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IT25287: PERFORMANCE SLOWDOWN SEEN DURING REPLICATION DUE TO LOCKING OF OBJECTS AFTER UPGRADE TO V8.1.4

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APAR status

  • Closed as unreproducible.

Error description

  • In V8.1.4, there was a change made for replication tiering so
    that an object would be locked to prevent it from being moved to
     a tiered cloud container pool. This can cause excessive locking
     and a potential slowdown in replication.
    The main symptom is seen in the show files created with
    servermon or the "show locks" command and thousands of locks of
    type 20009 being seen in the output. Show files produced with
    servermon because of this issue can be large, sometimes
    exceeding 1GB in size.
    .
    Tivoli Storage Manager Versions Affected: Spectrum Protect
    version 8.1.4, 8.1.5
    .
    
    
    
    
    
    | MDVREGR 8.1.4.0-TIV_5698ISMSV |
    .
    Customer/L2 Diagnostics:
    .
    Initial Impact: Medium
    .
    Additional Keywords: TS000845741 slow replication performance
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * All IBM Spectrum Protect server users.                       *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * See error description.                                       *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * This problem was fixed in level 8.1.5.                       *
    * Affected platforms for reported release: AIX, Linux, and     *
    * Windows.                                                     *
    ****************************************************************
    

Problem conclusion

Temporary fix

Comments

APAR Information

  • APAR number

    IT25287

  • Reported component name

    TSM SERVER

  • Reported component ID

    5698ISMSV

  • Reported release

    81L

  • Status

    CLOSED UR5

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2018-06-06

  • Closed date

    2018-08-20

  • Last modified date

    2018-08-20

  • APAR is sysrouted FROM one or more of the following:

  • APAR is sysrouted TO one or more of the following:

Fix information

Applicable component levels



Document information

More support for: Tivoli Storage Manager

Software version: 81L

Reference #: IT25287

Modified date: 20 August 2018


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