IC82404: TIVOLI STORAGE MANAGER SERVER ON AIX PERFORMANCE DEGRADATION IF USE THE OLSON TIME ZONE

APAR status

• Closed as documentation error.

Error description

• Running Tivoli Storage Manager Server on AIX with Olson TimeZone
  may experience performance issue.  It has been observed that the
  Insertdb process can be more than 10 times slower compare using
  Olson TZ to using POSIX TZ on the same AIX host.
  
  AIX 6 uses Olson TZ as the default; as a result, the AIX 6 users
  may likely suffer this issue.   The root cause of this issue is
  AIX APAR IZ86764.
  
  Tivoli Storage Manager Servers product manual  need to be
  updated to warn AIX user to use POSIX timezone under appropriate
  sections. For example:  planning section and the estimate
  upgrade time section.
  
  Platform affected:
  Tivoli Storage manager Server on AIX
  
  additional keywords:
  slow performance IZ86764
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All Tivoli Storage Manager server users.     *
  ****************************************************************
  * PROBLEM DESCRIPTION: See error description.                  *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  *
  

Problem conclusion

• In the IBM Tivoli Storage Manager Performance Tuning Guide,
  in the section "AIX server performance," the following
  paragraph was added:
  
  "If the server is installed on an AIX Version 6.1 operating
  system, to improve system  performance, consider selecting the
  Portable  Operating System Interface (POSIX) time zone
  specification. The alternative time zone specification, based
  on the Olson database, might degrade system performance. For
  information about setting time zone specifications, see the
  documentation for the AIX operating system. If the server is
  installed on AIX Version 7.1, this issue does not occur."
  
  The same paragraph was added to the "DSMSERV INSERTDB (Move a
  server database into an empty database)" topic in the
  Administrator's Reference for AIX.
  
  Affected platforms: AIX
  

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