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

MRSYTASG

Prolog
Control Block Contents
Cross Reference

MRSYTASG Prolog

 DSECT NAME - SYTASG
 FUNCTION - Map a Monitor record.
 LOCATED BY -
          Through the Monitor Control Area
 REFERENCED CONTROL BLOCKS -
        MRRECHDR    Monitor Record Header
 NAME - MRSYTASG
 DESCRIPTIVE NAME - Monitor Sample Record
                    Domain 0 - System Domain
                    Record 6 - Auxiliary Storage (Global)
 DESCRIPTION - Allocation and use of storage between CP and users.

MRSYTASG Control Block Contents

Offsets
Dec  Hex  Type        Len  Name (Dim)             Description
 
   0   0  Structure   108  SYTASG
   0   0  Character     0  SYTASG_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  Unsigned      4  SYTASG_CAL90FUL        Number of times available
                                                  paging slots were 90 percent
                                                  full. SAL90FUL in paging data
                                                  area of HCPPGD
  24  18  Unsigned      4  SYTASG_CAL91FUL        Number of times available
                                                  spooling slots were 90
                                                  percent full. SAL90FUL in
                                                  spooling data area of HCPPGD
  28  1C  Unsigned      4  SYTASG_CALSLTA1        DEPRECATED: Use
                                                  SYTASG_CALSLTA1G. Total
                                                  number of slots which have
                                                  been allocated for paging.
                                                  SALSLTAVg in paging data area
                                                  of HCPPGD. If SALSLTAVg is
                                                  too large to fit in this
                                                  32-bit field, then set to
                                                  x'FFFFFFFF'.
  32  20  Unsigned      4  SYTASG_CALSLTI1        DEPRECATED: Use
                                                  SYTASG_CALSLTI1G. Total
                                                  number of slots which are
                                                  currently being used by
                                                  paging. SALSLTIUg in paging
                                                  data area of HCPPDG. If
                                                  SALSLTIUg is too large to fit
                                                  in this 32-bit field, then
                                                  set to x'FFFFFFFF'.
  36  24  Unsigned      4  *                      Reserved for IBM use
  40  28  Unsigned      4  *                      Reserved for IBM use
  44  2C  Unsigned      4  SYTASG_CALSLTA2        Total number of slots which
                                                  have been allocated for
                                                  spooling. SALSLTAVg in
                                                  spooling data area of HCPPGD.
  48  30  Unsigned      4  SYTASG_CALSLTI2        Total number of slots which
                                                  are currently being used by
                                                  spooling. SALSLTIUg in
                                                  spooling data area of HCPPGD.
  52  34  Unsigned      4  SYTASG_SYSSFCRT        Cumulative number of files
                                                  which have been created. This
                                                  includes both spool files and
                                                  system data files, but not
                                                  those files which have
                                                  already been purged.
  56  38  Unsigned      4  SYTASG_SYSSFPUR        Number of files which have
                                                  been purged. This includes
                                                  both spool and system data
                                                  files, but not the system
                                                  data files in the pending
                                                  purge state.
  60  3C  Unsigned      4  SYTASG_CALTOTM1        Sum of modified Device Load
                                                  (MLOAD) on system paging
                                                  exposures. MLOAD is the
                                                  product of the number of
                                                  pages in the outstanding I/O
                                                  requests on the device
                                                  multiplied by the service
                                                  time of the device. From
                                                  SALTOTML in paging area of
                                                  HCPPGD.
  64  40  Unsigned      4  SYTASG_CALAVGM1        Average system MLOAD
                                                  (Modified Device Load). From
                                                  SALAVGML in paging area of
                                                  HCPPGD
  68  44  Unsigned      4  SYTASG_CALTOTM2        Sum of modified Device Load
                                                  (MLOAD) on system spooling
                                                  exposures. MLOAD is the
                                                  product of the number of
                                                  pages in the outstanding I/O
                                                  requests on the device
                                                  multiplied by the service
                                                  time of the device. From
                                                  SALTOTML in spooling area of
                                                  HCPPGD.
  72  48  Unsigned      4  SYTASG_CALAVGM2        Average system MLOAD
                                                  (Modified Device Load). From
                                                  SALAVGML spooling area of
                                                  HCPPGD
  76  4C  Unsigned      4  SYTASG_CALDMPAV        Total number of dump slots
                                                  available on special
                                                  dump-only volumes
  80  50  Unsigned      4  SYTASG_CALDMPIU        Total number of dump slots
                                                  in use on special dump-only
                                                  volumes
  84  54  Unsigned      4  SYTASG_RSAPGQHI        High water mark for paging
                                                  queue backlog. This is reset
                                                  to zero at each sample.
  88  58  Unsigned      4  SYTASG_RSAPGOVR        Cumulative count of times a
                                                  paging overrun was detected
                                                  (that is, the queue length
                                                  has exceeded the point to
                                                  keep the paging bandwidth
                                                  full).
  92  5C  Unsigned      8  SYTASG_CALSLTA1G       Total number of slots which
                                                  have been allocated for
                                                  paging. SALSLTAVg in paging
                                                  data area of HCPPGD.
 100  64  Unsigned      8  SYTASG_CALSLTI1G       Total number of slots which
                                                  are currently being used by
                                                  paging. SALSLTIUg in paging
                                                  data area of HCPPDG.
 108  6C  Character     0  SYTASG_END

MRSYTASG 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
SYTASG                     0    108
SYTASG_CALAVGM1           40      4
SYTASG_CALAVGM2           48      4
SYTASG_CALDMPAV           4C      4
SYTASG_CALDMPIU           50      4
SYTASG_CALSLTA1           1C      4
SYTASG_CALSLTA1G          5C      8
SYTASG_CALSLTA2           2C      4
SYTASG_CALSLTI1           20      4
SYTASG_CALSLTI1G          64      8
SYTASG_CALSLTI2           30      4
SYTASG_CALTOTM1           3C      4
SYTASG_CALTOTM2           44      4
SYTASG_CAL90FUL           14      4
SYTASG_CAL91FUL           18      4
SYTASG_END                6C      0
SYTASG_MRHDR               0      0
SYTASG_RSAPGOVR           58      4
SYTASG_RSAPGQHI           54      4
SYTASG_SYSSFCRT           34      4
SYTASG_SYSSFPUR           38      4

This information is
based on z/VM V7R1.0.

Last updated on 27 Jan 2021 at 10:51:49.
Copyright IBM Corporation, 1990, 2021