Linux 3.5 Through Linux 4.4 Kernel Benchmarks: A 19-Way Kernel Showdown Shows Some Regressions

The TTSIOD performance on recent kernels shows rather odd behavior for this CPU-based tests. Unfortunately I don't have much more information about this situation.

With the x264 benchmark, the performance improved after the Linux 3.11 kernel with the exception of a regression in Linux 3.14. The early performance changes past Linux 3.11 may be due to tuning still going on that point for the P-State scaling driver.

In benchmarks like Himeno and FLAC, the performance has been virtually the same and unaffected by the Linux kernel releases of the past few years.

From Linux 3.14 through Linux 4.2, the timed kernel compilation performance was fluctuating greatly but since Linux 4.3 on this system the performance has been stable and similar to that of Linux 3.13 and older.