Linux 3.14 Kernel File-System SSD Benchmarks
Using AIO-Stress to generate a random write workload didn't show much of a performance change between the 3.12 and 3.14 kernels for the three tested file-systems. The fastest file-system overall was Samsung's Flash-Friendly File-System (F2FS) that is finely tuned for flash-based storage mediums.
Dbench saw little change between the kernel releases with EXT4, Btrfs, and F2FS. The fastest file-system from the SanDisk SSD in the Intel ultrabook was still F2FS and followed by EXT4 and then Btrfs.
Dbench with six clients showed the F2FS performance did regress hard in the Linux 3.13 kernel and didn't yet recover. In some of the other tests it looked like the F2FS performance pulled back a bit in Linux 3.13 and this large drop seems to confirm a regression did take place and is still outstanding. With the F2FS drop in performance, EXT4 is now the fastest file-system when running multiple Dbench clients on the Linux 3.14 kernel.
The IOzone read performance wasn't hugely interesting and the results were rather close between the three tested file-systems on Linux 3.14.