hafijur :
That means your cpu usage is a very low 1% lmao. What you want to do/know. You do realise high system idle process means out of 100 how much of the cpu is not being used.
Dear Hafijur,
"System idle" means that the "system" is idle, the CPU was running very hard to stand still responding to queries from the hardware driver, and this was shown by high CPU Usage data on the bottom of the Task manager window while "system idle was 98%, in total about 150% so obviously wrong, they don't add up.
System idle is just 100- (the time used by processes detailed in task manager processes), it doesn't include background interrupts. If you run "process explorer" which provides more detail than task manager it shows the interupts as well.
In my case the CPU was so busy talking to the HDD instead of allowing direct memory access that it had not got time left to respond to the mouse.
Anyway, it is fixed now by reinstalling the IDE controller driver. There was one account of a usb driver doing something similar.
There are lots of examples on the web, but scattered all over the show, and only one with the answer in 2006:
FrazzledDad: Lousy Performance, High Hardware Interrupt Usage
Google it or go to
frazzleddad.blogspot.com/..search for lousy-performance-high-hardware.html