1.\" 2.\" Copyright (c) 2015 The DragonFly Project. 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.\" 8.\" 1. Redistributions of source code must retain the above copyright 9.\" notice, this list of conditions and the following disclaimer. 10.\" 2. Redistributions in binary form must reproduce the above copyright 11.\" notice, this list of conditions and the following disclaimer in 12.\" the documentation and/or other materials provided with the 13.\" distribution. 14.\" 3. Neither the name of The DragonFly Project nor the names of its 15.\" contributors may be used to endorse or promote products derived 16.\" from this software without specific, prior written permission. 17.\" 18.\" THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20.\" LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 21.\" FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 22.\" COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 23.\" INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, 24.\" BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 25.\" LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 26.\" AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 27.\" OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 28.\" OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29.\" SUCH DAMAGE. 30.\" 31.Dd February 12, 2015 32.Dt MEMTEMP 4 33.Os 34.Sh NAME 35.Nm memtemp 36.Nd device driver for memory thermal sensor 37.Sh SYNOPSIS 38To compile this driver into the kernel, 39place the following lines in your kernel configuration file: 40.Bd -ragged -offset indent 41.Cd "device coremctl" 42.Cd "device memtemp" 43.Ed 44.Pp 45Alternatively, to load the driver as a 46module at boot time, place the following line in 47.Xr loader.conf 5 : 48.Bd -literal -offset indent 49memtemp_load="YES" 50.Ed 51.Sh DESCRIPTION 52The 53.Nm 54driver provides support for the memory thermal sensor. 55The values are exposed through the 56.Dv HW_SENSORS 57.Xr sysctl 3 58tree. 59For example: 60.Bd -literal -offset indent 61%sysctl hw.sensors 62hw.sensors.dimm0.temp0: 39.00 degC 63hw.sensors.dimm3.temp0: 40.00 degC 64hw.sensors.dimm6.temp0: 35.00 degC 65hw.sensors.dimm9.temp0: 33.00 degC 66hw.sensors.dimm12.temp0: 29.00 degC 67hw.sensors.dimm15.temp0: 35.00 degC 68hw.sensors.dimm18.temp0: 33.00 degC 69hw.sensors.dimm21.temp0: 31.00 degC 70.Ed 71.Sh HARDWARE 72The 73.Nm 74driver supports the following memory thermal sensors: 75.Pp 76.Bl -bullet -compact 77.It 78Intel E5 v2 memory thermal sensors 79.It 80Intel E5 v3 memory thermal sensors 81.It 82Intel E3 v3 memory thermal sensors 83.It 84Intel Core i3/i5/i7 Haswell thermal sensors 85.El 86.Sh SEE ALSO 87.Xr systat 1 , 88.Xr sysctl 3 , 89.Xr sensorsd 8 , 90.Xr sysctl 8 91.Sh HISTORY 92The 93.Nm 94driver first appeared in 95.Dx 4.1 . 96.Sh AUTHORS 97.An -nosplit 98The 99.Nm 100driver was written by 101.An Sepherosa Ziehau Aq Mt sepherosa@gmail.com . 102