temperature in FreeBSD
You can read data from FreeBSD kernel using any one the following method.
How to determine CPU temperature on FreeBSD
You just need to type the following command to see cpu temperature in FreeBSD operating system:
$ sysctl -a | grep temperature
OR
$ sysctl dev.cpu | grep temperature
Sample outputs:
(optional) Load coretemp driver at boot time
For Intel based cpu you need to load or use coretemp driver. To load the driver as a module at boot time, append the following line in loader.conf(5):
# vi /boot/loader.conf
Append the following:
coretemp_load="YES"
Save and close the file. To load the driver without rebooting the box, enter:
# kldload coretemp
Once loaded you can verify it with dmesg command
# dmesg | tail -10
Sample outputs:
igb0: link state changed to UP arp: 192.168.2.254 moved from 20:5c:24:70:00:f8 to 00:08:a2:0a:ba:b8 on igb0 coretemp0: <CPU On-Die Thermal Sensors> on cpu0 coretemp1: <CPU On-Die Thermal Sensors> on cpu1 coretemp2: <CPU On-Die Thermal Sensors> on cpu2 coretemp3: <CPU On-Die Thermal Sensors> on cpu3 coretemp4: <CPU On-Die Thermal Sensors> on cpu4 coretemp5: <CPU On-Die Thermal Sensors> on cpu5 coretemp6: <CPU On-Die Thermal Sensors> on cpu6 coretemp7: <CPU On-Die Thermal Sensors> on cpu7
Now to determine your CPU temperature on FreeBSD, type:
# sysctl -a | grep -i temperature
Sample output from Intel Xeon E3-1285L v4 CPU:
hw.acpi.thermal.tz1.temperature: 29.9C
hw.acpi.thermal.tz0.temperature: 27.9C
dev.cpu.7.temperature: 41.0C
dev.cpu.6.temperature: 41.0C
dev.cpu.5.temperature: 40.0C
dev.cpu.4.temperature: 40.0C
dev.cpu.3.temperature: 41.0C
dev.cpu.2.temperature: 41.0C
dev.cpu.1.temperature: 40.0C
dev.cpu.0.temperature: 40.0C
A note about ipmitool
To see detailed sensor information use ipmitool (Intelligent Platform Management Interface) command as follows on your FreeBSD based server:
# ipmitool sensor
Sample outputs:
ATX+5VSB | 5.070 | Volts | ok | 4.230 | 4.710 | na | na | 5.550 | 5.610 +3VSB | 3.500 | Volts | ok | 2.780 | 2.820 | na | na | 3.660 | 3.680 Vcore | 0.830 | Volts | ok | 0.540 | 0.560 | 0.600 | 1.490 | 1.560 | 1.640 VCCM | 1.350 | Volts | ok | 1.090 | 1.120 | na | na | 1.720 | 1.750 +1.1 | 1.090 | Volts | ok | 0.850 | 0.890 | 0.940 | 1.150 | 1.210 | 1.270 +1.0 | 1.020 | Volts | ok | 0.850 | 0.890 | 0.940 | 1.150 | 1.210 | 1.270 BAT | 3.200 | Volts | ok | 2.380 | 2.500 | na | na | 3.580 | 3.680 +3V | 3.300 | Volts | ok | 2.780 | 2.820 | na | na | 3.660 | 3.680 +5V | 5.010 | Volts | ok | 4.230 | 4.710 | na | na | 5.550 | 5.610 +12V | 12.200 | Volts | ok | 10.100 | 10.300 | na | na | 13.300 | 13.400 CPU_FAN1 | na | RPM | na | na | na | 100.000 | na | na | na REAR_FAN1 | na | RPM | na | na | na | 100.000 | na | na | na FRNT_FAN1 | na | RPM | na | na | na | 100.000 | na | na | na FRNT_FAN2 | na | RPM | na | na | na | 100.000 | na | na | na REAR_FAN2 | 1200.000 | RPM | ok | na | na | 100.000 | na | na | na CPU_FAN2 | na | RPM | na | na | na | 100.000 | na | na | na MB Temperature | 55.000 | degrees C | ok | na | na | na | 80.000 | na | na CPU Temperature | 52.000 | degrees C | ok | na | na | na | 80.000 | 85.000 | 90.00
2 comment
AMD
#kldload amdtemp
#sysctl -a | grep temperature
dev.cpu.1.temperature: 40.3C
dev.cpu.0.temperature: 40.3C
Ron, thank you sir! i have added amdtemp into my loader.conf thanks to you!