LONGRUN(4)

📦 version 15.1, in freebsd 14.5, freebsd 15.1

💖 NAME 💖

okay so bestie, welcome to longrun(4) — this is the page from the i386 Kernel Interfaces Manual and it's literally all about longrun — Transmeta(TM) Crusoe(TM) LongRun(TM) support. that's it, that's the whole name, slay ✨

🌸 SYNOPSIS 🌸

so LongRun support is a whole collection of power saving modes for the Transmeta Crusoe chips — think of it as Intel's SpeedStep's cooler cousin, similar in scope but with its own vibe 💅

the following sysctl(8) MIBs control the different CPU modes, and ngl this is the part you're gonna screenshot:

  • hw.crusoe.longrun — type: integer, changeable: yes 🌈 — this is the LongRun mode itself, and it's giving main character because you can actually change it:
    • 0: minimum frequency mode 🐌
    • 1: power-saving mode 🔋
    • 2: performance mode 🔥
    • 3: maximum frequency mode 👑
  • hw.crusoe.frequency — type: integer, changeable: no 🙈 — the current frequency, in MHz.
  • hw.crusoe.voltage — type: integer, changeable: no 🙈 — the current voltage, in mV.
  • hw.crusoe.percentage — type: integer, changeable: no 🙈 — the processing performance, in %.
lowkey the vibe check here: hw.crusoe.longrun is the only one you can touch. the other three are read-only icons — look, don't touch, periodt 💀

⭐ EXAMPLES ⭐

want to print the current status? bestie just say less:

% sysctl hw.crusoe

and to set LongRun mode to that performance oriented variable frequency mode (which, heads up, means less power savings 🫶):

# sysctl hw.crusoe.longrun=2

🦋 HISTORY 🦋

the Transmeta(TM) Crusoe(TM) LongRun(TM) support first appeared in FreeBSD 4.4 — an icon, a legend, and it was there ✨

🎀 AUTHORS 🎀

LongRun support and this manual page were written by two absolute legends:

  • Tamotsu HATTORI <athlete@kta.att.ne.jp>
  • Mitsuru IWASAKI <iwasaki@FreeBSD.org>

no cap, they built the whole thing and then wrote the docs too — that's main character energy fr fr 👑

and that's the whole page, bestie!! 💖 this one came from the Debian crew, dated June 30, 2001 — an actual artifact, we stan 🎀✨

📦 where this page comes from