HFPBK | Back to Index page

| Prolog Control Block Contents HFPBK 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.

HFPBK Prolog | Top of page

     NAME       : HCPHFPBK
     DESCRIPTION: Monitor Processor Domain Hi-Freq Sample Data Area
     DSECT      : HFPBK
     FUNCTION   : Control block for processor-domain high-frequency
                  sample data.  There is a separate HCPHFPBK for
                  each DSVBK in the system. Data collected here are
                  later transferred to the processor-domain monitor
                  record, MRPRCDHF.
     LOCATED BY : MNDHF_PRC_DATA
     CREATED BY : HCPMOPIN
     DELETED BY : HCPMOPTM
     REFERENCES : none
     SERIALIZED : MNDHF_PRC_LOCK
     RELOCATION CONSIDERATIONS : None
     COMPATIBILITY AND MIGRATION CONCERNS : none

HFPBK Control Block Content | Top of page

     HFPBK DSECT
    Top of page

    Hex   Dec Type/Val   Lng Label (dup)    Comments
    ---- ---- --------- ---- -------------- --------
    0000    0 Structure      HFPBK          Monitor Processor Domain Hi-Freq Sample Data Area
    0000    0 Bitstring   12 HFPARRAY (129) Array of counters, 1 per DSVBK
    0000    0 Signed       4 HFPCOUNT       Number of times DSVBK was
                                            examined
    0004    4 Signed       4 HFPUSERZ       Number of times there were no
                                            users in the DSVBK
    0008    8 Signed       4 HFPUSERC       Accumulated number of users in
                                            the DSVBK
              0000000C       HFP$ARRAY_END  * End of an array entry
              0000060C       HFP$END        * End of HFPBK
              000000C2       HFPSIZE        (HFP$END-HFPBK+7)/8 HFPBK size in
                                            doublewords

HFPBK Storage Layout | Top of page

    *** HFPBK - Monitor Processor Domain Hi-Freq Sample Data Area
    *
    *     +-------------------------------------------------------+
    *   0 |                                                       |
    *     =                       HFPARRAY                        =
    *     |                           +---------------------------+
    *     |                           | 60C
    *     +---------------------------+
    *
    *** HFPBK - Monitor Processor Domain Hi-Freq Sample Data Area

    *** Overlay for HFPARRAY in HFPBK
    *
    *     +---------------------------+---------------------------+
    *   0 |         HFPCOUNT          |         HFPUSERZ          |
    *     +---------------------------+---------------------------+
    *   8 |         HFPUSERC          | C
    *     +---------------------------+
    *
    *** Overlay for HFPARRAY in HFPBK

HFPBK Cross Reference | Top of page

    Symbol         Dspl Value
    -------------- ---- -----
    HFP$ARRAY_END  0008 0000000C
    HFP$END        0008 0000060C
    HFPARRAY       0000
    HFPCOUNT       0000
    HFPSIZE        0008 000000C2
    HFPUSERC       0008
    HFPUSERZ       0004

This information is based on z/VM 7.2.0 Last updated on 24 Jun 2020 at 09:28:30 EDT.
Copyright IBM Corporation, 1990, 2020