Memory consumption on a per user basis

[Boruch Baum]

On 2018-11-11 16:36, Josh Roden wrote:
>    Hi everyone
>    I have a CentOS 6 machine used by around 20 to 30 students
>    at a time and I need to do one of two things:
>    1. find and kill top memory user with script

You can use 'smem'[1] to ferret out the process hogging the most memory
by as computed by 'proportional set size'[2]. A basic command to
retrieve the worst offending PID would be:

   smem -c pid | tail -n1

How about this for a simple script?:

  NAUGHTY="$(smem -c pid | tail -n1)"
  for SIG in 15 15 15 9 9
  do
    kill -$SIG $NAUGHTY
    printf "Sending signal $SIG to process $NAUGHTY\n"
    sleep 1
    ps -$naughty || exit
    printf "Process $NAUGHTY is Still alive\n"
  done


[1] https://www.selenic.com/smem/
[2] https://en.wikipedia.org/wiki/Proportional_set_size
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