IT20769: MEMORY LEAK IN "DOGROUPMEMBERINFO" CAN OCCUR ON A SERVER THAT IS A REPLICATION TARGET

8.1.2.000-IBM-SPSRV-AIX
8.1.2.000-IBM-SPSRV-Linuxppc64le
8.1.2.000-IBM-SPCMS-Linuxx86_64
8.1.2.000-IBM-SPCMS-WindowsI32
8.1.2.000-IBM-SPSRV-Linuxs390x
8.1.2.000-IBM-SPCMS-WindowsX64
8.1.2.000-IBM-SPSRV-Linuxx86_64
8.1.2.000-IBM-SPSRV-WindowsX64
8.1.2.000-IBM-SPOC-AIX
8.1.2.000-IBM-SPOC-LinuxPPC64le
8.1.2.000-IBM-SPOC-Linuxs390x
8.1.2.000-IBM-SPOC-Linuxx86_64
8.1.2.000-IBM-SPOC-WindowsX64
IBM Spectrum Protect Server V8.1 Fix Pack 2 (V8.1.2) Downloads
IBM Spectrum Protect Server V7.1 Fix Pack 8 (7.1.8.000) Downloads

APAR status

• Closed as program error.

Error description

• A server that is a target for 'replicate node' can show memory
  usage and paging/swap space usage
  constantly increasing over time, with no release, until
  available memory runs out.
  
  "show memory" and "show alloc" can be collected at regular
  intervals to show memory usage constantly increasing
  over time. "show alloc" will show "DoGroupMemberInfo" memory
  usage reporting an excessive amount.
  
  
  
  
  The key thing to look for in the "show alloc"  documentation is
  this:
  
  imqueue.c line  5854:       27 entries for      51002248 bytes
  (PreAllocChunkForInvUpdateItems) thread 777434(psSessionThread
  parent=275)
  smrepl.c line 14552:   228346 entries for   29823382784 bytes
  (DoGroupMemberInfo) thread 20322()
  
  The number of entries in the second line for "DoGroupMemberInfo"
  should not exceed the number of entries in the first line.
  This memory leak happens on a target replication server.
  
  
  IBM Spectrum Protect versions affected:
  Server 7.1.7.100 and higher, and 8.1.x and higher on all
  supported platforms
  
  
  
  Initial Impact: Medium
  
  Additional Keywords:  TSM IBM Spectrum Protect memory leak
  memleak replication
  
  | MDVREGR 7.1.1.1-TIV_5698MSV |
  

Local fix

• Recycle the target server instance.
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * All Tivoli Storage Manager and IBM Spectrum Protect server   *
  * users.                                                       *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * See error description.                                       *
  *                                                              *
  * In addition to the described problem this also fixes a very  *
  * small memory leak for each options set that is replicated.   *
  * The following from SHOW ALLOC represents that memory leak,   *
  * in this case there were 2 options sets:                      *
  * 2 entries, using        174 bytes, from smnrclop.c(846)      *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * Apply fixing level when available. This problem is currently *
  * projected to be fixed in levels 7.1.8 and 8.1.2. Note that   *
  * this is subject to change at the discretion of IBM.          *
  ****************************************************************
  

Problem conclusion

• This problem was fixed.
  Affected platforms for reported release:  AIX, HP-UX, Solaris,
  Linux, and Windows.
  Platforms fixed:  AIX, HP-UX, Solaris, Linux, and 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:

Fix information

• Fixed component name

  TSM SERVER

• Fixed component ID

  5698ISMSV

Applicable component levels