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| -rw-r--r-- | share/man/man4/acpicpu.4 | 50 |
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diff --git a/share/man/man4/acpicpu.4 b/share/man/man4/acpicpu.4 new file mode 100644 index 00000000000..688f2033960 --- /dev/null +++ b/share/man/man4/acpicpu.4 @@ -0,0 +1,50 @@ +.\" $OpenBSD: acpicpu.4,v 1.1 2007/01/11 23:21:11 mk Exp $ +.\" +.\" Copyright (c) 2006 Michael Knudsen <mk@openbsd.org> +.\" +.\" Permission to use, copy, modify, and distribute this software for any +.\" purpose with or without fee is hereby granted, provided that the above +.\" copyright notice and this permission notice appear in all copies. +.\" +.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES +.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF +.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR +.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES +.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN +.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF +.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. +.\" +.Dd December 24, 2006 +.Dt ACPICPU 4 +.Os +.Sh NAME +.Nm acpicpu +.Nd ACPI Processor Power and Performance State +.Sh SYNOPSIS +.Cd "acpicpu* at acpi?" +.Sh DESCRIPTION +The +.Nm +driver provides support for extracting processor power and performance +levels from ACPI tables. +This information can be used to throttle processor speed to reduce +power usage and extend battery life through the hw.setperf +.Xr sysctl 3 +mechanism. +.Sh SEE ALSO +.Xr sysctl 3 , +.Xr cpu 4 , +.Xr intro 4 , +.Xr apmd 8 , +.Xr sysctl 8 +.Sh HISTORY +The +.Nm +driver first appeared in +.Ox 3.9 . +.Sh AUTHORS +.An -nosplit +The +.Nm +driver was written by +.An Marco Peereboom Aq marco@openbsd.org . |