With the Linux 3.0 kernel carrying CleanCache support along
with various improvements to the EXT4 and Btrfs file-system modules, it
is time for another Phoronix file-system comparison. This time around
the EXT4 vs. Btrfs performance is particularly important with Fedora 16
possibly switching to Btrfs by default. Due to this level of interest,
for our Linux 3.0 kernel benchmarks of the EXT4 and Btrfs file-systems,
an Intel SSD was tested as well as an old 5400RPM IDE notebook hard
drive to represent two ends of the spectrum.