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homelinen/testDiskSpeed.sh

Created January 3, 2013 13:17
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Short script to test read and write on a disk
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testDiskSpeed.sh
#!/bin/bash
# Some simple read and write tests using dd
# Write
echo "Write"
dd if=/dev/zero of=tempfile bs=1M count=1024 conv=fdatasync,notrunc
# Read Without Cache
echo "Read w/o Cache"
sudo echo 3 > sudo /proc/sys/vm/drop_caches
dd if=tempfile of=/dev/null bs=1M count=1024
# Read With Cache
echo "Read w/ Cache"
dd if=tempfile of=/dev/null bs=1M count=1024
# tempfile no longer needed
rm tempfile
@weakish
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weakish commented Mar 15, 2015

commit 462e5

Line 10

sudo echo 3 > sudo /proc/sys/vm/drop_caches

Second sudo is a typo.

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