xref: /dragonfly/usr.sbin/powerd/powerd.8 (revision 926deccb)
1.\" (c) Copyright 2010 by Matthew Dillon and Dima Ruban.  Permission to
2.\"    use and distribute based on the DragonFly copyright.
3.\"
4.Dd June 28, 2010
5.Dt POWERD 8
6.Os
7.Sh NAME
8.Nm powerd
9.Nd simple ACPI based CPU/power control
10.Sh SYNOPSIS
11.Nm
12.Op Fl d
13.Sh DESCRIPTION
14The
15.Nm
16daemon monitors the CPU load and automatically adjusts the CPU
17frequency up or down.
18.Pp
19All CPUs will be set to their maximum frequency when the 1 second
20machine load exceeds 25% of one CPU.  All CPUs will be set to their
21minimum frequency when the 10 second machine load drops below 12% of
22one CPU.
23.Pp
24The options are as follows:
25.Bl -tag -width Fl
26.It Fl d
27Debug option.
28Causes
29.Nm
30to not go to the background and prints some debug output to
31.Va stdout .
32.El
33.Sh DIAGNOSTICS
34The
35.Nm
36utility will exit with a non-zero code if the required sysctls are not
37present.
38.Sh SEE ALSO
39.Xr acpi 4
40.Sh HISTORY
41The
42.Nm
43command first appeared in
44.Dx 2.7 .
45.Sh BUGS
46I'm shocked I tell you, shocked that there might be bugs in this program!
47