LinuxQuestions.org
Help answer threads with 0 replies.
Go Back   LinuxQuestions.org > Forums > Linux Forums > Linux - Newbie
User Name
Password
Linux - Newbie This Linux forum is for members that are new to Linux.
Just starting out and have a question? If it is not in the man pages or the how-to's this is the place!

Notices


Reply
  Search this Thread
Old 05-28-2011, 12:10 PM   #1
stf92
Senior Member
 
Registered: Apr 2007
Location: Buenos Aires.
Distribution: Slackware
Posts: 3,485

Rep: Reputation: 51
Top: meaning of some abbreviations in the summary area.


Kernel 2.6.21.5, Slackware 12.0
top: procps 3.2.7

Hi:
Running top, I read, in the summary area,
Code:
root@darkstar:~# top
........
Cpu(s):  1.7%us,  0.3%sy,  0.0%ni, 97.7%id,  0.0%wa,  0.3%hi,  0.0%si,  0.0%st
.........
root@darkstar:~#
I have inspected top's man page all through, looking for the meaning of us, sy, ..., st and I haven't been able to find it. Falling back to wikipedia, I found a link to the man page, but it was dated September 2002, same as my own man page. Then I went to procps' site> FAQ, with no better success.

In my system, top is contained in the procps-3.2.7-i486-2 package. So I looked into the package listing, but I couldn't find any info file (those files that are read by means of the info command). I could look under /usr/doc, in the corresponding subdirs but I know before hand such details will not be dealt with there.

I find it hard to believe that the abbreviations mentioned above are not explained anywhere. Could you give me a source for such information? Thanks.
 
Old 05-28-2011, 12:27 PM   #2
bsdunix
Senior Member
 
Registered: May 2006
Distribution: Caldera, CTOS, Debian, FreeBSD, Mac OS X, Mandrake, Minix, OpenBSD, Slackware, SuSE
Posts: 1,757

Rep: Reputation: 80
These explain it:

http://www.amath.washington.edu/~rjl.../html/top.html

http://www.unixtutorial.org/commands/top/

Here are the explanations for each parameter:

us - User CPU time. The time the CPU has spent running users’ processes with default priorities
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 prioritized up using nice command
id - Time spent idle
wa - I/O wait. Amount of time the CPU has been waiting for I/O operations 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
st - Steal Time. The amount of CPU ’stolen’ from this virtual machine by the hypervisor for other tasks (such as running another virtual machine) – a fairly recent addition to the top command, introduced with the increased virtualization focus in modern operating systems

Last edited by bsdunix; 05-28-2011 at 12:41 PM. Reason: Added explainations for the LQ archives
 
Old 05-28-2011, 12:49 PM   #3
stf92
Senior Member
 
Registered: Apr 2007
Location: Buenos Aires.
Distribution: Slackware
Posts: 3,485

Original Poster
Rep: Reputation: 51
Thanks bsdunix. I will add the URLs of these two sites to my list of useful sites and, specially, copy the text beneath them to a file. I would like to know who is to blame for this omission in the man page. The GNU Project? Again, thanks for your kind reply.

Last edited by stf92; 05-28-2011 at 12:54 PM.
 
  


Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off



Similar Threads
Thread Thread Starter Forum Replies Last Post
Inserting a smilie scrolls the post writing area to top gkiagia LQ Suggestions & Feedback 0 07-28-2006 12:29 PM
Top Summary Area jdpatterson Linux - Newbie 2 08-26-2005 01:55 AM
Desk top area sizing in SUSE 9.0 Bill Swarat Linux - Newbie 0 09-26-2004 10:57 AM
What are all these abbreviations/acronyms anyway? vharishankar General 1 09-18-2004 05:54 AM
Searching on abbreviations and anagrams Bert LQ Suggestions & Feedback 1 09-12-2002 02:17 PM


All times are GMT -5. The time now is 06:17 AM.

Main Menu
Advertisement
My LQ
Write for LQ
LinuxQuestions.org is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
Syndicate
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration