| powerd.8 (d91382866fc261ac16cf78f204eb7490f082f3d4) | powerd.8 (98b486dc7ae5cb865fb38621a1ac7dca7fefa515) |
|---|---|
| 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.\" | 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 January 6, 2019 | 27.Dd March 3, 2020 |
| 28.Dt POWERD 8 29.Os 30.Sh NAME 31.Nm powerd 32.Nd "system power control utility" 33.Sh SYNOPSIS 34.Nm 35.Op Fl a Ar mode 36.Op Fl b Ar mode 37.Op Fl i Ar percent | 28.Dt POWERD 8 29.Os 30.Sh NAME 31.Nm powerd 32.Nd "system power control utility" 33.Sh SYNOPSIS 34.Nm 35.Op Fl a Ar mode 36.Op Fl b Ar mode 37.Op Fl i Ar percent |
| 38.Op Fl m Ar freq | |
| 39.Op Fl M Ar freq | 38.Op Fl M Ar freq |
| 39.Op Fl m Ar freq |
|
| 40.Op Fl N 41.Op Fl n Ar mode | 40.Op Fl N 41.Op Fl n Ar mode |
| 42.Op Fl p Ar ival | |
| 43.Op Fl P Ar pidfile | 42.Op Fl P Ar pidfile |
| 43.Op Fl p Ar ival |
|
| 44.Op Fl r Ar percent 45.Op Fl s Ar source 46.Op Fl v 47.Sh DESCRIPTION 48The 49.Nm 50utility monitors the system state and sets various power control options 51accordingly. 52It offers power-saving modes that can be 53individually selected for operation on AC power or batteries. | 44.Op Fl r Ar percent 45.Op Fl s Ar source 46.Op Fl v 47.Sh DESCRIPTION 48The 49.Nm 50utility monitors the system state and sets various power control options 51accordingly. 52It offers power-saving modes that can be 53individually selected for operation on AC power or batteries. |
| 54.Bl -tag -width ".Ar hiadaptive" 55.It Ar maximum | 54.Bl -tag -width "hiadaptive" 55.It Cm maximum |
| 56Choose the highest performance values. 57May be abbreviated as | 56Choose the highest performance values. 57May be abbreviated as |
| 58.Ar max . 59.It Ar minimum | 58.Cm max . 59.It Cm minimum |
| 60Choose the lowest performance values to get the most power savings. 61May be abbreviated as | 60Choose the lowest performance values to get the most power savings. 61May be abbreviated as |
| 62.Ar min . 63.It Ar adaptive | 62.Cm min . 63.It Cm adaptive |
| 64Attempt to strike a balance by degrading performance when the system 65appears idle and increasing it when the system is busy. 66It offers a good balance between a small performance loss for greatly 67increased power savings. 68May be abbreviated as | 64Attempt to strike a balance by degrading performance when the system 65appears idle and increasing it when the system is busy. 66It offers a good balance between a small performance loss for greatly 67increased power savings. 68May be abbreviated as |
| 69.Ar adp . 70.It Ar hiadaptive | 69.Cm adp . 70.It Cm hiadaptive |
| 71Like | 71Like |
| 72.Ar adaptive | 72.Cm adaptive |
| 73mode, but tuned for systems where performance and interactivity are 74more important than power consumption. 75It increases frequency faster, reduces frequency less aggressively, and 76will maintain full frequency for longer. 77May be abbreviated as | 73mode, but tuned for systems where performance and interactivity are 74more important than power consumption. 75It increases frequency faster, reduces frequency less aggressively, and 76will maintain full frequency for longer. 77May be abbreviated as |
| 78.Ar hadp . | 78.Cm hadp . |
| 79.El 80.Pp 81The default mode is | 79.El 80.Pp 81The default mode is |
| 82.Ar adaptive | 82.Cm adaptive |
| 83for battery power and | 83for battery power and |
| 84.Ar hiadaptive | 84.Cm hiadaptive |
| 85for the rest. 86.Pp 87.Nm 88recognizes these runtime options: | 85for the rest. 86.Pp 87.Nm 88recognizes these runtime options: |
| 89.Bl -tag -width ".Fl r Ar percent" | 89.Bl -tag -width "-r percent" |
| 90.It Fl a Ar mode 91Selects the 92.Ar mode 93to use while on AC power. 94.It Fl b Ar mode 95Selects the 96.Ar mode 97to use while on battery power. 98.It Fl i Ar percent 99Specifies the CPU load percent level when adaptive 100mode should begin to degrade performance to save power. 101The default is 50% or lower. | 90.It Fl a Ar mode 91Selects the 92.Ar mode 93to use while on AC power. 94.It Fl b Ar mode 95Selects the 96.Ar mode 97to use while on battery power. 98.It Fl i Ar percent 99Specifies the CPU load percent level when adaptive 100mode should begin to degrade performance to save power. 101The default is 50% or lower. |
| 102.It Fl m Ar freq 103Specifies the minimum frequency to throttle down to. | |
| 104.It Fl M Ar freq 105Specifies the maximum frequency to throttle up to. | 102.It Fl M Ar freq 103Specifies the maximum frequency to throttle up to. |
| 104.It Fl m Ar freq 105Specifies the minimum frequency to throttle down to. |
|
| 106.It Fl N 107Treat "nice" time as idle for the purpose of load calculation; | 106.It Fl N 107Treat "nice" time as idle for the purpose of load calculation; |
| 108i.e. do not increase the CPU frequency if the CPU is only busy | 108i.e., do not increase the CPU frequency if the CPU is only busy |
| 109with "nice" processes. 110.It Fl n Ar mode 111Selects the 112.Ar mode 113to use normally when the AC line state is unknown. | 109with "nice" processes. 110.It Fl n Ar mode 111Selects the 112.Ar mode 113to use normally when the AC line state is unknown. |
| 114.It Fl P Ar pidfile 115Specifies an alternative file in which the process ID should be stored. |
|
| 114.It Fl p Ar ival 115Specifies a different polling interval (in milliseconds) for AC line state 116and system idle levels. 117The default is 250 ms. | 116.It Fl p Ar ival 117Specifies a different polling interval (in milliseconds) for AC line state 118and system idle levels. 119The default is 250 ms. |
| 118.It Fl P Ar pidfile 119Specifies an alternative file in which the process ID should be stored. 120The default is 121.Pa /var/run/powerd.pid . | |
| 122.It Fl r Ar percent 123Specifies the CPU load percent level where adaptive 124mode should consider the CPU running and increase performance. 125The default is 75% or higher. 126.It Fl s Ar source 127Enforces method for AC line state refresh; by default, it is chosen 128automatically. 129The set of valid methods is 130.Cm sysctl , devd 131and 132.Cm apm 133(i386 only). 134.It Fl v 135Verbose mode. 136Messages about power changes will be printed to stdout and 137.Nm 138will operate in the foreground. 139.El | 120.It Fl r Ar percent 121Specifies the CPU load percent level where adaptive 122mode should consider the CPU running and increase performance. 123The default is 75% or higher. 124.It Fl s Ar source 125Enforces method for AC line state refresh; by default, it is chosen 126automatically. 127The set of valid methods is 128.Cm sysctl , devd 129and 130.Cm apm 131(i386 only). 132.It Fl v 133Verbose mode. 134Messages about power changes will be printed to stdout and 135.Nm 136will operate in the foreground. 137.El |
| 138.Sh FILES 139.Bl -tag -width "/var/run/powerd.pid" 140.It Pa /var/run/powerd.pid 141The default PID file. 142.El |
|
| 140.Sh SEE ALSO 141.Xr acpi 4 , 142.Xr apm 4 , 143.Xr cpufreq 4 144.Sh HISTORY 145The 146.Nm 147utility first appeared in --- 30 unchanged lines hidden --- | 143.Sh SEE ALSO 144.Xr acpi 4 , 145.Xr apm 4 , 146.Xr cpufreq 4 147.Sh HISTORY 148The 149.Nm 150utility first appeared in --- 30 unchanged lines hidden --- |