Results folders:
..//2010-08-20_1016/btrfs8-20-base/btrfs1.ffsb.random_writes__threads_0016.10-08-20_11.18.04
..//2010-08-20_1016/btrfs8-20-base-nocow/btrfs1.ffsb.random_writes__threads_0016.10-08-20_15.22.11
..//2010-08-21_1031/btrfs8-20-perfpatch/btrfs1.ffsb.random_writes__threads_0016.10-08-21_11.33.23
..//2010-08-21_1031/btrfs8-20-perfpatch-nocow/btrfs1.ffsb.random_writes__threads_0016.10-08-21_15.39.33