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Bpftune uses BPF to auto-tune Linux systems

(github.com)
256 points BSDobelix | 1 comments | 17 Nov 24 11:38 UTC | HN request time: 0.212s | source
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gausswho ◴[17 Nov 24 14:33 UTC] No.42164371[source]▶
With this tool I am wary that I'll encounter system issues that are dramatically more difficult to diagnose and troubleshoot because I'll have drifted from a standard distro configuration. And in ways I'm unaware of. Is this a reasonable hesitation?
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sgarland ◴[17 Nov 24 15:05 UTC] No.42164533[source]▶
Yes, it is. IMO, except for learning (which should not be done in prod), you shouldn’t make changes that you don’t understand.

The tools seems to mostly tweak various networking settings. You could set up a test instance with monitoring, throw load at it, and change the parameters the tool modifies (one at a time!) to see how it reacts.

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1. zorked ◴[18 Nov 24 08:09 UTC] No.42170649[source]▶
Learning and self-tuning happens everywhere. Cache sizes that adjust to load, pools that grow and shrink, etc. This is just adding autotuning to something that doesn't have it. With presumably better algorithms than the rules-of-thumb approach that is more common.

It's a great idea.