| 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 |