Results folders:
..//2010-08-20_1016/btrfs8-20-base/btrfs1.ffsb.large_file_creates__threads_0128.10-08-20_13.14.48
..//2010-08-20_1016/btrfs8-20-base-nocow/btrfs1.ffsb.large_file_creates__threads_0128.10-08-20_16.42.17
..//2010-08-21_1031/btrfs8-20-perfpatch/btrfs1.ffsb.large_file_creates__threads_0128.10-08-21_13.29.36
..//2010-08-21_1031/btrfs8-20-perfpatch-nocow/btrfs1.ffsb.large_file_creates__threads_0128.10-08-21_16.59.35