cpufreq.4 (23090366f729c56cab62de74c7a51792357e98a9) cpufreq.4 (4577cf3744b98d0fa7cea80c75079c3cf5155471)
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.

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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.\" $FreeBSD$
26.\"
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.

--- 10 unchanged lines hidden (view full) ---

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.\" $FreeBSD$
26.\"
27.Dd March 3, 2006
27.Dd January 22, 2020
28.Dt CPUFREQ 4
29.Os
30.Sh NAME
31.Nm cpufreq
32.Nd CPU frequency control framework
33.Sh SYNOPSIS
34.Cd "device cpufreq"
35.Pp

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80.Pa kern.timecounter.hardware
81sysctl.
82Available modes are in
83.Pa kern.timecounter.choice
84sysctl entry.
85.Bl -tag -width indent
86.It Va dev.cpu.%d.freq
87Current active CPU frequency in MHz.
28.Dt CPUFREQ 4
29.Os
30.Sh NAME
31.Nm cpufreq
32.Nd CPU frequency control framework
33.Sh SYNOPSIS
34.Cd "device cpufreq"
35.Pp

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80.Pa kern.timecounter.hardware
81sysctl.
82Available modes are in
83.Pa kern.timecounter.choice
84sysctl entry.
85.Bl -tag -width indent
86.It Va dev.cpu.%d.freq
87Current active CPU frequency in MHz.
88.It Va dev.cpu.%d.freq_driver
89The specific
90.Nm
91driver used by this cpu.
88.It Va dev.cpu.%d.freq_levels
89Currently available levels for the CPU (frequency/power usage).
90Values are in units of MHz and milliwatts.
91.It Va dev.DEVICE.%d.freq_settings
92Currently available settings for the driver (frequency/power usage).
93Values are in units of MHz and milliwatts.
94This is helpful for understanding which settings are offered by which
95driver for debugging purposes.

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92.It Va dev.cpu.%d.freq_levels
93Currently available levels for the CPU (frequency/power usage).
94Values are in units of MHz and milliwatts.
95.It Va dev.DEVICE.%d.freq_settings
96Currently available settings for the driver (frequency/power usage).
97Values are in units of MHz and milliwatts.
98This is helpful for understanding which settings are offered by which
99driver for debugging purposes.

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