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Old 06-02-2011, 09:22 AM   #1
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Need explanation for TOP command


I need explanation for top command.

If ran the TOP command,on top it shows few options like




Can you pls tell me what is %us,%sys,%ni etc..

And also temme what are the available commands to see cpu utilization.
Old 06-02-2011, 09:34 AM   #2
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% User, %System % Nice %idle

They are showing you the percentage CPU utilisation for Processes running on your system (No, I don't know what "Nice" actually means.)
Have you checked out
man top
which will probably explain it better than I could here.

Play Bonny!
Old 06-02-2011, 09:36 AM   #3
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us -> User CPU time: The time the CPU has spent running users’ processes that are not niced.

sy -> System CPU time: The time the CPU has spent running the kernel and its processes.

ni -> Nice CPU time: The time the CPU has spent running users’ proccess that have been niced.

wa -> iowait: Amount of time the CPU has been waiting for I/O to complete.

hi -> Hardware IRQ: The amount of time the CPU has been servicing hardware interrupts.

si -> Software Interrupts.: The amount of time the CPU has been servicing software interrupts.

id is idle, in other words CPU idle status

st is Time stolen from a virtual machine. Prior to Linux 2.6.11, unknown
Old 06-02-2011, 09:37 AM   #4
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Check out 'man top'.

FYI: I suggest that you look at 'How to Ask Questions the Smart Way' so in the future your queries provide information that will aid us in diagnosis of the problem or query.

Just a few links to aid you to gaining some understanding;

1 Linux Documentation Project
2 Rute Tutorial & Exposition
3 Linux Command Guide
4 Bash Beginners Guide
5 Bash Reference Manual
6 Advanced Bash-Scripting Guide
7 Linux Newbie Admin Guide
8 LinuxSelfHelp
9 Utimate Linux Newbie Guide
10 Linux Home Networking
11 Virtualization- Top 10

The above links and others can be found at 'Slackware-Links'. More than just SlackwareŽ links!

"Knowledge is of two kinds. We Know a subject ourselves, or we know where we can find information upon it."- Samuel Johnson


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