ALSTATS Back to Index page
 
Prolog 
Control Block Contents 
   ALStats DSECT
Storage Layout 
Cross Reference (Contains links to field and bit definitions)
Programming Interface Information:
This information is NOT intended to be
used as Programming Interfaces of z/VM.

 
  ALSTATS Control Block Content Top of page
  




 ALStats DSECT
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Hex   Dec Type/Val   Lng Label (dup)    Comments
---- ---- --------- ---- -------------- --------
0000    0 Structure      ALStats        Available List Zone
0000    0 Dbl-Word     8 ALStatsST3     Start time 3 One more previous
0008    8 Dbl-Word     8 ALStatsET3 (0) End time 3 moment in time.
0008    8 Dbl-Word     8 ALStatsST2     Start time 2 Start/End of
                                        previous
0010   16 Dbl-Word     8 ALStatsET2 (0) End time 2 moment in time.
0010   16 Dbl-Word     8 ALStatsST1     Start time 1 Beginning of current
                                        moment in time.
0018   24 Dbl-Word     8 *              Reserved for IBM use.
0020   32 Dbl-Word     8 ALStatsRate3   Rate for second MT
0028   40 Dbl-Word     8 ALStatsRate2   Rate for first MT
0030   48 Dbl-Word     8 ALStatsStartCT Sum of significant MI counts of
                                        requests at start of MT. (end of
                                        previous one.)
0038   56 Dbl-Word     8 ALStatsTrig1   Trigger count - when sum of
                                        significant MI count of requests
                                        hits this, trigger stats call.
                                        A2Gc - type any contigs. A2Gs -
                                        type any singles. B2Gc - no
                                        meaning. B2Gs - no meaning.
0040   64 Dbl-Word     8 ALStatsT       Sum of all rates "in range."
0048   72 Dbl-Word     8 ALStatsN       Number of rates "in range."
0050   80 Dbl-Word     8 ALStatsMAX     Max rate in range (RAS so far.)
0058   88 Dbl-Word     8 ALStatsPS      Original value of trimmed spike.
0060   96 Bitstring    1 ALStatsFlg     Flag
          1... ....      ALSpikeR       X'80' ALSpikeR A spike was
                                        restricted.
0061   97 Bitstring    3 *              Reserved.
0064  100 Signed       4 *              Reserved.
0068  104 Dbl-Word     8 ALLullT        Lull total
0070  112 Dbl-Word     8 ALLullN        Lull number
          00000078       AVLSTStatsBS   *-ALStats Length of the stats.
          0000000F       AVLSTStatsDWS  (AVLSTStatsBS+7)/8 Length of the
                                        stats (DW).
      Define a local DSECT that maps an ANode.
 
 
  ALSTATS Storage Layout Top of page
  
          
*** ALStats - Available List Zone
*
*     +-------------------------------------------------------+
*   0 |                      ALSTATSST3                       |
*     +-------------------------------------------------------+
*   8 |                      ALSTATSST2                       |
*     +-------------------------------------------------------+
*  10 |                      ALSTATSST1                       |
*     +-------------------------------------------------------+
*  18 |///////////////////////////////////////////////////////|
*     +-------------------------------------------------------+
*  20 |                     ALSTATSRATE3                      |
*     +-------------------------------------------------------+
*  28 |                     ALSTATSRATE2                      |
*     +-------------------------------------------------------+
*  30 |                    ALSTATSSTARTCT                     |
*     +-------------------------------------------------------+
*  38 |                     ALSTATSTRIG1                      |
*     +-------------------------------------------------------+
*  40 |                       ALSTATST                        |
*     +-------------------------------------------------------+
*  48 |                       ALSTATSN                        |
*     +-------------------------------------------------------+
*  50 |                      ALSTATSMAX                       |
*     +-------------------------------------------------------+
*  58 |                      ALSTATSPS                        |
*     +------+--------------------+---------------------------+
*  60 |(060) |////////////////////|///////////////////////////|
*     +------+--------------------+---------------------------+
*  68 |                       ALLULLT                         |
*     +-------------------------------------------------------+
*  70 |                       ALLULLN                         |
*     +-------------------------------------------------------+
*  78
*
*** ALStats - Available List Zone
 
 
  ALSTATS Cross Reference Top of page
  
 
Symbol         Dspl Value
-------------- ---- -----
ALLullN        0070
ALLullT        0068
ALSpikeR       0060 80
ALStatsET2     0010
ALStatsET3     0008
ALStatsFlg     0060
ALStatsMAX     0050
ALStatsN       0048
ALStatsPS      0058
ALStatsRate2   0028
ALStatsRate3   0020
ALStatsStartCT
               0030
ALStatsST1     0010
ALStatsST2     0008
ALStatsST3     0000
ALStatsT       0040
ALStatsTrig1   0038
AVLSTStatsBS   0070 00000078
AVLSTStatsDWS  0070 0000000F
 
This information is based on z/VM 7.3.0 Last updated on 22 Jun 2022 at 15:47:37 EDT.
Copyright IBM Corporation, 1990, 2022