hddBench_smallFiles.sh

#!/bin/bash
if [ -z "$1" ]; then
  echo "Please supply target device"
else
  echo "running test on '$1'"
  numberRuns=$3
  if [ -z "$numberRuns" ]; then
    numberRuns=5
    echo "running $numberRuns times (default)"
  else
    echo "running $numberRuns times"
  fi
  blocks=$4
  if [ -z "$blocks" ]; then
    blocks="2000"
    echo "using size $blocks (default)"
  else
    echo "using size $blocks"
  fi
  outFile=$2
  if [ -n "$outFile" ]; then
    echo "logging to $2"
  else
    echo "no logfile supplied => /dev/null"
    outFile="/dev/null"
  fi
  outFileOrig=$outFile
  outFile="$outFileOrig-write"
  echo "$numberRuns runs of $blocks * 512 Bytes to $1" > $outFile
  for i in {1..5}
  do
    dd if=/dev/zero of=$1 bs=512 count=$blocks conv=fdatasync >> $outFile 2>&1
  done

  echo "summary of large files" >> $outFile
  cat $outFile | grep "copied" | sed 's/.*, //g' >> $outFile
  avg=$(cat $outFile | grep "copied" | sed 's/.*, //g' | sed 's/ MB\/s//g' | paste -sd+ | bc | awk -v var="$numberRuns" '{print $1"/"var}' | bc -l)
  echo "average: $avg MB/s" >> $outFile
  echo "$avg" >> $outFile
  
  outFile="$outFileOrig-read"
  echo "$numberRuns runs of $blocks * 512 Bytes to $1" > $outFile
  for i in {1..5}
  do
    dd if=$1 of=/dev/null bs=512 count=$blocks conv=fdatasync >> $outFile 2>&1
  done

  echo "summary of large files" >> $outFile
  cat $outFile | grep "copied" | sed 's/.*, //g' >> $outFile
  avg=$(cat $outFile | grep "copied" | sed 's/.*, //g' | sed 's/ MB\/s//g' | paste -sd+ | bc | awk -v var="$numberRuns" '{print $1"/"var}' | bc -l)
  echo "average: $avg MB/s" >> $outFile
  echo "$avg" >> $outFile
fi