How to monitor a process memory utilization?

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Homework and Emergencies Emergency UNIX and Linux Support How to monitor a process memory utilization?

12-08-2009

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How to monitor a process memory utilization?

hi frnds,

I want to monitor a particular process very closly on how much memory it is taking. i tried with TOP and PRSTAT commands that is not giving what exactly i need. In my application, there is a memory leak happening, i want to know when it is occuering, means which transcation is causing that leak?

thanks in advance...

vij_krr

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12-08-2009

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i wonder why does not top is not giving you the expected ? -- it should !

Anyway try pmap, check the #10 in this article for more clarification: 20 Linux System Monitoring Tools Every SysAdmin Should Know

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Quote:

Originally Posted by vij_krr

hi frnds,

I want to monitor a particular process very closly on how much memory it is taking. i tried with TOP and PRSTAT commands that is not giving what exactly i need. In my application, there is a memory leak happening, i want to know when it is occuering, means which transcation is causing that leak?

thanks in advance...

maybe try using trace. from my understanding trace is supposed to log application execution. here is some info about it. trace - Linux Command - Unix Command

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What about ps?

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From your mention of prstat I assume you are on Solaris. If that is the case, dtrace is the tool to use.

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12-09-2009

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Assuming none of the above are suitable, you can add this command to run every minute in your crontab:

Code:

ps  -o pid,addr,vsz,osz,rss,pmem,ltime,args -p pid >>/var/log/ps.log

If you don't know ahead of time the pid of the process, you can use:

Code:

pid=`ps -eo pid,comm | awk '$2 == name { print $1 }' name=command-name`

and use $pid in the cronjob command.

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12-10-2009

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Try top

TOP should be giving the results you expecting.For such memory leak cases I use TOP Only.Jus try TOP -n 50 or 100 | grep <pid>.

If your are debugging a C++ application,put your application under dbx and this method should definitely work.

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