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Full Discussion: Problem with nmon, actual CPU usage per process
Operating Systems AIX Problem with nmon, actual CPU usage per process Post 302777799 by zaxxon on Friday 8th of March 2013 11:43:28 AM
Old 03-08-2013
Problem with nmon, actual CPU usage per process
Hi all,

I am currently having trouble to get nmon to print me the actual CPU usage for an interval for a process.
According to the manual, something like
Code:
# time nmon -t -C cron -s 5 -c 2 -F outfile

real    0m0.98s
user    0m0.03s
sys     0m0.04s

should print out at least the process information about cron for an interval of 2 x 5 seconds.
I tried it without specifying which process (without -C) and other parameters, but no chance. I get the very general information about everyhting else in the output, but nothing about any processes.
Also what I do not understand is, why it always runs through in much less time than I specified with -s and -c.

I am currently on AIX 6100-06-05-1115, and I am not root. Though when I call nmon to be in it's online mode and press "t", I get the top view as non-root user.

Any help is welcome. Alternatives to get the current CPU usage for a process over a specified interval is welcome.
I also tried to get the information with pprof but it seems it's showing like ps some values (ACCT_TIME) which are not working for me at all, as this seems to be the usage over time since the process was started, which is not what I am looking for. I also checked tprof, but as it looks it only works for processes that are started with it, not for processes which are already running.

In the IBM DeveloperWorks Wiki I found Nigel Griffiths' entry for a C-program to get the process information (http://www.ibm.com/developerworks/wi.../wikiptype/ryo)
He states that you have to take at least 2 measures and calculate the difference (I guess you have to bring this into relation with other processes etc. too, since the values I got did not tell me much).
I am looking for an easier way if any.


Thanks in forward!
 

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LEARN ABOUT DEBIAN

wmbubble

WMBUBBLE(1x)															      WMBUBBLE(1x)

NAME

       wmbubble - system load monitor

SYNOPSIS

       wmbubble [options] [program1] [program2]

DESCRIPTION

       This  manual  page  documents briefly the wmbubble command.  This manual page was written for the Debian GNU/Linux distribution because the
       original program does not have a manual page.

       wmbubble is a dockapp-style CPU, memory, swap and load average monitor.	Based on the GNOME BubbleMon applet, this program has been consid-
       erably improved.

       The  higher  the  water level, the more memory is in use. The more profuse the bubbles, the higher the CPU usage. There is also a real-time
       CPU percentage display.

       When the mouse is moved into the window, the display will change to show the load history, or, if the right shift is held, the current mem-
       ory  usage.  If	you press the right mouse button, the window will freeze in that state. You can unfreeze the display by pressing the right
       mouse button again.

       program1 and program2 are the programs to spawn when either the left or middle mouse button is pressed, respectively.

OPTIONS

       -d     disable swimming duck

       -u     disable upside-down duck

       -c     disable CPU meter

       -m     disable memory screen

       -p     use alternative color scheme in memory info screen

       -k     display memory and swap statistics in megabytes

       -h     display help

AUTHOR

       wmbubble was written by timecop <timecop@japan.co.jp>

       This manual page was written by John H. Robinson, IV <jaqque@debian.org>, for the Debian GNU/Linux system (but may be used by others).

								  March 28, 2004						      WMBUBBLE(1x)
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