Scripting for monitoring the memory usage of some processes

Hi All
I need a script which monitors the memory usage of the machine for some specific processes.

Something like

./CheckUtilisation.sh <process handle> <threshold>

and it outputs let's say "Yes" if threshold exceeeds.

Regards
Khem
LVL 2
k_suchdevaAsked:
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blowfishCommented:
Hi,  

The answer proposed by emrehayretci, uses the vmstat command to display the machine's virual memory and CPU statistics.  If you want to monitor resource usage of a process, then you need to use the ps command.  So, here is a solution to your question.  You could read the man page for ps, for more information regarding the command line options.  

I'm not sure what you mean by <process handle>, so I'm going to assume that you meant process-id, or, PID.  Memory usage can be reported as a process's total virtual size (VSZ), or it's current resident memory size (RSS).  I will assume that you want to monitor it's total virtual size.  

To get a detailed (-f for full) list of all (-e for everything) processes on the machine, use the command:

  ps -ef

This listing however does not give you the memory usage that you are looking for, so, you'll have to use the -o command line option.  The -o command line option tells ps what colums to display in it's output.  You will need to use the following command to list all processes, the user, the process-id, the virtual size (kb), and the command-line arguments:

  ps -e -o user,pid,vsz,args

Now that you can list the information, we need to wrap it in a script that can extract the details of the processes that you are interested in.  

For something like this, I usually use awk.  Awk is a natural when it comes to selecting data that is presented in columns.  Let's say that you want to monitor all of root's processes, and report on any that are bigger than 1024kb:

while :
do
  ps -e -o user,pid,vsz,args | awk '$1 ~ /root/ && $3 > 1024 {print}'
  echo "  sleeping ..."
  sleep 30
done

Hope this helps,

--frankf
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OtetelisanuCommented:
Install

application RMCmem         The MemTool Package

and you have all for memory.

Example:
memps ang gui programms.
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k_suchdevaAuthor Commented:
I only want a simple script.

Can not install third party packages.
0
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OtetelisanuCommented:
what is your Solaris ???

2.6, or 2.7 or 2.8 or 2.9
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k_suchdevaAuthor Commented:
uname -a
SunOS XXXXXXX 5.7 Generic_106541-16 sun4u sparc SUNW,Ultra-80


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ahoffmannCommented:
not for a specified process, but probably worth looking at it:
   man sar
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emrehayretciCommented:
Improve the following script. It should help you.


frequency=3

while (true); do
STATUS=`vmstat $frequency 3| awk -e '{print $5}'`
LASTSTATUS=`echo $STATUS| awk -e '{print $5}'`
if [ $LASTSTATUS -lt <put your trshhold>]; then
    echo "TreshHold Exceeds"
    <write want to want to do in here(i.e. send mail to
    someone)>
fi

done
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tfewsterCommented:
No comment has been added lately, so it's time to clean up this Topic Area.
I will leave a recommendation for this question in the Cleanup topic area as follows:

- Answered by blowfish

Please leave any comments here within the next 7 days

PLEASE DO NOT ACCEPT THIS COMMENT AS AN ANSWER !

tfewster
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SpideyModCommented:
per recommendation

SpideyMod
Community Support Moderator @Experts Exchange
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