"Cpu states" of top?

[Henry_18]

How to explain the "Cpu states" of top command?
I can not find the definition for NICE, BLOCK, SWAIT, INTR and SSYS column in top man page.

Any suggestion? Thanks a lot.

[Vijaya Kumar_3]

"man top" says this:

Percentage of time spent in each of the processor states (user, nice, system, idle, interrupt and swapper) per active processor on the system.

Some info from internet:

The first four states in the list below are found on most every Unix system. Other state names may appear on different platforms, and some of these are also listed below.

Idle = Nothing to do
User = Running a user's process
INTERRUPT = Kernel Handling a kernel call, fault, or interrupt
Nice = Running a user's niced process
Wait = Waiting on some form of i/o
iowait = Waiting on user i/o
Swap (SSYS) = Waiting on swapping or paging i/o

Hope this helps
vijay

[Sanjiv Sharma_1]

Hi Henry,

This link has answer for your query:
http://www.mcsr.olemiss.edu/cgi-bin/man-cgi?top+1

hth

[Henry_18]

Thanks a lot.

about the NICE column, I had test by running the script
##
while true
do
:
done
##
I didn't change nice value when I running this script.
but the cpu states of top at column NICE
is almost 100%

Is it priority value calculating load?