EXT4 is supposed to be faster than its predecessor at removing files, but this wasn't the case with the Bonnie++ 4GB random delete test. Here the number of sustained operations per second had dropped about 15% when changing from EXT3 to EXT4. The fastest file-system was XFS followed by the ReiserFS with a slight lead over EXT3.
The benefits of EXT4 were shown in a 4GB sequential create. EXT4 managed to push a 34% lead over EXT3 and sizable leads over XFS and ReiserFS.
EXT4 had continued to shine through with the 4GB sequential read. XFS managed to outperform EXT4 at reading, but it was by a very slim margin. EXT3 and ReiserFS were nearly 40% slower.
Editor's Note: Red Hat's Eric Sandeen has stated that with the current Bonnie++ tests in this article, the labels are open to misinterpretation. We will be re-conducting the Bonnie++ tests as well as making the result labels more clear within the Phoronix Test Suite.