|
|
Sponsored Content
Operating Systems
Linux
Red Hat
Using "ps" command to find high processes
Post 302826725 by zaxxon on Thursday 27th of June 2013 07:40:27 AM
06-27-2013
Sorry but that is usually not helping. It is exact the problem I formerly described. You just display the CPU usage of the process, since the process has been started and so with an average. An average over such a long time/interval never gets peaks of any kind. They will be flattened away. I saw Nagios-plugins, that used something like that, but they are useless in terms of alarming threshold of unwanted kinds of peaks for example.
Example:
So when a process runs for 20 hours now, with a CPU usage of 40% and then another hour with 99%, you will get displayed a somewhat constant value which is the average of 21 hours which would be (20*40 + 1*99) / 21 = 42.8%.
If you take this to decide if you kill a process, then good night
Sorry but, I strongly doubt that your ps helps you at all for this.
Maybe check out the top -b I mentioned.
The C column Robin stated is helpful too, but as he discribed is hard to set into relation to other processes and has to be monitored over some time to get a feeling for what is high and what is low.
Example:
So when a process runs for 20 hours now, with a CPU usage of 40% and then another hour with 99%, you will get displayed a somewhat constant value which is the average of 21 hours which would be (20*40 + 1*99) / 21 = 42.8%.
If you take this to decide if you kill a process, then good night
Sorry but, I strongly doubt that your ps helps you at all for this.
Maybe check out the top -b I mentioned.
The C column Robin stated is helpful too, but as he discribed is hard to set into relation to other processes and has to be monitored over some time to get a feeling for what is high and what is low.
|
|
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Dear friends,
please tell me how to find the files which are existing in the current directory, but it sholud not search in the sub directories..
it is like this,
current directory contains
file1, file2, file3, dir1, dir2
and dir1 conatins
file4, file5
and dir2 contains
file6,... (9 Replies)
Discussion started by: swamymns
9 Replies
2. UNIX for Advanced & Expert Users
I have three files a.txt , b.txt , c.txt in a directory called my_dir1 .These files were created before two or three months . I have a tar file called my_tar1.tar which contains three files a.txt , b.txt , d.txt . Somebody untarred the my_tar1.tar into my_dir1 directory. So existing two files were... (1 Reply)
Discussion started by: joe.mani
1 Replies
3. Shell Programming and Scripting
I have high values (such as ˙˙˙˙) in a text file contained in an Unix AIX server. I need to identify all the records
which are having these high values and also get the position/column number in the record structure if possible. Is there
any Unix command by which this can be done to :
1.... (5 Replies)
Discussion started by: devina
5 Replies
4. Shell Programming and Scripting
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
5. Shell Programming and Scripting
I want to list all files/lines which except those which contain the pattern ' /proc/' OR ' /sys/' (mind the leading blank).
In a first approach I coded:
find / -exec ls -ld {} | grep -v ' /proc/| /sys/' \; > /tmp/list.txt
But this doesn't work. I got an error (under Ubuntu):
grep:... (5 Replies)
Discussion started by: pstein
5 Replies
6. Shell Programming and Scripting
Hello everyone
Sorry I have to add another sed question. I am searching a log file and need only the first 2 occurances of text which comes after (note the space) "string " and before a ",". I have tried
sed -n 's/.*string \(*\),.*/\1/p' filewith some, but limited success. This gives out all... (10 Replies)
Discussion started by: haggismn
10 Replies
7. Shell Programming and Scripting
I have a bunch of random character lines like ABCEDFG. I want to find all lines with "A" and then change any "E" to "X" in the same line. ALL lines with "A" will have an "X" somewhere in it. I have tried sed awk and vi editor. I get close, not quite there. I know someone has already solved this... (10 Replies)
Discussion started by: nightwatchrenba
10 Replies
8. Shell Programming and Scripting
Hi there,
I am eager to know what exactly is the use of "finger" command & how to use it to kill the online processes ? :b: (1 Reply)
Discussion started by: abhijitpaul0212
1 Replies
9. UNIX for Dummies Questions & Answers
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. Shell Programming and Scripting
These three finds worked as expected:
$ find . -iname "*.PDF"
$ find . -iname "*.PDF" \( ! -name "*_nobackup.*" \)
$ find . -path "*_nobackup*" -prune -iname "*.PDF"
They all returned the match:
./folder/file.pdf
:b:
This find returned no matches:
$ find . -path "*_nobackup*" -prune... (3 Replies)
Discussion started by: wolfv
3 Replies
LEARN ABOUT DEBIAN
loadwatch
LOADWATCH(1) General Commands Manual LOADWATCH(1) NAME
loadwatch - run a program when machine is idle SYNOPSIS
loadwatch [options] -p pid | [--] prog [args] DESCRIPTION
loadwatch either spawns a child process prog with the arguments args and controls it with all its process group, or takes control of an already running process with pid pid with all its process group. loadwatch allows the controlled processes to run while the load average remains below high_limit. Every delay seconds, loadwatch checks the load average. If the load is above high_limit, the child is suspended; the child is resumed when the load falls below low_limit. OPTIONS
A summary of options is included below. -h high_limit A decimal value that sets the system load at which the child process will be suspended. (Default: 1.25) -l low_limit A decimal value that sets the system load at which the child process will be resumed. (Default: 0.25) -d delay An integral number of seconds that sets how often the system load will be checked. (Default: 10) -n copies An integer value that sets the number of copies of prog to run. (Default: 1) -u file Create a UNIX domain socket file for use by lw-ctl. -p pid The pid of the program that should be controlled by loadwatch (with all its process group). SEE ALSO
lw-ctl(1), nice(1) BUGS
You should choose low_limit and high_limit carefully. When the load drops below low_limit, the process(es) will be resumed, and it should not, by itself, cause the load to raise above high_limit, or the whole will oscillate, periodically suspending and resuming the process(es). Similarly, if several instances of loadwatch are running, they may resume their processes at the same time, leading to oscillations if the limits are not carefully chosen. Hence, each instance of loadwatch affects every other instance on the computer, and should not be consid- ered in isolation. AUTHOR
This manual page was written by Dale E. Martin <dmartin@debian.org>, for the Debian GNU/Linux system (but may be used by others). It was then updated by Nicolas Boullis <nboullis@debian.org>. July 2003 LOADWATCH(1)