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the rust example is so far off being useful and file io seems completly dumb in this context

Real programs have to do IO and the C and C++ code runs faster while also doing IO.

What do you think they could have done better assuming that the IO is a necessary part of the benchmark?

Also good job to the Rust devs for making the benchmark so much faster in nightly. I wonder what they did.

The file I/O is probably irrelevant, but the startup time is not.

The differences among the really fast languages are probably in different startup times if I had to guess.

> differences among the really fast languages are probably in different startup times

Startup times matter a great deal.

What if we try to measure rather than guess :-)

> Assuming that the IO is a necessary part of the benchmark …

So make it significant, move giga like benchmarks game reverse-complement & fasta & …