How to check the CPU usage on your computer to see how well it’s performing

You can check your CPU usage on a PC or Mac using programs already installed on your computer, like the Task Manager and ...
Ars Technica

system idle process in XP@ 99% cpu usage?

If I goto the task manager it says there is a process called "system idle process" and it is always at 95-100% cpu usage. However, if I look at the graph of cpu usage it shows that it is only at like ...
Ars Technica

CPU usage=65% while idle process=99%, how?

So what's likely the cause of such behavior? A bad driver? Any way to find out which? Clearly, based on how sluggish my system is the CPU is at 65% even though the process window shows only the idle ...
Sydney Morning Herald

Task manager may be idle but it's always ready to roll

Add articles to your saved list and come back to them any time. A. What you see is quite normal. The System Idle Process of 99 per cent means that the CPU is lightly loaded with only 1 per cent of its ...