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 | # $BENCHMARK_DIR is generated with the following commands, from the Ubuntu image |
9 | # ubuntu-16.10-desktop-amd64.iso. |
10 | # > mkdir mnt |
11 | # > sudo mount -o loop ubuntu-16.10-desktop-amd64.iso mnt |
12 | # > cp mnt/casper/filesystem.squashfs . |
13 | # > sudo unsquashfs filesystem.squashfs |
14 | |
15 | # $HOME is on a ext4 filesystem |
16 | BENCHMARK_DIR="$HOME/squashfs-root/" |
17 | BENCHMARK_FS="$HOME/filesystem.squashfs" |
18 | |
19 | # Normalize the environment |
20 | sudo rm -f $BENCHMARK_FS 2> /dev/null > /dev/null || true |
21 | sudo umount /mnt/squashfs 2> /dev/null > /dev/null || true |
22 | |
23 | # Run the benchmark |
24 | echo "Compression" |
25 | echo "sudo mksquashfs $BENCHMARK_DIR $BENCHMARK_FS $@" |
26 | time sudo mksquashfs $BENCHMARK_DIR $BENCHMARK_FS $@ 2> /dev/null > /dev/null |
27 | |
28 | echo "Approximate compression ratio" |
29 | printf "%d / %d\n" \ |
30 | $(sudo du -sx --block-size=1 $BENCHMARK_DIR | cut -f1) \ |
31 | $(sudo du -sx --block-size=1 $BENCHMARK_FS | cut -f1); |
32 | |
33 | # Mount the filesystem |
34 | sudo mount -t squashfs $BENCHMARK_FS /mnt/squashfs |
35 | |
36 | echo "Decompression" |
37 | time sudo tar -c /mnt/squashfs 2> /dev/null | wc -c > /dev/null |
38 | |
39 | sudo umount /mnt/squashfs |