Here comes the answer (Largesystemcache):

http://technet.microsoft.com/en-us/...y/cc784562.aspx

value that MS suggest :

Windows XP Professional (or IIS, SQL): 0

Windows Server 2000 (or Windows 2003 on large network): 1 (詳情請點連結)

而若有多餘的RAM, 總是可以拿給RAMDISK去利用, 即使你的32bits OS 抓不到4GB以上

或是程式只能吃到2GB還有剩.

DisablePagingExecutive:

Specifies whether user-mode and kernel-mode drivers and kernel-mode system code can be paged to disk when not in use.

可保留預設值0 , 這個對效能影響有限. 若限制跑在RAM(設1)那可能效能略增,
但要保佑你的RAM永遠夠用.