IT47078: DOC UPDATE: PERFORMANCE ISSUE WITH BROKER-WIDE HTTP LISTENER ON AIX DURING HIGH LOAD

APAR status

• Closed as documentation error.

Error description

• During periods of high load, the Broker-wide HTTP Listener may
  experience performance issues on AIX.
  

Local fix

Problem summary

• ****************************************************************
  USERS AFFECTED:
  All users of IBM App Connect Enterprise V12.0 and V13.0 using
  the Integration Node HTTP listener on AIX systems.
  
  
  Platforms affected:
  AIX
  
  ****************************************************************
  PROBLEM DESCRIPTION:
  During periods of high load, the Integration Node HTTP listener
  on AIX systems may experience performance degradation.
  

Problem conclusion

• The IBM App Connect Enterprise product documentation has been
  updated with additional guidance on AIX memory and performance
  tuning options.
  
  On AIX systems, the startDataFlowEngine script
  sets the MALLOCOPTIONS environment variable to tune memory usage
  and performance of Integration Servers. The value set for
  MALLOCOPTIONS is controlled by the MQSI_MALLOCOPTIONS_OPTIMIZE
  environment variable.
  
  If MQSI_MALLOCOPTIONS_OPTIMIZE is set
  with value MEMORY, then the configuration is tuned for lower
  memory
  usage:
  MALLOCOPTIONS=pool,buckets,bucket_sizing_factor:16,multih
  eap:8,considersize
  
  If MQSI_MALLOCOPTIONS_OPTIMIZE not set
  (default), the configuration is tuned for higher
  performance:
  MALLOCOPTIONS=pool,buckets,bucket_sizing_factor:16,
  multiheap:32,no_mallinfo
  
  Select the appropriate option based on
  system resource and performance requirements.
  
  Note: To optimize
  memory usage and performance of the Integration Node HTTP
  listener, set the MALLOCOPTIONS environment variable to one of
  the values shown above in the startup profile used to start the
  Integration Node.
  

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:

Fix information

Applicable component levels