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

Rational ClearCase Fix Pack 07 (7.1.2.7) for 7.1.2
Rational ClearCase Fix Pack 03 (8.0.0.3) for 8.0
Rational ClearCase Fix Pack 14 (7.1.2.14) for 7.1.2
Rational ClearCase Fix Pack 11 (8.0.0.11) for 8.0
Rational ClearCase Fix Pack 12 (8.0.0.12) for 8.0
Rational ClearCase Fix Pack 15 (7.1.2.15) for 7.1.2
Rational ClearCase Fix Pack 13 (8.0.0.13) for 8.0
Rational ClearCase Fix Pack 16 (7.1.2.16) for 7.1.2
Rational ClearCase Fix Pack 17 (7.1.2.17) for 7.1.2
Rational ClearCase Fix Pack 14 (8.0.0.14) for 8.0
Rational ClearCase Fix Pack 18 (7.1.2.18) for 7.1.2
Rational ClearCase Fix Pack 15 (8.0.0.15) for 8.0
Rational ClearCase Fix Pack 19 (7.1.2.19) for 7.1.2
Rational ClearCase Fix Pack 16 (8.0.0.16) for 8.0
Rational ClearCase Fix Pack 17 (8.0.0.17) for 8.0
Rational ClearCase Fix Pack 18 (8.0.0.18) for 8.0
Rational ClearCase Fix Pack 19 (8.0.0.19) for 8.0
Rational ClearCase Fix Pack 20 (8.0.0.20) for 8.0
Rational ClearCase Fix Pack 21 (8.0.0.21) for 8.0

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 is sysrouted FROM one or more of the following:

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

Fix information

Applicable component levels