Difference between revisions of "Winter 2009 SYA810 Block Device Benchmark Scripts"
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Please post your block device benchmark script here. I'm looking for a wide range of benchmark methodologies, so your script should test in a different way than the other scripts. I will collect these scripts on '''Monday, Jan 26''' and create a master script which runs all of these tests and reports the overall results. | Please post your block device benchmark script here. I'm looking for a wide range of benchmark methodologies, so your script should test in a different way than the other scripts. I will collect these scripts on '''Monday, Jan 26''' and create a master script which runs all of these tests and reports the overall results. | ||
| − | = | + | = P. Constantino = |
| − | + | #!/bin/bash | |
| + | # This script generate random numbers and seeks to that POSITION on the block device given, reading 1 kb of data at the time. | ||
| + | # The purpose is test the speed of randomly reading 1024(default) blocks of 1KB from the disk. | ||
| + | # A valid input for BLOCK DEVICE could be: /dev/sdb (disk) - /dev/sda9 (partition) - /dev/md8 (RAID) - /dev/mapper/foo/bar (LV). | ||
| + | echo -n "Enter a number of block to read. Enter for default(1024): " | ||
| + | read BLOCKS | ||
| + | if [ "$BLOCKS" = "" ] | ||
| + | then | ||
| + | BLOCKS=1024 | ||
| + | fi | ||
| + | echo -n "Enter a valid block device (dev/): " | ||
| + | read BLOCKDEVICE | ||
| + | SIZE=$(df /dev/$BLOCKDEVICE | awk '{print $3}' | grep -v 'Used') | ||
| + | time -p for ((x=1; x<=$BLOCKS; x++)) | ||
| + | do | ||
| + | POSITION=$(( RANDOM % $SIZE + 1)) | ||
| + | dd if=/dev/$BLOCKDEVICE of=/dev/null bs=1k count=1 seek=$POSITION | ||
| + | sync | ||
| + | echo 3 >/proc/sys/vm/drop_caches | ||
| + | done | ||
| + | echo " ^ time to process randomly $BLOCKS blocks of 1KB on /dev/$BLOCKDEVICE." | ||
= Gregory Masseau = | = Gregory Masseau = | ||
Revision as of 03:49, 2 February 2009
Please post your block device benchmark script here. I'm looking for a wide range of benchmark methodologies, so your script should test in a different way than the other scripts. I will collect these scripts on Monday, Jan 26 and create a master script which runs all of these tests and reports the overall results.
P. Constantino
#!/bin/bash
# This script generate random numbers and seeks to that POSITION on the block device given, reading 1 kb of data at the time.
# The purpose is test the speed of randomly reading 1024(default) blocks of 1KB from the disk.
# A valid input for BLOCK DEVICE could be: /dev/sdb (disk) - /dev/sda9 (partition) - /dev/md8 (RAID) - /dev/mapper/foo/bar (LV).
echo -n "Enter a number of block to read. Enter for default(1024): "
read BLOCKS
if [ "$BLOCKS" = "" ]
then
BLOCKS=1024
fi
echo -n "Enter a valid block device (dev/): "
read BLOCKDEVICE
SIZE=$(df /dev/$BLOCKDEVICE | awk '{print $3}' | grep -v 'Used')
time -p for ((x=1; x<=$BLOCKS; x++))
do
POSITION=$(( RANDOM % $SIZE + 1))
dd if=/dev/$BLOCKDEVICE of=/dev/null bs=1k count=1 seek=$POSITION
sync
echo 3 >/proc/sys/vm/drop_caches
done
echo " ^ time to process randomly $BLOCKS blocks of 1KB on /dev/$BLOCKDEVICE."
Gregory Masseau
Nestor CHAN
Mohak Vyas
Varinder Singh
Script in Python.Any suggestions would be welcome
