Thread: What does the cpu usage in performance tab of task manager in windows xp signify?

Hi Friends,
When the computer is in idle mode the cpu usage in performance tab of the task in windows xp is sometimes 2% and sometimes 30% .

pls reply my opreating system experts Portable Hard Drive||USB Hard Drive||Sata Hard Drive

Hi guys

Function

The CPU is the real brain of a computer and coordinates all the parts of a computer that allows it to function. It also handles all the instructions from any software programs that are running. How much work it is doing is called usage.
Finding usage

Locate the computer's task manager program. "Ctrl-alt-del" is the shortcut to the program. Click the performance tab. You will see a real-time illustration with percentages displayed. Those numbers are the amount of the CPU's computing power that is being used.
High usage

When multiple programs are running simultaneously, the time it takes for each operation to be performed increases and the usage level climbs.
Gauging usage

When a computer becomes sluggish after several hours of working correctly, chances are too many things are asking for the CPU's attention. You can also check the task manager.
Regulation

By accessing the task manager and opening the processes window, you can see all the tasks that the CPU is working on. By clicking and closing tasks that are unneeded, you can increase the computer's speed.


Thanks for all friends

so do you say that running n number of program's at a time will give lot of pressure to cpu.