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 »  Home  »  System Performance Page 2  »  Easy Way to Adjust LargeSystemCache
Easy Way to Adjust LargeSystemCache
By  Super Admin  | Published  02/24/2005 | System Performance Page 2 | Rating:
Easy Way to Adjust LargeSystemCache

Normally, the tweak I've seen asks you to go into HKLM\System\CurrentControlSet\Control\Session Manager\Memory Management and change the value to either O or 1 to the adjustment the
LargeSystemCache.

However, in Windows XP, all you have to do is:

1. Right click My Computer
2. Select Properties
3. Click Advanced
4. Choose Performance
5. Click Advanced again
6. Select either Programs or System Cache under Memory Usage.

Programs = 0 for the registry tweak equilavent
System Cache = 1 for the registry tweak equilavent

From arstechnica.com:
On NT Server (in this case XP), the Large System Cache option is enabled, but disabled on Workstation. The two different settings effect how the cache manager allocates free memory. If the Large Cache option is on, the manager marks all the free memory, which isn't being used by the system and/or applications, as freely available for disk caching. On the flip-side (with a small cache), the manager instead only sets aside 4MB of memory for disk caching in an attempt to accelerate the launch of applications. Or in a more technical approach, if enabled the system will favor system-cache working sets over process working sets (with a working set basically being the memory used by components of a process).

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Comments
  • Comment #1 (Posted by an unknown user)
    Rating
    Microsoft has made it quite clear that LargeSystemCache is intended only for systems that are primarily used as file servers, and then only in specific cases. In spite of what some tech sites may claim, it is NOT appropriate for gaming or other workstation use. It will most likely impair performance in these cases. There are dangers in using this setting with some hardware configurations. Problems range from severe performance hits, system instability, and data corruption. Some users have been forced to reinstall WIndows to restore operation. Anyone considering this option should thoroughly investigate the issues and potential problems. You have been warned. References: http://support.microsoft.com/kb/895932 Larry Miller Microsoft MCSA
     
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