diff options
Diffstat (limited to 'share/man/man4/man4.amd64/cpu.4')
| -rw-r--r-- | share/man/man4/man4.amd64/cpu.4 | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/share/man/man4/man4.amd64/cpu.4 b/share/man/man4/man4.amd64/cpu.4 index 050218b9110..319ca849b1f 100644 --- a/share/man/man4/man4.amd64/cpu.4 +++ b/share/man/man4/man4.amd64/cpu.4 @@ -1,4 +1,4 @@ -.\" $OpenBSD: cpu.4,v 1.5 2017/12/29 13:27:36 fcambus Exp $ +.\" $OpenBSD: cpu.4,v 1.6 2018/01/05 22:25:05 jmc Exp $ .\" .\" Copyright (c) 2004 Ted Unangst .\" All rights reserved. @@ -23,7 +23,7 @@ .\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF .\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. .\" -.Dd $Mdocdate: December 29 2017 $ +.Dd $Mdocdate: January 5 2018 $ .Dt CPU 4 amd64 .Os .Sh NAME @@ -38,24 +38,24 @@ functionality, such as power and frequency control or thermal monitoring. .Sh FREQUENCY CONTROL The .Xr sysctl 3 -hw.cpuspeed will return the current operating frequency of the processor -(on some processors this value may be an approximation). +hw.cpuspeed returns the current operating frequency of the processor, +though on some processors this value may be only an approximation. If possible, speed may be adjusted by altering hw.setperf from 0 to 100, representing percentage of maximum speed. There are several possible implementations for setperf, all transparent -to the user. +to the user: .Bl -tag -width tenletters .It EST Enhanced SpeedStep found on Intel and VIA processors, -offers frequency scaling with numerous positions. +offering frequency scaling with numerous positions. .It PowerNow Found on various AMD processors. -Currently only supports a limited set of models in the K8 families. +It currently only supports a limited set of models in the K8 families. .El .Sh THERMAL MONITORING The .Xr sysctl 3 -hw.sensors.cpu*.temp0 will return the current temperature reported by the +hw.sensors.cpu*.temp0 returns the current temperature reported by the processor. .Sh SEE ALSO .Xr sysctl 8 @@ -64,5 +64,5 @@ Due to the way in which thermal information is reported on Intel processors, the temperature may be off by exactly +/-15 degrees C. .Pp For multiprocessor kernels with more than one CPU sensor, -processors will report identical temperatures +processors report identical temperatures since the temperature is taken from the processor running the sensors update. |