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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: 0s | 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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pbhjpbhj ◴[17 Nov 24 14:54 UTC] No.42164481[source]▶
>"bpftune logs to syslog so /var/log/messages will contain details of any tuning carried out." (from OP GitHub readme)

The rmem example seems to allay fears that it will make changes one can't reverse.

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admax88qqq ◴[17 Nov 24 14:57 UTC] No.42164502[source]▶
It’s not a questions of being able to reverse. It’s a question of being able to diagnose that one of these changes even was the problem and if so which one.
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1. yourapostasy ◴[18 Nov 24 00:51 UTC] No.42168709{3}[source]▶
Record changes in git and then git bisect issues, maybe?

Without change capture, solid regression testing, or observability, it seems difficult to manage these changes. I’d like to how others are managing these kinds of changes to readily troubleshoot them, without lots of regression testing or observability, if anyone has successes to share.