ps_mem
A utility to accurately report the core memory usage for a program
Yes the name is a bit weird. coremem would be more appropriate,
but for backwards compatible reasons the ps_mem name remains.
Install:
pip install ps_mem is supported, or rpm and deb packages
are available for most distros.  Also the ps_mem.py script
can be run directly.
Usage:
ps_mem [-h, --help] [-p PID,...] [-s, --split-args] [-t, --total] [-w N]
       [-d, --discriminate-by-pid] [-S, --swap]
Example output:
 Private  +   Shared  =  RAM used       Program
 34.6 MiB +   1.0 MiB =  35.7 MiB       gnome-terminal
139.8 MiB +   2.3 MiB = 142.1 MiB       firefox
291.8 MiB +   2.5 MiB = 294.3 MiB       gnome-shell
272.2 MiB +  43.9 MiB = 316.1 MiB       chrome (12)
913.9 MiB +   3.2 MiB = 917.1 MiB       thunderbird
---------------------------------
                          1.9 GiB
=================================
The [-p PID,...] option allows filtering the results.
For example to restrict output to the current $USER you could:
sudo ps_mem -p $(pgrep -d, -u $USER)
or to summarize the total RAM usage per user you could:
for i in $(ps -e -o user=, sort, uniq); do
  printf '%-20s%10s\n' $i $(sudo ps_mem --total -p $(pgrep -d, -u $i))
done
 projecs by owner
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                                                                projecs by owner
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