Results folders:
..//2010-08-20_1016/btrfs8-20-base/btrfs1.ffsb.random_reads__threads_0016.10-08-20_10.50.20
..//2010-08-20_1016/btrfs8-20-base-nocow/btrfs1.ffsb.random_reads__threads_0016.10-08-20_14.56.18
..//2010-08-21_1031/btrfs8-20-perfpatch/btrfs1.ffsb.random_reads__threads_0016.10-08-21_11.05.36
..//2010-08-21_1031/btrfs8-20-perfpatch-nocow/btrfs1.ffsb.random_reads__threads_0016.10-08-21_15.12.30