Restart of System without Restarting, Defragmentation, Performance, DDR vs SDR
I have three questions regarding performance of windows xp.
Q.1. What is defragmentation and how much it effects the overall performance of system. There are four types of files allocation shown by disk defragmentater:
Fragmented files Contiguous files Unmovable files Free space
Can someone explain these types one by one.
Q.2. In the Performance Option of Windows properties in the Advanced tab. There is a virtual memory. Please guide me through this performace option. What is paging in detail. How it works. If I have 450 genuine intel processor with 256 of RAM then CAN paging optimize the performace.
Q.3. What is the differnce between SDR Ram and DDR Ram and what is 100 bus speed and 133 bus speed of a Ram.
Q. 4. Some programs required rebooting of system. Is there any way to do this without restarting the whole system and just refresh the system like closing the explorer.exe and running it again as I think the objective is refreshing the windows registry.