Bash script to test sequential IO (read and write) and read IOPS using ioping utility

measure_io.sh

#!/bin/bash
# Test sequential IO (read and write) and read IOPS
# Creates CSV and HTML output
# Usegu: ./measure_io.sh [DIRECTORY]

CWD=$1
[ $# -lt 1 ] && CWD=$(pwd)
ioping -h 2> tmpfile
[ $? -ne 0 ] && echo ioping not found--"sudo apt-get install ioping" or download here: https://code.google.com/p/ioping/ && exit 1
rm tmpfile

TEST_TIME=10
TS=$(date +"%Y%m%d-%H%M%S")

create_html() {
    # Called at end to convert csv files to html tables
    OUT_FILE=sequential.$TS.csv
    echo Creating sequential.$TS.html
    ./csv2html.sh $OUT_FILE > sequential.$TS.html
    if [ $? -ne 0 ] 
    then
        echo ERROR--csv2html not found.  Downloading...
        wget https://gist.githubusercontent.com/jschaub30/c67cf9e214d83accd4db/raw/fe9ce4bb916b6b0fc431e36172bace18bc88b925/csv2html.sh
        chmod u+x csv2html.sh
        ./csv2html.sh $OUT_FILE > sequential.$TS.html
    fi
    OUT_FILE=iops.$TS.csv
    echo Writing to iops.$TS.html
    ./csv2html.sh $OUT_FILE > iops.$TS.html
}
trap 'create_html' SIGTERM SIGINT # Create html files if killed early

echo ;echo "######################## SEQUENTIAL TESTS ########################"
OUT_FILE=sequential.$TS.csv
echo Writing to $OUT_FILE
echo "Block size [MB],Read throughput [MBps],Write throughput [MBps]" > $OUT_FILE
for BS in 1 4 16 64 256
do
  echo ---------------------
  echo Sequential read,  directory=\"$CWD\", block size=$BS MB
  READ=$(ioping -B -q -i 0 -w $TEST_TIME -s ${BS}M -D $CWD | cut -d' ' -f 4)
  echo Sequential write, directory=\"$CWD\", block size=$BS MB
  WRITE=$(ioping -B -q -i 0 -w $TEST_TIME -s ${BS}M -D -W $CWD | cut -d' ' -f 4)
  echo $BS,$((READ/1000000)),$((WRITE/1000000)) >> $OUT_FILE
done

echo ;echo "######################## READ IOPS TEST ########################"
OUT_FILE=iops.$TS.csv
echo Writing to $OUT_FILE
echo "Block size [KB],IOPS" > $OUT_FILE
for BS in 1 4 16
do
  echo ---------------------
  echo IOPS, directory=\"$CWD\", block size=$BS KB
  IOPS=$(ioping -B -q -i 0 -w $TEST_TIME -s ${BS}k -S $((BS*16))m $CWD | cut -d' ' -f 3)
  echo $BS,$IOPS >> $OUT_FILE
done

create_html