1*01826a49SYabin Cui# !/bin/sh 2*01826a49SYabin Cuiset -e 3*01826a49SYabin Cui 4*01826a49SYabin Cui# Benchmarks run on a Ubuntu 14.04 VM with 2 cores and 4 GiB of RAM. 5*01826a49SYabin Cui# The VM is running on a Macbook Pro with a 3.1 GHz Intel Core i7 processor and 6*01826a49SYabin Cui# 16 GB of RAM and an SSD. 7*01826a49SYabin Cui 8*01826a49SYabin Cui# silesia is a directory that can be downloaded from 9*01826a49SYabin Cui# http://mattmahoney.net/dc/silesia.html 10*01826a49SYabin Cui# ls -l silesia/ 11*01826a49SYabin Cui# total 203M 12*01826a49SYabin Cui# -rwxr-xr-x 1 terrelln 9.8M Apr 12 2002 dickens 13*01826a49SYabin Cui# -rwxr-xr-x 1 terrelln 49M May 31 2002 mozilla 14*01826a49SYabin Cui# -rwxr-xr-x 1 terrelln 9.6M Mar 20 2003 mr 15*01826a49SYabin Cui# -rwxr-xr-x 1 terrelln 32M Apr 2 2002 nci 16*01826a49SYabin Cui# -rwxr-xr-x 1 terrelln 5.9M Jul 4 2002 ooffice 17*01826a49SYabin Cui# -rwxr-xr-x 1 terrelln 9.7M Apr 11 2002 osdb 18*01826a49SYabin Cui# -rwxr-xr-x 1 terrelln 6.4M Apr 2 2002 reymont 19*01826a49SYabin Cui# -rwxr-xr-x 1 terrelln 21M Mar 25 2002 samba 20*01826a49SYabin Cui# -rwxr-xr-x 1 terrelln 7.0M Mar 24 2002 sao 21*01826a49SYabin Cui# -rwxr-xr-x 1 terrelln 40M Mar 25 2002 webster 22*01826a49SYabin Cui# -rwxr-xr-x 1 terrelln 8.1M Apr 4 2002 x-ray 23*01826a49SYabin Cui# -rwxr-xr-x 1 terrelln 5.1M Nov 30 2000 xml 24*01826a49SYabin Cui 25*01826a49SYabin Cui# $HOME is on a ext4 filesystem 26*01826a49SYabin CuiBENCHMARK_DIR="$HOME/silesia/" 27*01826a49SYabin CuiN=10 28*01826a49SYabin Cui 29*01826a49SYabin Cui# Normalize the environment 30*01826a49SYabin Cuisudo umount /mnt/btrfs 2> /dev/null > /dev/null || true 31*01826a49SYabin Cuisudo mount -t btrfs $@ /dev/sda3 /mnt/btrfs 32*01826a49SYabin Cuisudo rm -rf /mnt/btrfs/* 33*01826a49SYabin Cuisync 34*01826a49SYabin Cuisudo umount /mnt/btrfs 35*01826a49SYabin Cuisudo mount -t btrfs $@ /dev/sda3 /mnt/btrfs 36*01826a49SYabin Cui 37*01826a49SYabin Cui# Run the benchmark 38*01826a49SYabin Cuiecho "Compression" 39*01826a49SYabin Cuitime sh -c "for i in \$(seq $N); do sudo cp -r $BENCHMARK_DIR /mnt/btrfs/\$i; done; sync" 40*01826a49SYabin Cui 41*01826a49SYabin Cuiecho "Approximate compression ratio" 42*01826a49SYabin Cuiprintf "%d / %d\n" \ 43*01826a49SYabin Cui $(df /mnt/btrfs --output=used -B 1 | tail -n 1) \ 44*01826a49SYabin Cui $(sudo du /mnt/btrfs -b -d 0 | tr '\t' '\n' | head -n 1); 45*01826a49SYabin Cui 46*01826a49SYabin Cui# Unmount and remount to avoid any caching 47*01826a49SYabin Cuisudo umount /mnt/btrfs 48*01826a49SYabin Cuisudo mount -t btrfs $@ /dev/sda3 /mnt/btrfs 49*01826a49SYabin Cui 50*01826a49SYabin Cuiecho "Decompression" 51*01826a49SYabin Cuitime sudo tar -c /mnt/btrfs 2> /dev/null | wc -c > /dev/null 52*01826a49SYabin Cui 53*01826a49SYabin Cuisudo rm -rf /mnt/btrfs/* 54*01826a49SYabin Cuisudo umount /mnt/btrfs 55*01826a49SYabin Cui 56*01826a49SYabin Cui# Run for each of -o compress-force={none, lzo, zlib, zstd} 5 times and take the 57*01826a49SYabin Cui# min time and ratio. 58*01826a49SYabin Cui# Ran zstd with compression levels {1, 3, 6, 9, 12, 15}. 59*01826a49SYabin Cui# Original size: 2119415342 B (using du /mnt/btrfs) 60*01826a49SYabin Cui 61*01826a49SYabin Cui# none 62*01826a49SYabin Cui# compress: 4.205 s 63*01826a49SYabin Cui# decompress: 3.090 s 64*01826a49SYabin Cui# ratio: 0.99 65*01826a49SYabin Cui 66*01826a49SYabin Cui# lzo 67*01826a49SYabin Cui# compress: 5.328 s 68*01826a49SYabin Cui# decompress: 4.793 s 69*01826a49SYabin Cui# ratio: 1.66 70*01826a49SYabin Cui 71*01826a49SYabin Cui# zlib 72*01826a49SYabin Cui# compress: 32.588 s 73*01826a49SYabin Cui# decompress: 8.791 s 74*01826a49SYabin Cui# ratio : 2.58 75*01826a49SYabin Cui 76*01826a49SYabin Cui# zstd 1 77*01826a49SYabin Cui# compress: 8.147 s 78*01826a49SYabin Cui# decompress: 5.527 s 79*01826a49SYabin Cui# ratio : 2.57 80*01826a49SYabin Cui 81*01826a49SYabin Cui# zstd 3 82*01826a49SYabin Cui# compress: 12.207 s 83*01826a49SYabin Cui# decompress: 5.195 s 84*01826a49SYabin Cui# ratio : 2.71 85*01826a49SYabin Cui 86*01826a49SYabin Cui# zstd 6 87*01826a49SYabin Cui# compress: 30.253 s 88*01826a49SYabin Cui# decompress: 5.324 s 89*01826a49SYabin Cui# ratio : 2.87 90*01826a49SYabin Cui 91*01826a49SYabin Cui# zstd 9 92*01826a49SYabin Cui# compress: 49.659 s 93*01826a49SYabin Cui# decompress: 5.220 s 94*01826a49SYabin Cui# ratio : 2.92 95*01826a49SYabin Cui 96*01826a49SYabin Cui# zstd 12 97*01826a49SYabin Cui# compress: 99.245 s 98*01826a49SYabin Cui# decompress: 5.193 s 99*01826a49SYabin Cui# ratio : 2.93 100*01826a49SYabin Cui 101*01826a49SYabin Cui# zstd 15 102*01826a49SYabin Cui# compress: 196.997 s 103*01826a49SYabin Cui# decompress: 5.992 s 104*01826a49SYabin Cui# ratio : 3.01 105