IC65786: EXPIRATION PERFORMANCE DEGRADED DUE TO DEDUPLICATION

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You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • The deletion algorithms used to support deduplicated storage
    pools can cause contention while expiration is running. This
    contention leads to degraded expiration performance.
    .
    Customer/L2 Diagnostics:
    On certain platforms, SHOW THREADS can be gathered to show the
    call stacks of running threads. To identify this APAR, you will
    see that the expiration thread spends most of its time on a
    database/table mutex.
    .
    Initial Impact: Medium
    Tivoli Storage Manager Versions Affected: 6.1.x Servers
    Additional Keywords: TSM zz61 BF_QUEUE_CHUNKS _mutex_lock lock
                         pkAcquireMutexTracked deadlock
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All Tivoli Storage Manager server users.     *
    ****************************************************************
    * PROBLEM DESCRIPTION: See error description.                  *
    ****************************************************************
    * RECOMMENDATION: Apply fixing level when available. This      *
    *                 problem is currently projected to be fixed   *
    *                 in levels 6.1.3.2 and 6.1.4.0. Note that     *
    *                 this is subject to change at the             *
    *                 discretion of IBM.                           *
    ****************************************************************
    *
    

Problem conclusion

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

Temporary fix

Comments

APAR Information

  • APAR number

    IC65786

  • Reported component name

    TSM SERVER

  • Reported component ID

    5698ISMSV

  • Reported release

    61A

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2010-01-22

  • Closed date

    2010-01-28

  • Last modified date

    2010-01-28

  • 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

  • R61A PSY

       UP

  • R61H PSY

       UP

  • R61L PSY

       UP

  • R61S PSY

       UP

  • R61W PSY

       UP



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Document information


More support for:

Tivoli Storage Manager

Software version:

61A

Reference #:

IC65786

Modified date:

2010-01-28

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