DY47394: HIPERSOCKET CONFIGURABLE INPUT BUFFERS

A fix is available

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APAR status

  • Closed as new function.

Error description

  • A configuration option is added, that allows to configure the
    number of QDIO input buffers (default 8).
    Use  macro QDIOBUFF (newly shippled with this apar) in skeleton
    SKOSACFG.
    Allows to improve the performance in a Linux on System z and
    z/VSE Hipersocket environment, when
    the number of queues is unbalanced.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED: HiperSockets and OSA Express (CHPID OSD)     *
    *                 users.                                       *
    ****************************************************************
    * PROBLEM DESCRIPTION: Allow configuration of QDIO Input       *
    *                      buffers.                                *
    ****************************************************************
    * RECOMMENDATION: To configure the input queue buffers, you    *
    *                 may use SKOSACFG from UK82628 (PM67930).     *
    ****************************************************************
    Number of QDIO input queue buffers can be configured as a
    multiple of 8 in the range from 8 to 120. Default is 8.
    Note:
    Up to z/VSE Version 5.1 we need 1MB of 31-bit partition getvis
    space per link (for 8 input queue buffers). For each additional
    input queue buffer, we need  64K (OSA-Express)  and up to 64K
    (HiperSockets - depending on your IOCDS definition) additional
    31-bit partition getvis space.
    So if you increases the count of  input queue buffers, you may
    also have to increase the partition getvis space. Since the
    input queue buffers are PFIXed, you also have to increase the
    above value of the JCL SETPFIX LIMIT statement in your TCP/IP
    startup job accordingly.
    

Problem conclusion

Temporary fix

Comments

APAR Information

  • APAR number

    DY47394

  • Reported component name

    VSE/AF MACROS

  • Reported component ID

    5686CF906

  • Reported release

    51C

  • Status

    CLOSED UR1

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2012-06-29

  • Closed date

    2012-10-23

  • Last modified date

    2013-04-23

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

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

    PM67930 UD53905 UD53906

Modules/Macros

  •    IJBHSQ   IJBHSQ1  IJBHSQ2  IJBHSQ3  IJBOSA
    IJBOSA1  IJBOSA2  IJBOSA3  OSADCLP  OSADCLZ  OSADPOOL QDIOBUFF
    QEBSMACT
    

Fix information

  • Fixed component name

    VSE/AF MACROS

  • Fixed component ID

    5686CF906

Applicable component levels

  • R51C PSY UD53905

       UP12/12/14 P E512

  • R51G PSY UD53906

       UP12/12/14 P E512

Fix is available

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Document information


More support for:

z/VSE family

Software version:

51C

Operating system(s):

VSE/ESA

Reference #:

DY47394

Modified date:

2013-04-23

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