Changes

Winter 2009 SYA810 Block Device Benchmark Scripts

689 bytes added, 09:40, 2 February 2009

→‎Varinder Singh

Script in Python.Any suggestions would be welcome

=Kezhong Liang=

#!/bin/bash

echo "Start to test ..."

TIME_WRITE_START=$(date +%s)

dd if=/dev/zero of=test bs=1024 count=1000000

sync

TIME_WRITE_END=$(date +%s)

echo 3 > /proc/sys/vm/drop_caches

sync

TIME_READ_START=$(date +%s)

dd if=test of=/dev/null bs=1024 count=1000000

TIME_READ_END=$(date +%s)

rm test

echo "--------------------------------------------------------"

TIME_WRITE_USED=$(($TIME_WRITE_END - $TIME_WRITE_START))

echo -n "The write disk performance: "

echo -n $((1024 / $TIME_WRITE_USED))

echo " MB/sec"

TIME_READ_USED=$(($TIME_READ_END - $TIME_READ_START))

echo -n "The read disk performance: "

echo -n $((1024 / $TIME_READ_USED))

echo " MB/sec"

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