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
    Top of page

    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 *              *was HighTime. If TOD clock
                                            exceeds this, its time to run
                                            stats.
    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).

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 7.2.0 Last updated on 24 Jun 2020 at 09:27:06 EDT.
Copyright IBM Corporation, 1990, 2020