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memUsage.py

A python script that monitors a process by PID (with all subprocesses) and a directory size by path, writes .log file with the following TAB-separated fields:

  • time, s
  • PID
  • available RAM, GB
  • resident RAM size, GB (the portion of RAM occupied by a process)
  • % of total RAM occupied by a process, %
  • % of CPU used by a process, %
  • size of given folder, GB
  • free disk space on partition with given folder, GB

This script also allows to plot the provided .log file.

This script works with both python2 and python3.

Dependencies:

  • psutil (always needed, tested for v5.6.1)
  • mathplotlib (only when plotting .log files)
  • pandas (only when plotting .log files)

For basic run only psutil package is needed (pip install psutil or sudo apt install python-psutil). Another way to install this package is:

wget -q "https://github.com/giampaolo/psutil/archive/release-5.6.3.tar.gz" -O "$HOME/psutil-release-5.6.3.tar.gz" \
&& tar -xzf "$HOME/psutil-release-5.6.3.tar.gz" \
&& cd "$HOME/psutil-release-5.6.3" \
&& python setup.py install \
&& cd "$HOME" \
&& rm -r "$HOME/psutil-release-5.6.3"