While Btrfs came in third place for the sequential write performance in Threaded I/O Tester, with the random write performance it shot to first place. The Btrfs file-system was the fastest and nearly twice as fast as the second place competitor was here (EXT3). Btrfs was more than five times faster than EXT4 with its random writes. ReiserFS continued to be the slowest file-system overall.
With the read performance in Threaded I/O Tester, Btrfs came out ahead of EXT4 but was behind EXT3, which finished with the highest read speed. EXT3 averaged out to have a read speed of 209MB/s while Btrfs was at 174MB/s and then came XFS at 152MB/s. The EXT4 file-system clocked in at just 135MB/s. However, the EXT4 file-system was not the slowest as ReiserFS came in at just 114MB/s.
With the random read performance in our final Threaded I/O Tester run, the fastest was not Btrfs but it was not EXT3 or EXT4 either. XFS ended up earning the title of the best random read performance at 37MB/s while EXT4 and EXT3 came in at 36MB/s and 35MB/s, respectively. Btrfs had fallen behind -- it was even slower than ReiserFS -- with a speed of 28MB/s.