DY47394: HIPERSOCKET CONFIGURABLE INPUT BUFFERS

Obtain the fix for this APAR.

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 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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