Speed up Diskcache TOP
Open Regedit
[HKEY_LOCAL_MACHINESYSTEM/CurrentControlSet/ControlSession/ Manager/MemoryManagement/IoPageLockLimit];
Modify the value in Hex depending on the size of your RAM
RAM: modified value(Hex)
64M: 1000;
128M: 4000;
256M: 10000;
512M or more: 40000.
Reboot.