VM66026: MONITOR ENHANCEMENTS FOR HYPERPAV / PAV AND ZHPF

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• Monitor enhancements to better measure HyperPAV and zHPF
  usage.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All zVM Monitor users using HyperPAV and/or  *
  *                 HPF                                          *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  *                                                              *
  ****************************************************************
  * RECOMMENDATION: APPLY PTF                                    *
  ****************************************************************
  This APAR fixes three problems dealing with the monotoring data
  collected for HyperPAV/PAV devices and/or for devices using
  zHPF channel programs.
  1)  For DASD devices, the associated control unit's subsystem
      ID (SSID) is not easily accessible in a monitor record.
  2)  In the Domain 6 Record 3 MRIODDEV monitor record the
      IODDEV_RDEVWXCT and IODDEV_RDEVRXCT fields are not being
      collected for paging devices using zHPF channel programs.
  3)  In the Domain 6 Record 3 MRIODDEV monitor record for a
      PAV/HyperPAV base device, read and write counts for I/O's
      being done on a system attached PAV/HyperPAV Alias device on
      behalf of the base device are not collected.
  

Problem conclusion

• The solutions to the three problems solved with this APAR are
  as follows:
  1) DASD SSID fields were added to:
     Domain 1, Record 6 MRMTRDEV - (MTRDEV_CUIDSSID),
     Doamin 6, Record 3 MRIODDEV - (IODDEV_CUIDSSID)
     Domain 6, Record 1 MRIODVON - (IODVON_CUIDSSID)
     Also Montior processing modules HCPMOM, HCPMXI and HCPMNO
     were updated appropriately to fill them in for DASD devices
     from the CUIBK field CUIDDSID.
  -----
  2) In order for RDEVRXCT and RDEVWXCT to be incremented for
     paging devices using HPF channel programs IORIFLG,IORDPOSD
     needs to be set (for READS and WRITES) and IORIFLG,IORDWRIT
     needs to be set (for WRITES) in the HPF paging code.
     HCPPAJ and HCPPAI have been modified by to set those bits
     accordingly.
  -----
  3) Four new counts were added to the RDEV for Base devices that
     have I/O executed on aliases on behalf of them.  There are
     two write counts (all alias writes, RDEVWRAL, and HPF alias
     writes, RDEVWXAL) and two read counts (all alias reads,
     RDEVRDAL, and HPF alias reads, RDEVRXAL).
     The MRIODDEV monitor record had four corresponding fields
     added.  HCPIOS and HCPIQM were modified to increment these
     counts as appropriate and HCPMNO was modified to transfer
     these counts from the base RDEV to the MRIODDEV monitor
     record.
  

Temporary fix

• FOR RELEASE VM/ESA CP/ESA R640 :
  PREREQ: VM65885 VM65899 VM65965
  CO-REQ: NONE
  IF-REQ: NONE
  

Comments

• ×**** PE17/06/10 FIX IN ERROR. SEE APAR VM66036  FOR DESCRIPTION
  

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

  UM35133

Modules/Macros

• HCPIOS   HCPIQM   HCPMNO   HCPMOM   HCPMXI   HCPPAI   HCPPAJ
  HCPRDEV  MRIODDEV MRIODVON MRMTRDEV
  

Fix information

• Fixed component name

  VM CP

• Fixed component ID

  568411202

Applicable component levels

• R640 PSY UM35133

     UP17/06/07 P 1702

Fix is available

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