Bpftune uses BPF to auto-tune Linux systems

The kernel might already be too monolithic.

This kernel parameters optimisation reminds me of PGO compilation in programs.

Yet, perhaps the kernel could come with multiple defaults config files, each being a good base for different workloads: server, embedded, laptop, mobile, database, router, etc.

That was the first idea that jumped in when thinking in what could go wrong, not because the Linux kernel, or BPF or this program, just for how it is intended to work. There might be no risk of that happening, there may be controls around that, or if they happen they might only converge to an estable state, but still it is something to have in the map.

That one will always be dependent on the usage patterns. So the auto-tuner can't guarantee it.

Also, I imagine the risk of the feedback turning positive is related to the system load (not CPU, but the usage of the resources you are optimizing). If so, it will make your computer less able to manage load. But this can still be useful for optimizing for latency.

On behalf of every junior administrator, overworked IT admin, and security-concerned "cattle" wrangler, thank you.

Having to learn a thousand+ knobs & dials means most will never be touched. I for one welcome automated assistance in this area, even if the results are imperfect.