Reiser4 File-System Benchmarks With Linux 4.17

In the case of Dbench with six threads, Reiser4 was the slowest although F2FS in this workload wasn't much faster.

With CompileBench, Reiser4 was in the middle of the file-system performance ranking while ReiserFS was showing its age.

In the fsync-heavy PostMark test profile, ReiserFS and Reiser4 were the slowest of the bunch.

Reiser4 was also the slowest with the PostgreSQL database benchmark.

To little surprise given that Reiser4 doesn't see too much optimization/feature work these days, Reiser4 tended to struggle compared to today's EXT4, F2FS, Btrfs, and XFS competition that are within the mainline Linux kernel. In fact, it's already been a decade since Hans Reiser was last able to contribute to the file-system's development and since then there has just been Edward Shishkin and few other contributors. Given the small bus count for maintaining Reiser4 and the lack of any corporate sponsor, besides the lackluster performance, it makes the likelihood of using Reiser4 in production a risky bet given the uncertain future. Back when Reiser4 was in early stages of development by Hans Reiser, it was designed for running up against its primary competition at the time, EXT3, and with rotational storage devices. But anyhow, it's been fun seeing how Reiser4 is running in 2018.