complete
                                                  compared with the amount of
                                                  time it would take if it were
                                                  running alone on the system.
  72  48  Unsigned      4  SCLSTP_SRMEPNF2        Expansion time for all E2
                                                  users. Represents the ratio
                                                  of time it is taking for a
                                                  medium transaction to
                                                  complete compared with the
                                                  amount of time it would take
                                                  if it were running alone on
                                                  the system.
  76  4C  Unsigned      4  SCLSTP_SRMEPNF3        Expansion time for all E2
                                                  users. Represents the ratio
                                                  of time it is taking for a
                                                  long transaction to complete
                                                  compared with the amount of
                                                  time it would take if it were
                                                  running alone on the system.
  80  50  Unsigned      4  SCLSTP_SYSFPGRAT       Pages per second which are
                                                  being read in by the system
  84  54  Character     0  SCLSTP_END             

MRSCLSTP Cross Reference

                      Hex           Hex
Name                  Offset Length Value 
 
MRHDR                      0     20
MRHDR_END                 14      0
MRHDRDM                    4      1
MRHDRLEN                   0      2
MRHDRRC                    6      2
MRHDRTOD                   8      8
MRHDRZER                   2      2
SCLSTP                     0     84
SCLSTP_END                54      0
SCLSTP_MRHDR               0      0
SCLSTP_SRMAPGDE           38      4
SCLSTP_SRMAWSDE           3C      4
SCLSTP_SRMEPNF1           44      4
SCLSTP_SRMEPNF2           48      4
SCLSTP_SRMEPNF3           4C      4
SCLSTP_SRMPGSRW           40      4
SCLSTP_SRMSTEAL           20      4
SCLSTP_SRMSTRD            24      8
SCLSTP_SRMSTSRW           34      4
SCLSTP_SRM1AVPG           30      4
SCLSTP_SRM1AVWS           2C      4
SCLSTP_SYSFPGRAT          50      4

This information is
based on z/VM V6R4.0.

Last updated on 4 Oct 2016 at 15:31:15.
Copyright IBM Corporation, 1990, 2016