Comment ext3 (Score 1) 3
ext4 may show better performance, obviously depending on the many factors listed above, but an ill-timed crash in extreme cases can cause massive data loss due to data not hitting the disk until long after metadata has been written to the journal in ext4. You can use the nodelalloc mount option for ext4 to get around the data loss problem, but then you lose some of the potential performance gain by using ext4. I am not as familiar with ufs or zfs, so I can't help you there. If it were me, i'd go ext3.