| # !/bin/sh |
| set -e |
| |
| # Benchmarks run on a Ubuntu 14.04 VM with 2 cores and 4 GiB of RAM. |
| # The VM is running on a Macbook Pro with a 3.1 GHz Intel Core i7 processor and |
| # 16 GB of RAM and an SSD. |
| |
| # $BENCHMARK_DIR is generated with the following commands, from the Ubuntu image |
| # ubuntu-16.10-desktop-amd64.iso. |
| # > mkdir mnt |
| # > sudo mount -o loop ubuntu-16.10-desktop-amd64.iso mnt |
| # > cp mnt/casper/filesystem.squashfs . |
| # > sudo unsquashfs filesystem.squashfs |
| |
| # $HOME is on a ext4 filesystem |
| BENCHMARK_DIR="$HOME/squashfs-root/" |
| BENCHMARK_FS="$HOME/filesystem.squashfs" |
| |
| # Normalize the environment |
| sudo rm -f $BENCHMARK_FS 2> /dev/null > /dev/null || true |
| sudo umount /mnt/squashfs 2> /dev/null > /dev/null || true |
| |
| # Run the benchmark |
| echo "Compression" |
| echo "sudo mksquashfs $BENCHMARK_DIR $BENCHMARK_FS $@" |
| time sudo mksquashfs $BENCHMARK_DIR $BENCHMARK_FS $@ 2> /dev/null > /dev/null |
| |
| echo "Approximate compression ratio" |
| printf "%d / %d\n" \ |
| $(sudo du -sx --block-size=1 $BENCHMARK_DIR | cut -f1) \ |
| $(sudo du -sx --block-size=1 $BENCHMARK_FS | cut -f1); |
| |
| # Mount the filesystem |
| sudo mount -t squashfs $BENCHMARK_FS /mnt/squashfs |
| |
| echo "Decompression" |
| time sudo tar -c /mnt/squashfs 2> /dev/null | wc -c > /dev/null |
| |
| sudo umount /mnt/squashfs |