MRSSIXLK

MRSSIXLK Prolog

 DSECT NAME - SSIXLK
 FUNCTION - Map a Monitor record.
 LOCATED BY -
        Through the Monitor Control Area
 REFERENCED CONTROL BLOCKS -
        MRRECHDR    Monitor Record Header
 NAME - MRSSIXLK
 DESCRIPTIVE NAME - Monitor Sample Record
                    Domain 11- SSI Domain
                    Record  6 - XDISK Serialization Sample
 DESCRIPTION - Indicates usage information for XDISK cross-system
               serialization routines.
 NOTES -
  1.  An SSIXLK record is generated for each XLKBK that exists.

MRSSIXLK Control Block Contents

Offsets
Dec  Hex  Type        Len  Name (Dim)             Description
 
   0   0  Structure   104  SSIXLK                 Start of monitor record
   0   0  Character     0  SSIXLK_MRHDR           Record header. See
                                                  MRRECHDR.
   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     1  SSIXLK_XLKTYPE         Lock Type - see XLKTYPE for
                                                  type definitions
  21  15  Character     1  *                      Reserved for future IBM use
  22  16  Unsigned      2  SSIXLK_RDEVDEV         For locks of type XLKMDCHN,
                                                  this value = RDEV number.
                                                  Otherwise, this is blank.
  24  18  Unsigned      4  SSIXLK_XLKXLGET        Count of exclusive acquires
                                                  that did not require comm.
  28  1C  Unsigned      4  SSIXLK_XLKXXGET        Count of exclusive acquires
                                                  that required cross-SSI comm.
  32  20  Unsigned      4  SSIXLK_XLKXDFRS        Count of acquires that
                                                  deferred before starting SSI
                                                  negotiation
  36  24  Unsigned      4  SSIXLK_XLKXAMSG        Count of messages sent in
                                                  order to achieve exclusive
                                                  acquires
  40  28  Unsigned      4  SSIXLK_XLKXARPL        Count of messages received
                                                  in response to exclusive
                                                  acquires
  44  2C  Unsigned      4  SSIXLK_XLKCLENS        Count of cleanups performed
                                                  on this lock
  48  30  Character     4  *                      Reserved for IBM use
  52  34  Character     8  SSIXLK_XLKXAWTM        TOD time spent deferred
                                                  waiting to communicate for
                                                  excl. acq.
  60  3C  Character     8  SSIXLK_XLKXARTM        TOD time spent deferred
                                                  waiting for responses to
                                                  excl. acq.
  68  44  Character     8  SSIXLK_XLKXRWTM        TOD time spent deferred
                                                  waiting to communicate for
                                                  excl. rel.
  76  4C  Character     8  SSIXLK_XLKXRRTM        TOD time spent deferred
                                                  waiting for responses to
                                                  excl. rel.
  84  54  Character     8  SSIXLK_XLKXHELD        TOD time spent holding the
                                                  lock exclusively across the
                                                  SSI on behalf of this system
  92  5C  Unsigned      4  SSIXLK_XLKMRTRY        Maximum number of retries
                                                  ever seen for any acquisition
                                                  of this lock.
  96  60  Unsigned      4  SSIXLK_XLKTRTRY        Total number of retries for
                                                  all acquisitions of this
                                                  lock.
 100  64  Unsigned      2  SSIXLK_XLKHGBST        Highest priority boost ever
                                                  seen for this lock.
 102  66  Unsigned      2  *                      Reserved for IBM use
 104  68  Character     0  SSIXLK_END

MRSSIXLK 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
SSIXLK                     0    104
SSIXLK_END                68      0
SSIXLK_MRHDR               0      0
SSIXLK_RDEVDEV            16      2
SSIXLK_XLKCLENS           2C      4
SSIXLK_XLKHGBST           64      2
SSIXLK_XLKMRTRY           5C      4
SSIXLK_XLKTRTRY           60      4
SSIXLK_XLKTYPE            14      1
SSIXLK_XLKXAMSG           24      4
SSIXLK_XLKXARPL           28      4
SSIXLK_XLKXARTM           3C      8
SSIXLK_XLKXAWTM           34      8
SSIXLK_XLKXDFRS           20      4
SSIXLK_XLKXHELD           54      8
SSIXLK_XLKXLGET           18      4
SSIXLK_XLKXRRTM           4C      8
SSIXLK_XLKXRWTM           44      8
SSIXLK_XLKXXGET           1C      4

This information is
based on z/VM V7R3.0.

Last updated on 13 February 2024 at 14:09:05.

Copyright IBM Corporation, 1990, 2024