IC29444 is an APAR number; here is the text from IBMLINK, although it
doesn't say much.
(Best viewed in a fixed font:)

    Item IC29444


  APAR Identifier ...... IC29444       Last Changed..01/03/16
  PERFORMANCE PROBLEM DURING BACKUP WHEN ANTI VIRUS SOFTWARE IS
  ACTIVE

  Symptom ...... IN INCOROUT          Status ........... CLOSED  PER
  Severity ................... 2      Date Closed ......... 01/03/16
  Component .......... 5698TSMCL      Duplicate of ........
  Reported Release ......... 41W      Fixed Release ............ 999
  Component Name TIVOLI STR MGR       Special Notice
  Current Target Date ..01/05/26      Flags
  SCP ................... UNIX
  Platform ............ UNIX

  Status Detail: Not Available

  PE PTF List:

  PTF List:
  Release 41W   : PTF not available yet


  Parent APAR:
  Child APAR list:


  ERROR DESCRIPTION:
  Customer reports a performance problem when backing up a
  filespace where AV software is active. A trace with
  INSTR_CLIENT_DETAIL for filesystem with AV inactive shows:
  Process Dirs        0.485          242.5              2
  this value compares to the following reported when AV active:
  Process Dirs        0.844          422.0              2
  (sample values from this customer only, you will see
  significantly higher Process Dirs value compared to AV off)


  LOCAL FIX:
  Development provided 4.1.2 client based fixtest modules
  available form ftp.de.ibm.com/fromibm/aix as
  01920.fixtest.412modules.zip
  .
  Please copy the original files before replacing them with
  the files from this package.


  PROBLEM SUMMARY:
  ****************************************************************
  * USERS AFFECTED: Windows client machines running anti-virus   *
  *    programs.                                                 *
  ****************************************************************
  * PROBLEM DESCRIPTION: Backup performance may be noticeably    *
  *    slower if an anti-virus program is also running.          *
  ****************************************************************
  * RECOMMENDATION: Apply the fixing code when available.        *
  ****************************************************************


  PROBLEM CONCLUSION:
  The code was modified to avoid the performance degradation.


  TEMPORARY FIX:
  Windows client patch 4.1.2.12 also includes this fix.