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IV61837: REDUCED PERFORMANCE OF MV ON FS WITH BLOCKSIZE LARGER THEN 128KB APPLIES TO AIX 7100-02

A fix is available

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APAR status

  • Closed as program error.

Error description

  • The mv command uses a fixed 128k transfer buffer even
    if the filesystem uses a larger then 128k blocksize.
    This results into slower file moves of large files
    on non JFS2 filesystems which utilize a blocksize larger
    then 128k.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:
    * Systems running the 7100-02 Technology Level with
    * bos.rte.commands at 7.1.2.17 or 7.1.2.18
    ****************************************************************
    * PROBLEM DESCRIPTION:
    * The mv command uses a fixed 128k transfer buffer even
    * if the filesystem uses a larger then 128k blocksize.
    * This results into slower file moves of large files
    * on non JFS2 filesystems which utilize a blocksize larger
    * then 128k.
    ****************************************************************
    * RECOMMENDATION:
    * Install APAR IV61837.
    ****************************************************************
    

Problem conclusion

  • Code changes has been done to improve the performance of mv
    command for file system with large block size.
    

Temporary fix

Comments

  • 7100-02 - use AIX APAR IV61837
    7100-03 - use AIX APAR IV62042
    7100-04 - use AIX APAR IV62122
    

APAR Information

  • APAR number

    IV61837

  • Reported component name

    AIX V7.1

  • Reported component ID

    5765H4000

  • Reported release

    710

  • Status

    CLOSED PER

  • PE

    YesPE

  • HIPER

    NoHIPER

  • Submitted date

    2014-06-23

  • Closed date

    2014-06-26

  • Last modified date

    2016-05-11

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

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

    IV62042 IV62122

Fix information

  • Fixed component name

    AIX V7.1

  • Fixed component ID

    5765H4000

Applicable component levels

  • R710 PSY U865303

       UP15/01/19 I 1000

PTF to Fileset Mapping



Document information

More support for: AIX Enterprise Edition

Software version: 710

Operating system(s): AIX

Reference #: IV61837

Modified date: 11 May 2016