1# !/bin/sh 2set -e 3 4# Benchmarks run on a Ubuntu 14.04 VM with 2 cores and 4 GiB of RAM. 5# The VM is running on a Macbook Pro with a 3.1 GHz Intel Core i7 processor and 6# 16 GB of RAM and an SSD. 7 8# silesia is a directory that can be downloaded from 9# http://mattmahoney.net/dc/silesia.html 10# ls -l silesia/ 11# total 203M 12# -rwxr-xr-x 1 terrelln 9.8M Apr 12 2002 dickens 13# -rwxr-xr-x 1 terrelln 49M May 31 2002 mozilla 14# -rwxr-xr-x 1 terrelln 9.6M Mar 20 2003 mr 15# -rwxr-xr-x 1 terrelln 32M Apr 2 2002 nci 16# -rwxr-xr-x 1 terrelln 5.9M Jul 4 2002 ooffice 17# -rwxr-xr-x 1 terrelln 9.7M Apr 11 2002 osdb 18# -rwxr-xr-x 1 terrelln 6.4M Apr 2 2002 reymont 19# -rwxr-xr-x 1 terrelln 21M Mar 25 2002 samba 20# -rwxr-xr-x 1 terrelln 7.0M Mar 24 2002 sao 21# -rwxr-xr-x 1 terrelln 40M Mar 25 2002 webster 22# -rwxr-xr-x 1 terrelln 8.1M Apr 4 2002 x-ray 23# -rwxr-xr-x 1 terrelln 5.1M Nov 30 2000 xml 24 25# $HOME is on a ext4 filesystem 26BENCHMARK_FILE="linux-4.11.6.tar" 27BENCHMARK_DIR="$HOME/$BENCHMARK_FILE" 28 29# Normalize the environment 30sudo umount /mnt/btrfs 2> /dev/null > /dev/null || true 31sudo mount -t btrfs $@ /dev/sda3 /mnt/btrfs 32sudo rm -rf /mnt/btrfs/* 33sync 34sudo umount /mnt/btrfs 35sudo mount -t btrfs $@ /dev/sda3 /mnt/btrfs 36 37# Run the benchmark 38echo "Copy" 39time sh -c "sudo cp -r $BENCHMARK_DIR /mnt/btrfs/$BENCHMARK_FILE && sync" 40 41echo "Approximate tarred compression ratio" 42printf "%d / %d\n" \ 43 $(df /mnt/btrfs --output=used -B 1 | tail -n 1) \ 44 $(sudo du /mnt/btrfs -b -d 0 | tr '\t' '\n' | head -n 1); 45 46# Unmount and remount to avoid any caching 47sudo umount /mnt/btrfs 48sudo mount -t btrfs $@ /dev/sda3 /mnt/btrfs 49 50echo "Extract" 51time sh -c "sudo tar -C /mnt/btrfs -xf /mnt/btrfs/$BENCHMARK_FILE && sync" 52 53# Remove the tarball, leaving only the extracted data 54sudo rm /mnt/btrfs/$BENCHMARK_FILE 55# Unmount and remount to avoid any caching 56sudo umount /mnt/btrfs 57sudo mount -t btrfs $@ /dev/sda3 /mnt/btrfs 58 59echo "Approximate extracted compression ratio" 60printf "%d / %d\n" \ 61 $(df /mnt/btrfs --output=used -B 1 | tail -n 1) \ 62 $(sudo du /mnt/btrfs -b -d 0 | tr '\t' '\n' | head -n 1); 63 64echo "Read" 65time sudo tar -c /mnt/btrfs 2> /dev/null | wc -c > /dev/null 66 67sudo rm -rf /mnt/btrfs/* 68sudo umount /mnt/btrfs 69 70# Run for each of -o compress-force={none, lzo, zlib, zstd} 5 times and take the 71# min time and ratio. 72 73# none 74# copy: 0.981 s 75# extract: 5.501 s 76# read: 8.807 s 77# tarball ratio: 0.97 78# extracted ratio: 0.78 79 80# lzo 81# copy: 1.631 s 82# extract: 8.458 s 83# read: 8.585 s 84# tarball ratio: 2.06 85# extracted ratio: 1.38 86 87# zlib 88# copy: 7.750 s 89# extract: 21.544 s 90# read: 11.744 s 91# tarball ratio : 3.40 92# extracted ratio: 1.86 93 94# zstd 1 95# copy: 2.579 s 96# extract: 11.479 s 97# read: 9.389 s 98# tarball ratio : 3.57 99# extracted ratio: 1.85 100