Be horrified, then. https://redislabs.com/blog/testing-fork-time-on-awsxen-infra... https://www.cs.indiana.edu/~adkulkar/papers/pspawn.pdf

Both of those appear to indicate that forking is expensive when you need to copy unusually large amounts of memory (which makes sense). In this context, I would expect reasonable/small memory use and so fast forking.

From lmbench, http://www.bitmover.com/lmbench/lat_proc.8.html

Try it out.