4 x SSD Btrfs/EXT4 RAID Tests On Linux 4.15

EXT4 RAID0 configurations were running the fastest with Dbench.

Four disk RAID0 on EXT4 was very fast in IOzone.

EXT4 RAID1 across four disks exhibited incredibly poor performance while the other numbers were in line with expectations. EXT4 had a slight advantage over Btrfs in PostgreSQL due to Btrfs' default CoW behavior, but both file-systems performed well in four disk RAID0 for this database benchmark.

Those wanting to compare their own Linux system(s) I/O performance to the results in this article can simply install the Phoronix Test Suite and run phoronix-test-suite benchmark 1712183-AL-4ADATASSD03.