648db22b |
1 | # !/bin/sh |
2 | set -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 | # $HOME is on a ext4 filesystem |
26 | BENCHMARK_FILE="linux-4.11.6.tar" |
27 | BENCHMARK_DIR="$HOME/$BENCHMARK_FILE" |
28 | |
29 | # Normalize the environment |
30 | sudo umount /mnt/btrfs 2> /dev/null > /dev/null || true |
31 | sudo mount -t btrfs $@ /dev/sda3 /mnt/btrfs |
32 | sudo rm -rf /mnt/btrfs/* |
33 | sync |
34 | sudo umount /mnt/btrfs |
35 | sudo mount -t btrfs $@ /dev/sda3 /mnt/btrfs |
36 | |
37 | # Run the benchmark |
38 | echo "Copy" |
39 | time sh -c "sudo cp -r $BENCHMARK_DIR /mnt/btrfs/$BENCHMARK_FILE && sync" |
40 | |
41 | echo "Approximate tarred compression ratio" |
42 | printf "%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 |
47 | sudo umount /mnt/btrfs |
48 | sudo mount -t btrfs $@ /dev/sda3 /mnt/btrfs |
49 | |
50 | echo "Extract" |
51 | time sh -c "sudo tar -C /mnt/btrfs -xf /mnt/btrfs/$BENCHMARK_FILE && sync" |
52 | |
53 | # Remove the tarball, leaving only the extracted data |
54 | sudo rm /mnt/btrfs/$BENCHMARK_FILE |
55 | # Unmount and remount to avoid any caching |
56 | sudo umount /mnt/btrfs |
57 | sudo mount -t btrfs $@ /dev/sda3 /mnt/btrfs |
58 | |
59 | echo "Approximate extracted compression ratio" |
60 | printf "%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 | |
64 | echo "Read" |
65 | time sudo tar -c /mnt/btrfs 2> /dev/null | wc -c > /dev/null |
66 | |
67 | sudo rm -rf /mnt/btrfs/* |
68 | sudo 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 |