Virenk's Blog

Peak memory measurement for long running process (Linux)

Posted on: March 18, 2011

A script to measure peak memory usage of a process on Linux shell.

Source : http://stackoverflow.com/questions/1080461/peak-memory-measurement-of-long-running-process-in-linux

#!/bin/bash

ppid=$$
maxmem=0

$@ &
pid=`pgrep -P ${ppid} -n -f $1` # $! may work here but not later
while [[ ${pid} -ne "" ]]; do
    #mem=`ps v | grep "^[ ]*${pid}" | awk '{print $8}'`
        #the previous does not work with MPI
        mem=`cat /proc/${pid}/status | grep VmRSS | awk '{print $2}'`
    if [[ ${mem} -gt ${maxmem} ]]; then
    	maxmem=${mem}
    fi
    sleep 1
    savedpid=${pid}
    pid=`pgrep -P ${ppid} -n -f $1`
done
wait ${savedpid} # don't wait, job is finished
exitstatus=$?   # catch the exit status of wait, the same of $@
echo -e "Memory usage for $@ is: ${maxmem} KB. Exit status: ${exitstatus}\n"
Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s


  • None

Categories

%d bloggers like this: