You can change the priority of applications as soon as associated IO tasks are completed. Microsoft TCP/IP Stack component AFD.SYS allows you to do this. You can read all about it at http://rdweb.cns.vt.edu/public/notes/tcpip2000.pdf Again this is a registry tweak and works well with XP.Open Registry by going to START-RUN and entering REGEDIT and Navigate to [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\AFD\Parameters] and set the following key values to the values shown.
"TransmitWorker"=dword:00000010
"PriorityBoost"=dword:0000000a

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Navigate to HKLM\System\CurrentControlSet\Services\NTFS\EFS\Parameters and set the parameter of EFSKCACHEPERIOD to a value between 2 and 30. default is 5. Value suggest the time in seconds the kernel will cache the session key for a user for a given file. The Kernel will not validate the user credentials during this cache period. This has the net effect of faster access to encrypted files that may be opened several times during a given time period.This is helpful in kernel and user mode of the EFS (encrypting file system) as it provides quicker access to frequently use components.
Similarly navigate to HKLM\Software\Microsoft\Windows NT\CurrentVersion\EFS and set the value of KeyCacheValidationPeriod to a value in units of second from 1 minute to 1 day (60 to 86400).

Microsoft has an interesting article on this at Registry Keys Used to Tune EFS Caching (Q278256). Read it for complete details.

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Folks, I read about this a long time ago and my preliminary findings are that it works on XP as well even though I can not say how beneficial this trick is (or how damaging !). Also there might be some potential problems with a a few apps. But I would still provide it to You There is a way in registry for You to tell Windows OS to unload DLL,immediately as soon as its use is over. Here is how to do that: . Open Registry by going to START-RUN and entering REGEDIT and Navigate to [HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Explorer] and look for AlwaysUnloadDLL parameter. It may not be present by default. If not, add a key by the name AlwaysUnloadDLL and set it to value of 1.

This would inform OS to unload the DLL files from memory immediately. This has its advantages and disadvantages. It may also crash some Microsoft applications (like Access).

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Open Registry by going to START-RUN and typing REGEDIT. Navigate to [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management\IoPageLockLimit. Depending upon how much RAM you have, you can increase your diskcache size by entering a higher value in IoPageLockLimit. Typically your computer won't come optimized for diskcache and you can set to a value which works best for you by trial and error.Rule of thumb is to have a ratio of 1 or 2 for every 64K chuck. But try out various different values as each case would be a little different

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