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PM44290: You will experience poor performance running an executable insid e of a directory that has thousands of symlinks on Windows 7

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APAR status

  • Closed as Vendor Solution.

Error description

  • You may experience performance degradation when running an
    executable in a dynamic view on Microsoft Windows 7.
    
    This behavior occurs in a directory that contains 1000s of
    cross-vob symbolic links.
    
    Performance may decrease if your config spec for the view limits
    the number of links that are visible.
    

Local fix

Problem summary

Problem conclusion

Temporary fix

Comments

  • The Windows Application Compatibility Engine is enabled by
    default; when an executable is launched, this system
    component issues a directory query call which traverses all
    elements in the directory containing the executable.  The
    time for this query to complete will increase with the size
    of the directory.
    This processing overhead can be eliminated by disabling the
    Application Compatibility Engine.   This is accomplished
    using the group policy editor, gpedit.msc, as follows:
    Start gpedit.msc
    Select
    \ Computer Configuration
    \ Administrative Templates
    \ Windows Components
    \ Application Compatibility
    Right click: Turn off Application Compatibility Engine and
    select edit.
    select "Enabled" and confirm using the OK button.
    Reboot.
    

APAR Information

  • APAR number

    PM44290

  • Reported component name

    CLEARCASE UNIX

  • Reported component ID

    5724G2901

  • Reported release

    711

  • Status

    CLOSED ISV

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2011-07-22

  • Closed date

    2012-05-09

  • Last modified date

    2012-05-09

  • 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

[{"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSSH27","label":"Rational ClearCase"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"7.1.1","Edition":"","Line of Business":{"code":"LOB36","label":"IBM Automation"}}]

Document Information

Modified date:
09 May 2012