Sponsored Content
Full Discussion: Understanding "top" command
Operating Systems HP-UX Understanding "top" command Post 302676915 by methyl on Wednesday 25th of July 2012 09:35:59 AM
Old 07-25-2012
All of the performance statistics programs take statistics at a user-defined interval. If not, they would bombard the kernel with requests and make the computer slow.

Programs top and glance are designed for short-term monitoring of a server.
Programs vmstat iostat, and sar are suitable for long-term monoring as well as snapshots. Of these sar (see man sadc) is most suited for gathering historical statistics.

Might help if you mentioned what statistics you are looking at and why!


To answer your question, none of them are a continuous rolling average. Some of the figures in glance and top are cumulative since the monitoring began but details of individual processes come from the kernel's records since the process started (which could be months or years ago, depending on how often you boot your servers).

Last edited by methyl; 07-25-2012 at 10:52 AM..
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Any limitations to the "top" command?

Anyone know of any limitations? Also, does anyone know a great way to determine which processes are hogging CPU? TIA (6 Replies)
Discussion started by: lawadm1
6 Replies

2. Debian

Debian: doubt in "top" %CPU and "sar" output

Hi All, I am running my application on a dual cpu debian linux 3.0 (2.4.19 kernel). For my application: <sar -U ALL> CPU %user %nice %system %idle ... 10:58:04 0 153.10 0.00 38.76 0.00 10:58:04 1 3.88 0.00 4.26 ... (0 Replies)
Discussion started by: jaduks
0 Replies

3. UNIX for Dummies Questions & Answers

running command "top" in cron

hi all, i would like to collect stat. about the cpu usage every 30 mins so, I set up the cron job sth like 0,30 * * * * * /usr/bin/top -d 1 >> $STAT i know cron doesn't have a TERM output, so error occurs. any ideas or work around for this?? many thanks (3 Replies)
Discussion started by: freddy1228
3 Replies

4. UNIX for Dummies Questions & Answers

start top command in "solaris mode"

Ever noticed that using the top command on a multiple cpu box can often give totally misleading answers, like 230%, when you think that 100% should be the max? Well, that's because top has a bizarre mode called "Irix mode" wherein if you have 4 cpus, the %CPU column of top can go up to 400%. I... (1 Reply)
Discussion started by: fabulous2
1 Replies

5. AIX

AIX 5.3 - Discrepancies between "top" and "vmstat"

Can someone explain the differences I'm seeing below in TOP and VMSTAT commands on my AIX 5.3 server? Thanks! CPUs: 4; load averages: 0.86, 0.97, 0.97 18:09:26 926 processes: 4 stopped, 922 running CPU states: 78.4% idle, 8.5% user, 12.6% kernel, 0.3% wait Memory: 23680M Total.... (1 Reply)
Discussion started by: troym72
1 Replies

6. Shell Programming and Scripting

Retrieve RAM memory size from "top" command output

Hi, I am trying to get the system RAM size from "top" command's output by the following but it is not working. top | sed "s/^Mem.**\(*\), *//" (10 Replies)
Discussion started by: royalibrahim
10 Replies

7. Shell Programming and Scripting

awk command to replace ";" with "|" and ""|" at diferent places in line of file

Hi, I have line in input file as below: 3G_CENTRAL;INDONESIA_(M)_TELKOMSEL;SPECIAL_WORLD_GRP_7_FA_2_TELKOMSEL My expected output for line in the file must be : "1-Radon1-cMOC_deg"|"LDIndex"|"3G_CENTRAL|INDONESIA_(M)_TELKOMSEL"|LAST|"SPECIAL_WORLD_GRP_7_FA_2_TELKOMSEL" Can someone... (7 Replies)
Discussion started by: shis100
7 Replies

8. UNIX for Dummies Questions & Answers

How to put "top" command in crontob?

Hi, how to put "top" command in crontab through script in suse linux. Below script is working fine, but it is not working when sheduled in crontab script scheduled in cron: health.sh --------- #! /bin/ksh top |head -5 >output.txt Thanks Suresh (3 Replies)
Discussion started by: suresh3566
3 Replies

9. UNIX for Dummies Questions & Answers

Using "mailx" command to read "to" and "cc" email addreses from input file

How to use "mailx" command to do e-mail reading the input file containing email address, where column 1 has name and column 2 containing “To” e-mail address and column 3 contains “cc” e-mail address to include with same email. Sample input file, email.txt Below is an sample code where... (2 Replies)
Discussion started by: asjaiswal
2 Replies

10. UNIX for Advanced & Expert Users

Understanding output of "last" command

Hello, Been looking through Google, and I don't see a direct answer to this: # last ... abcd pts/1 srever02 Mon Feb 23 07:56 - 07:56 (00:00) abcd sshd server02 Mon Feb 23 07:56 - 07:56 (00:00) klmn sshd ... (2 Replies)
Discussion started by: kitykitykity
2 Replies
PAPS(1) 						      General Commands Manual							   PAPS(1)

NAME
paps - UTF-8 to PostScript converter using Pango SYNOPSIS
paps [options] files... DESCRIPTION
paps reads a UTF-8 encoded file and generates a PostScript language rendering of the file. The rendering is done by creating outline curves through the pango ft2 backend. OPTIONS
These programs follow the usual GNU command line syntax, with long options starting with two dashes (`-'). A summary of options is included below. --landscape Landscape output. Default is portrait. --columns=cl Number of columns output. Default is 1. --font=desc Set the font description. Default is Monospace 12. --rtl Do rtl layout. --paper ps Choose paper size. Known paper sizes are legal, letter, a4. Default is A4. --bottom-margin=bm Set bottom margin in postscript points (1/72 inch). Default is 36. --top-margin=tm Set top margin. Default is 36. --left-margin=lm Set left margin. Default is 36. --right-margin=rm Set right margin. Default is 36. --help Show summary of options. --header Draw page header for each page. --markup Interpret the text as pango markup. --encoding=ENCODING Assume the documentation encoding is ENCODING. --lpi Set the lines per inch. This determines the line spacing. --cpi Set the characters per inch. This is an alternative method of specifying the font size. --stretch-chars Indicates that characters should be stretched in the y-direction to fill up their vertical space. This is similar to the texttops behaviour. AUTHOR
paps was written by Dov Grobgeld <dov.grobgeld@gmail.com>. This manual page was written by Lior Kaplan <kaplan@debian.org>, for the Debian project (but may be used by others). April 17, 2006 PAPS(1)
All times are GMT -4. The time now is 08:43 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy