heap_monitor.sh

#!/bin/sh

USAGE="Usage: $0 processName"

if [ $# -ne 1 ]; then
   echo $USAGE
   exit 1
fi


LOG_FILE="memusage.csv"
rm $LOG_FILE
echo "ElapsedTime,VmSize,VmRSS" > $LOG_FILE

ELAPSED_TIME=0
PERIOD=1        # seconds

# Monitor memory usage forever until script is killed
while :
do
   SUM_VM_SIZE=0
   SUM_RSS_SIZE=0
   SUM_THREADS_SIZE=0
   SUM_CPU=0
   PREV_TOTAL=0
   PREV_IDLE=0
   
   # In case the monitored process has not yet started
   # keep searching until its PID is found
   PROCESS_PIDS=""
   while :
   do
      PROCESS_PIDS=`pidof $1`
      
      if [ -z "$PROCESS_PIDS" ];then
         echo "nu such '$1' process "
          exit
      fi
        
      if [ "$PROCESS_PIDS.X" != ".X" ]; then
         break
      fi
   done
   

    for PID in ${PROCESS_PIDS} ; do
        c=`cat /proc/$PID/status`

        VM_SIZE=`echo "$c" | awk '/VmSize/ {print $2}' `

        if [ "$VM_SIZE.X" = ".X" ]; then
        continue
        fi
        #echo exprVM_ $SUM_VM_SIZE + $VM_SIZE
        SUM_VM_SIZE=`expr $SUM_VM_SIZE + $VM_SIZE`

        VM_RSS=`echo "$c" | awk '/VmRSS/ {print $2}'`
        if [ "$VM_RSS.X" = ".X" ]; then
        continue
        fi
        SUM_RSS_SIZE=`expr $SUM_RSS_SIZE + $VM_RSS`

        VM_THRDS=`echo "$c" | awk '/Threads/ {print $2}'`
        if [ "$VM_THRDS.X" = ".X" ]; then
        continue
        fi
        SUM_THREADS_SIZE=`expr $SUM_THREADS_SIZE + $VM_THRDS`
    done
    ########################################################################
    #CPU
    
    cpus=`top -b -n 1 | grep "[0-9][0-9]\.[0-9][0-9] $1" | awk '{print $9}'`
    SUM_CPU=0
    CPUS=0
    for cpu in $cpus; do
        ncpu=$((cpu+0))
        SUM_CPU=$((ncpu+SUM_CPU))
        CPUS=$((CPUS+1))
        #echo "cpu=" "$cpu and $SUM_CPU"
    done 

    #SUM_CPU=`expr $SUM_CPU+$DIFF_USAGE`
    TOTALRP=$((CPUS*SUM_THREADS_SIZE))
    ########################################################################        
   echo "VM: $SUM_VM_SIZE, RSS: $SUM_RSS_SIZE  THRDS: $SUM_THREADS_SIZE PROCS:$CPUS  TOTAL: $TOTALRP CPU%: $SUM_CPU" 
   sleep $PERIOD
   VM_SIZE=""
   VM_RSS=""
   VM_THRDS=""
   
   # Needs to get actual elapsed time instead of doing this
   ELAPSED_TIME=`expr $ELAPSED_TIME + $PERIOD`
done