nvm_tools/percore.sh at master · Light-Dedup/nvm_tools · GitHub

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set -e

if [ ! $4 ]; then
	echo Usage: $0 dir thread size_per_thread\(GiB\) dup
	exit
fi

# To prevent password
sudo echo
start_time=$(date +%s%N)
for i in $(seq 0 $(($3-1))); do
	for j in $(seq 0 $(($2-1))); do
		id=$(($i*$2+$j))
		sudo fio -filename=$1/test_$id -fallocate=none -direct=1 -iodepth 1 -rw=write -ioengine=sync -bs=4K -thread -numjobs=1 -size=1G -name=test --dedupe_percentage=$4 -group_reporting -randseed=$id &
	done
	wait
done
end_time=$(date +%s%N)
first=$(($end_time - $start_time))

sudo mkdir $1/0
sudo mv $1/test* $1/0/
start_time=$(date +%s%N)
for i in $(seq 0 $(($3-1))); do
	for j in $(seq 0 $(($2-1))); do
		id=$(($j*$3+$i))
		sudo fio -filename=$1/test_$id -fallocate=none -direct=1 -iodepth 1 -rw=write -ioengine=sync -bs=4K -thread -numjobs=1 -size=1G -name=test --dedupe_percentage=$4 -group_reporting -randseed=$id &
	done
	wait
done
end_time=$(date +%s%N)
second=$(($end_time - $start_time))

echo First: $first ns
echo Second: $second ns