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IT23856: SERVER MAY EXPERIENCE INCREASING MEMORY ALLOCATION

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You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • .
    IBM Spectrum Server may experience increasing usage of memory
    from psSessionThread() in tcpcomm.c,
    .
    L2/customer diagnostics:
    .
    When the issue happens:
    1: Server command "show alloc" shows tcpcomm.c entry counts
    continue to increase:
    
    For example, a collect of every 20mins:
      tcpcomm.c line  2403:    20583 entries for     674463744 bytes
    (psSessionThread) thread 910(psSessionThread parent=900)
      tcpcomm.c line  2416:    20583 entries for     674463744 bytes
    (psSessionThread) thread 910(psSessionThread parent=900)
      tcpcomm.c line  2403:    20682 entries for     677707776 bytes
    (psSessionThread) thread 910(psSessionThread parent=900)
      tcpcomm.c line  2416:    20682 entries for     677707776 bytes
    (psSessionThread) thread 910(psSessionThread parent=900)
    ...
    
    
      tcpcomm.c line  2416:    46150 entries for    1512243200 bytes
    (psSessionThread) thread 910()
      tcpcomm.c line  2403:    46223 entries for    1514635264 bytes
    (psSessionThread) thread 910(psSessionThread parent=900)
      tcpcomm.c line  2416:    46223 entries for    1514635264 bytes
    (psSessionThread) thread 910(psSessionThread parent=900)
      tcpcomm.c line  2403:    46337 entries for    1518370816 bytes
    (psSessionThread) thread 910(psSessionThread parent=900)
      tcpcomm.c line  2416:    46337 entries for    1518370816 bytes
    (psSessionThread) thread 910(psSessionThread parent=900)
    
    
    
    2: Server command "query session" shows no corresponding
    increase in the number of sessions.
    
    Platform version affected: 7.1.8+ and 8.1.2+ on all platforms
    

Local fix

  • -halt /restart server to release the situation if the paging
    usage is too high.
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * All Tivoli Storage Manager and IBM Spectrum Protect server   *
    * users.                                                       *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * See error description.                                       *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * Apply fixing level when available. This problem is currently *
    * projected to be fixed in levels 7.1.9 and 8.1.5. Note that   *
    * this is subject to change at the discretion of IBM.          *
    ****************************************************************
    

Problem conclusion

  • This problem was fixed.
    Affected platforms: AIX, HP, Solaris, Linux, and Windows.
    

Temporary fix

Comments

APAR Information

  • APAR number

    IT23856

  • Reported component name

    TSM SERVER

  • Reported component ID

    5698ISMSV

  • Reported release

    71A

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2018-01-26

  • Closed date

    2018-02-27

  • Last modified date

    2018-02-27

  • 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

  • R71A PSY

       UP

  • R71H PSY

       UP

  • R71L PSY

       UP

  • R71S PSY

       UP

  • R71W PSY

       UP

  • R81A PSY

       UP

  • R81L PSY

       UP

  • R81W PSY

       UP



Document information

More support for: Tivoli Storage Manager

Software version: 7.1.3

Reference #: IT23856

Modified date: 27 February 2018