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IT23731: SPECTRUM PROTECT SERVER ON AIX MAY RUN INTO PAGING AND OUT OF MEMORY CONDITION

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You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • .
    Running IBM Spectrum Protect Server on AIX, the server process -
    dsmserv's memory usage will continue increase and may trigger
    heavy paging and cause AIX system abort when paging space
    exhaust.
    AIX IBM Spectrum Protect users running "local protect " may
    likely run into this issue. We are not aware of anything causing
     this issue outside of local protect.
    
    L2/customer Diagnostics:
    
    Execute :
    1: Spectrum protect Server command: show alloc
    2:AIX command :
     ps -ef|grep dsmserv
    
    svmon -P pid_of_dsmserv -O unit=KB,segment=on,filtertype=working
    | egrep -v clnt
    
    for example:
    1:show alloc:
    
    ...
      Space in ordinary blocks in use       813,092,160 bytes
      Space in free ordinary blocks       3,194,387,936 bytes
    ...
    
    From above data::
    -"  Space in ordinary blocks in use" or "in use memory": ~800MB
    ~" Space in free ordinary blocks" or "free memory" :   ~3GB
    
    2: from svmon:
    
    svmon -P 28901622 -O unit=KB,segment=on,filtertype=working |
    egrep -v clnt
    
    ----------------------------------------------------------------
    ---------------
         Pid Command            Inuse           Pin     Pgsp
    Virtual
    28901622 dsmserv        3,391,064    44116        0  3,391,064
    
    
    From above data:
    dsmserv process used ~3.3GB Virtual memory.  This value is close
    to the "free memory "+ in use memory". While ideally the amount
    of memory used by dsmserv process should close to the " in use
    memory".
    
    
    This will not change the memory requirements for the server,
    this only helps us to not get into paging space as frequently or
    to minimize the effects once we do need to get into paging
    space.
    

Local fix

  • Recycle IBM Spectrum Protect Server instance when the paging is
    high or periodically to release the memory.
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * All 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 level 8.1.5.  Note that   *
    * this is subject to change at the discretion of IBM.          *
    ****************************************************************
    

Problem conclusion

  • The problem was fixed.
    
    Affected platforms:  AIX
    

Temporary fix

Comments

APAR Information

  • APAR number

    IT23731

  • 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

    2018-01-12

  • Closed date

    2018-02-12

  • Last modified date

    2018-02-12

  • 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



Document information

More support for: Tivoli Storage Manager

Software version: 7.1.3

Reference #: IT23731

Modified date: 12 February 2018


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