| cpufreq.4 (145287) | cpufreq.4 (147398) |
|---|---|
| 1.\" Copyright (c) 2005 Nate Lawson 2.\" All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. --- 8 unchanged lines hidden (view full) --- 17.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23.\" SUCH DAMAGE. 24.\" | 1.\" Copyright (c) 2005 Nate Lawson 2.\" All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. --- 8 unchanged lines hidden (view full) --- 17.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23.\" SUCH DAMAGE. 24.\" |
| 25.\" $FreeBSD: head/share/man/man4/cpufreq.4 145287 2005-04-19 16:38:24Z njl $ | 25.\" $FreeBSD: head/share/man/man4/cpufreq.4 147398 2005-06-15 13:31:23Z ru $ |
| 26.\" 27.Dd April 10, 2005 28.Dt CPUFREQ 4 29.Os 30.Sh NAME 31.Nm cpufreq 32.Nd CPU frequency control framework 33.Sh SYNOPSIS --- 23 unchanged lines hidden (view full) --- 57.Nm 58driver provides a unified kernel and user interface to CPU frequency 59control drivers. 60It combines multiple drivers offering different settings into a single 61interface of all possible levels. 62Users can access this interface directly via 63.Xr sysctl 8 64or by indicating to | 26.\" 27.Dd April 10, 2005 28.Dt CPUFREQ 4 29.Os 30.Sh NAME 31.Nm cpufreq 32.Nd CPU frequency control framework 33.Sh SYNOPSIS --- 23 unchanged lines hidden (view full) --- 57.Nm 58driver provides a unified kernel and user interface to CPU frequency 59control drivers. 60It combines multiple drivers offering different settings into a single 61interface of all possible levels. 62Users can access this interface directly via 63.Xr sysctl 8 64or by indicating to |
| 65.Pa power_profile | 65.Pa /etc/rc.d/power_profile |
| 66that it should switch settings when the AC line state changes via 67.Xr rc.conf 5 . 68.Sh SYSCTLS 69These settings may be overridden by kernel drivers requesting alternate 70settings. 71If this occurs, the original values will be restored once the condition 72has passed (e.g., the system has cooled sufficiently). 73If a sysctl cannot be set due to an override condition, it will return --- 27 unchanged lines hidden (view full) --- 101.Bl -tag -compact -width ".Pa acpi_perf" 102.It Pa acpi_perf 103ACPI CPU performance states 104.It Pa est 105Intel Enhanced SpeedStep 106.It Pa ichss 107Intel SpeedStep for ICH 108.It Pa powernow | 66that it should switch settings when the AC line state changes via 67.Xr rc.conf 5 . 68.Sh SYSCTLS 69These settings may be overridden by kernel drivers requesting alternate 70settings. 71If this occurs, the original values will be restored once the condition 72has passed (e.g., the system has cooled sufficiently). 73If a sysctl cannot be set due to an override condition, it will return --- 27 unchanged lines hidden (view full) --- 101.Bl -tag -compact -width ".Pa acpi_perf" 102.It Pa acpi_perf 103ACPI CPU performance states 104.It Pa est 105Intel Enhanced SpeedStep 106.It Pa ichss 107Intel SpeedStep for ICH 108.It Pa powernow |
| 109AMD PowerNow! for K7 and K8 | 109AMD PowerNow!\& for K7 and K8 |
| 110.It Pa smist 111Intel SMI-based SpeedStep for PIIX4 112.El 113.Pp 114The following device drivers offer relative frequency control and 115have an additive effect: 116.Pp 117.Bl -tag -compact -width ".Pa acpi_throttle" --- 178 unchanged lines hidden --- | 110.It Pa smist 111Intel SMI-based SpeedStep for PIIX4 112.El 113.Pp 114The following device drivers offer relative frequency control and 115have an additive effect: 116.Pp 117.Bl -tag -compact -width ".Pa acpi_throttle" --- 178 unchanged lines hidden --- |