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VM66026: MONITOR ENHANCEMENTS FOR HYPERPAV / PAV AND ZHPF

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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

Comments

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

APAR Information

  • APAR number

    VM66026

  • Reported component name

    VM CP

  • Reported component ID

    568411202

  • Reported release

    640

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2017-05-18

  • Closed date

    2017-06-07

  • Last modified date

    2017-11-24

  • 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

  • Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.

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Document Information

Modified date:
24 November 2017