memprof

#!/bin/bash

## This is a simple script for recording the memory usage of a process over time.
## LINUX ONLY!

#echo " ** memprof: Launching command $1"> /dev/stderr

########################################
# Relegate all its output to stdout, so that we can put ours to stderr.
$* &> /dev/stdout &
#$* &
########################################

PID=$!
#echo " ** Pid of child $PID" > /dev/stderr

JOBNUM=1

#echo "# ProgSize MemSize SharedPages CodePages DataPages LibPages DirtyPages"


echo "# Selected fields from /proc/$PID/status: " >> /dev/stderr

#PAT="Vm(HWM|RSS|Data|Stk|Exe|Lib)"
PAT="(Vm(HWM|RSS|Data|Stk|Exe|Lib))|Threads"

header=`egrep "$PAT" /proc/$$/status | awk '{ print $1 }' | xargs echo `

echo "# $header" >> /dev/stderr

function printstats () {
  #stats=`egrep "Vm(HWM|RSS|Data)" /proc/$PID/status`
  #stats=`egrep "Vm(HWM|RSS|Data|Stk|Exe|Lib)" /proc/$PID/status | awk '{ print $2 }' | xargs echo `

  egrep "$PAT" /proc/$PID/status | awk '{ print "  "$2 }' | xargs echo >> /dev/stderr

  ##echo $stats | awk '{ print $2" "$5" "$8 }' > /dev/stderr
}

#echo "# PeakMem ResidentMem DataMem" > /dev/stderr
while [ "`jobs -r`" != "" ];
do 
  printstats

  sleep 1
done

#printstats

wait $PID
#kill $PID