#/bin/sh

################################################
# Author: eos
# Date: 13 March 2009
# Script to set off ps process system monitors
#
# Usage
# -----
# $0 <base output filename> <sample interval> <no samples>
#

#useage message
if [ $# -eq 0 ]; then
echo -e "
Usage:

$0m  <filename> <sample interval> <no samples>

e.g.
nohup $0 test1 20 100 &

will initialise ps taking 100 samples at 20 second intervals.

NOTE NOTE NOTE:
Use \"nohup\" before command
Execute in background with \" &\"
This is to allow shell to continue execution if connection is broken
"
exit
fi


#Set UNIX95 Env Variable
#export UNIX95=1;

hostname=`hostname` #Get hostname to place in output files

#variable assignments and calculations
prefix=$1"."$hostname
no_samples=$3
sleeptime=$2

#Calculate a suitable sample interval at which to run "who"
totaltime=`echo "$no_samples*$sleeptime" | bc`

psfilename=$prefix".mem.ps"
psfilename2=$prefix".cpu.ps"

if [ -f $psfilename ]; then rm $psfilename; fi
if [ -f $psfilename2 ]; then rm $psfilename2 ; fi

echo "PID PhyPages VirtkB %MEM CPUTime User Args" >> $psfilename
echo "PID PPID pcup Time CPUTime Args" >> $psfilename2 

pstime=0
while (( $pstime<=$totaltime )); do
pstime=`echo " $sleeptime+$pstime " | bc `;
date +'%H:%M:%S %b %d %y %Z' >> $psfilename;
ps -eo pid,sz,vsz,%mem,time,user,args | sort -nr -k 2,3| head -60 >> $psfilename;
date +'%H:%M:%S %b %d %y %Z' >> $psfilename2;
ps -eo pid,ppid,%cpu,time,cputime,args | sort -nr -k 3 | head -60 >> $psfilename2;
sleep $sleeptime;
done