Having some spare time to waste...
Bash scrip for benchmarking your SSD 
.
Sequential read benchmark.
Extracting text output from dd. Error if output differentiate.
- Save script to file [Example: test].
- Make executable.
- Run as root [sudo ./test /dev/sda]
Code:
Example: ./test [Path]
./test /dev/sda
Example: ./test [Path] [Graph limit (${max_speed}MB/s)]
./test /dev/sda ${max_speed}
Example: ./test [Path] [Graph limit (${max_speed}MB/s)] [Test file (${file_size}MB)]
./test /dev/sda $max_speed $file_size
PHP Code:
#!/bin/bash
# Created by: b2bde4
# Date (YYMMDD): 090609
# Link name: Guide Linux - Tips, tweaks and alignment
# Link: http://www.ocztechnologyforum.com/forum/showpost.php?p=396928&postcount=254
# Number of bars in graph.
bar_length=30
# Graph limit in MB/s
max_speed=300
# Test block size in kB.
block_table=( 2 4 8 16 32 64 128 256 512 1024 2048 4096 8192 )
# Test file size in MB.
file_size=100
# n
do_bar ()
{
echo -n [
for (( i=0; i<$1 && i<bar_length; i++)); do
echo -n =
done
for (( i; i<bar_length; i++)); do
echo -n " "
done
echo -n ]
}
# speed, block_size
do_print ()
{
a=$(( $1 * $bar_length / $max_speed ))
printf "%8s" "[${2}kB]"
do_bar $a
echo "[${1}MB/s]"
}
# path, block_size
do_test ()
{
count=$(( $file_size * 1024 / $2 ))
var=$(dd conv=nocreat iflag=direct if=$1 of=/dev/null bs=${2}k count=$count 2>&1)
start=-1;
while [ "${var: $start : 1}" != " " ]
do
start=$(( $start-1 ))
done
start=$(( $start-1 ))
stop=$start;
while [ "${var: $start : 1 }" != " " ]
do
if [ ${var: $start : 1 } == "," ] || [ ${var: $start : 1 } == "." ]
then
stop=$(( $start-1 ))
fi
start=$(( $start-1 ))
done
start=$(( $start+1 ))
return ${var: $start : $(( $stop - $start + 1 ))}
}
# Main.
if [ ! $1 ]
then
echo "Example: $0 [Path]"
echo " $0 /dev/sda"
echo "Example: $0 [Path] [Graph limit (${max_speed}MB/s)]"
echo " $0 /dev/sda ${max_speed}"
echo "Example: $0 [Path] [Graph limit (${max_speed}MB/s)] [Test file (${file_size}MB)]"
echo " $0 /dev/sda $max_speed $file_size"
exit
fi
if [ $2 ]
then
max_speed=$2
fi
if [ $3 ]
then
file_size=$3
fi
echo "[block_size][%][read_speed]"
echo "Graph limit: ${max_speed}MB/s"
echo "Test file: ${file_size}MB"
echo ""
#printf "%9s%${bar_length}s\n" "0" "${max_speed}MB/s"
for i in ${block_table[@]}; do
do_test $1 $i
do_print $? $i
done
I'll try to address some of them.
Originally Posted by Paul_one
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