RCTL(4)

💅 RCTL(4) — the resource limits manual, but make it make sense

okay bestie, so this is rctl(4) — the resource limits page, section 4, kernel interfaces. yes it's a whole manual page about limits and yes i'm gonna make it iconic. let's go ✨

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🌸 NAME 🌸

rctl — resource limits. literally that's it, that's the whole vibe: resource limits. 🎀

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🦋 SYNOPSIS 🦋

so to compile this driver into the kernel, you gotta place the following line in the kernel configuration file:

options RACCT
options RCTL

two lines, both required, no cap. put them in your kernel config and you're slaying. 💅

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✨ DESCRIPTION ✨

okay so the rctl subsystem is this super flexible resource limits mechanism, right? it's controlled by a set of rules, and those rules can be added or removed at runtime using the rctl(8) management utility. runtime changes, bestie — no reboots, no drama, we love a live-edit moment. 🫶

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⭐ LOADER TUNABLES ⭐

these tunables can be set at the loader(8) prompt, or in loader.conf(5). pick your fighter. 🔥

• kern.racct.enable: 1 — enables rctl. this defaults to 1, unless options RACCT_DEFAULT_TO_DISABLED is set in the kernel configuration file. so it's on by default… until you tell it not to be. main character behaviour honestly. 👑

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🌈 SEE ALSO 🌈

• rctl.conf(5)
• rctl(8)

go read those too, i'm not doing all the work for you 💖

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🌸 HISTORY 🌸

the rctl subsystem first appeared in FreeBSD 9.0. a legend was born, periodt. 🎀

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💜 AUTHORS 💜

the rctl subsystem was developed by Edward Tomasz Napierala <trasz@FreeBSD.org> under sponsorship from the FreeBSD Foundation. king behaviour, fr fr — sponsorship and everything. 👑✨

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and that's the page, bestie! 🦋 this one's from Debian, dated May 28, 2017, filed under RCTL(4) — go forth and limit your resources responsibly 💅🎀