IC64484: SLOW PERFORMANCE FOR NDMP BACKUPS WITH TOC CREATION ( AFSTOREREMOTE)

IBM Tivoli Storage Manager V6.1 Fix Pack 3 (6.1.3) Server Downloads

APAR status

• Closed as program error.

Error description

• The backup performance for NAS backups with the TOC=YES or
  TOC=PREFERRED keyword might be severely degraded using a Tivoli
  Storage Manager V6 server.
  
  If you think you are facing the symptom, a server
  instrumentation trace will show a highly active
  AfStoreRemoteThread.
  For help setting up this trace please contact your support
  representative.
  
   In the example below, about the whole time the trace was
  collected
   (03:54:49.177-->04:18:04.584) the thread was fetching
  information from DB2.
  
   Thread 2934 AfStoreRemoteThread parent=2933
                     03:54:49.177-->04:18:04.584
   Operation      Count  Tottime  Avgtime  Mintime  Maxtime
  InstTput totKB
   ---------------------------------------------------------------
  --------
   DB2 Fetch Exec  21158 1394.111    0.066    0.003    0.097
   DB2 Fetch       21157    0.276    0.000    0.000    0.000
   DB2 MFetch       2402    0.167    0.000    0.000    0.000
   Thread Wait        26    0.000    0.000    0.000    0.000
   Unknown                  0.851
   ---------------------------------------------------------------
  --------
   Total                 1395.407
  
  NOTE: The AfStoreRemoteThread referenced above is used for
        traditional NDMP support where images are stored in a
        remote tape library.  This issue also applies to filer-
        to-server configurations in which images are stored in
        a native storage pool.  If this is the case, the thread
        in question will be the AfStoreNativeThread instead of the
        AfStoreRemoteThread.
  
    Tivoli Storage Manager Versions Affected: all V6
    Initial Impact: High
    Additional Keywords: NDMP NAS ZZ61 TSM
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of IBM Tivoli Storage Manager      *
  *                 performing NDMP backup.                      *
  ****************************************************************
  * PROBLEM DESCRIPTION: See Error Description.                  *
  ****************************************************************
  * RECOMMENDATION: Apply fixing level when available.  This     *
  *                 problem is currently projected to be fixed   *
  *                 in server level 6.1.3 .  Note that this is   *
  *                 subject to change at the discretion of IBM.  *
  ****************************************************************
  See Error Description.
  

Problem conclusion

• The performance has been improved.
  Affected Platforms: AIX, HP-UX, Sun Solaris, Linux, Windows.
  

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:

Modules/Macros

• TOCBUILD TOCDEFS  TBTBL
  

Fix information

• Fixed component name

  TSM SERVER

• Fixed component ID

  5698ISMSV

Applicable component levels

• R61A PSY

     UP

• R61H PSY

     UP

• R61L PSY

     UP

• R61S PSY

     UP

• R61W PSY

     UP