Came across this comparison of Linux kernels (2.6.24) and prachi (7.1 )www.cs.virginia.edu/
We determine that FreeBSD performs equally or
better than Linux on file read operation, page allocation latency and page touch latency measurements. We
also find out that the kernel call overhead is more in
FreeBSD than in Linux. Also, context switch delay is
more uniform in FreeBSD than in Linux, while signals
perform faster on Linux than on FreeBSD.
Actually the question, what has changed in this respect since that time, and how relevant this information is for current astramovich cores?