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Prolog 
Control Block Contents 
   HFYBK 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.


  HFYBK Prolog Top of page
  
 NAME       : HCPHFYBK
 DESCRIPTION: Monitor System Domain Hi-Frequency Sample Data
 DSECT      : HFYBK
 FUNCTION   : Control block for system-domain high-frequency
              sample data. Data collected here are later
              transferred to the system-domain monitor record, MRSYTCPC.
 LOCATED BY : MNDHF_SYS_DATA
 CREATED BY : HCPMOYIN
 DELETED BY : HCPMOYTM
 REFERENCES : none
 SERIALIZED : MNDHFYLK lockword of HCPMND (Monitor data area)
 RELOCATION CONSIDERATIONS : None
 COMPATIBILITY AND MIGRATION CONCERNS : none.
 
 
  HFYBK Control Block Content Top of page
  




 HFYBK DSECT
Top of page


Hex   Dec Type/Val   Lng Label (dup)    Comments
---- ---- --------- ---- -------------- --------
0000    0 Structure      HFYBK          Monitor System Domain Hi-Frequency Sample Data
0000    0 Signed       4 HFYCOUNT       Number of samples taken
0004    4 Signed       4 HFYCACTV (256) The Number of times each channel
                                        path was active. Each index
                                        number of this array corresponds
                                        to its channel path number, 0 to
                                        255.
0404 1028 Signed       4 HFYCHSIM (51)  The number of times a total
                                        number of channel paths were
                                        simultaneously active. For index
                                        numbers, 0 to 49, each index
                                        number corresponds to the total
                                        number of channel paths that were
                                        active. For index number 50, this
                                        is the number of times that 50 or
                                        more channel paths were
                                        simultaneously active.
          000004D0       HFY$END        *
          0000009A       HFYSIZE        (HFY$END-HFYBK+7)/8 HFYBK size in
                                        doublewords
 
 
  HFYBK Storage Layout Top of page
  
          
*** HFYBK - Monitor System Domain Hi-Frequency Sample Data
*
*     +---------------------------+---------------------------+
*   0 |         HFYCOUNT          |                           |
*     +---------------------------+                           |
*   8 |                                                       |
*     =                       HFYCACTV                        =
*     |                           +---------------------------+
*     |                           |                           |
*     +---------------------------+                           |
* 408 |                                                       |
*     =                       HFYCHSIM                        =
*     |                                                       |
*     +-------------------------------------------------------+
* 4D0
*
*** HFYBK - Monitor System Domain Hi-Frequency Sample Data
 
 
  HFYBK Cross Reference Top of page
  
 
Symbol         Dspl Value
-------------- ---- -----
HFY$END        0404 000004D0
HFYCACTV       0004
HFYCHSIM       0404
HFYCOUNT       0000
HFYSIZE        0404 0000009A
 
This information is based on z/VM 7.2.0 Last updated on 24 Jun 2020 at 09:28:29 EDT.
Copyright IBM Corporation, 1990, 2020