---
name: "longrun"
section: "4freebsd"
platform: "linux"
package: "freebsd-manpages"
version: "12.2-2"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/longrun/4freebsd"
---

# longrun(4freebsd)

Transmeta(TM) Crusoe(TM) LongRun(TM) support

## NAME

**longrun** – Transmeta(TM) Crusoe(TM) LongRun(TM) support

## SYNOPSIS

LongRun support is a collection of power saving modes for the Transmeta Crusoe chips, similar in scope to Intel's SpeedStep. The following [sysctl(8)](/sysctl/8.md) MIBs control the different CPU modes:

| | | | |
| --- | --- | --- | --- |
| **Name** | Type | Changeable | Description |
| *hw.crusoe.longrun* | *integer* | yes | LongRun mode: |
|  |  |  | 0: minimum frequency mode |
|  |  |  | 1: power-saving mode |
|  |  |  | 2: performance mode |
|  |  |  | 3: maximum frequency mode |
| *hw.crusoe.frequency* | *integer* | no | Current frequency (MHz). |
| *hw.crusoe.voltage* | *integer* | no | Current voltage (mV). |
| *hw.crusoe.percentage* | *integer* | no | Processing performance (%). |

## EXAMPLES

Print the current status:

```
% sysctl hw.crusoe
```

To set LongRun mode to performance oriented variable frequency mode (less power savings):

```
# sysctl hw.crusoe.longrun=2
```

## HISTORY

The Transmeta(TM) Crusoe(TM) LongRun(TM) support first appeared in FreeBSD 4.4.

## AUTHORS

LongRun support and this manual page were written by Tamotsu HATTORI ⟨*athlete@kta.att.ne.jp*⟩ and Mitsuru IWASAKI ⟨*iwasaki@FreeBSD.org*⟩.