Measuring CPU temperatures
The temperature readings recorded when tested without a case ranged between 27°C and 29°C.
cat /sys/class/thermal/thermal_zone*/temp
29063Operating the R4 fan effectively through setting a trip point.
echo 35000 > /sys/class/thermal/thermal_zone0/trip_point_2_tempThe command “echo 35000 > /sys/class/thermal/thermal_zone0/trip_point_2_temp” configures a thermal trip point at 35°C for the designated thermal zone in a Linux system. This plays a vital role in the thermal management system, safeguarding the hardware components by effectively regulating the system temperature and averting overheating. Ultimately, this practice bolsters the system’s stability and enhances the longevity of its hardware components.
Purpose of the Command
- Setting a Trip Point:
- By writing 35000 (which translates to 35 °C) to
trip_point_2_temp, you are configuring the system to use this temperature as a threshold for thermal management. When the temperature of the thermal zone reaches this point, the system takes action as activating our fan.
Here’s a detailed breakdown of what this command does:
- echo 35000:
- This part of the command is used to send the value 35000 to a file. In the context of temperature, this value is usually in millidegrees Celsius. In our case, which translates to 35°C).
- The > operator utilized to direct the output of the echo command to a file is known as “redirection.” In this case, it writes the value to the specified path.
- /sys/class/thermal/thermal_zone0/trip_point_2_temp:
- This is the path to a special file in the sysfs interface, which is used by the Linux kernel to expose kernel parameters to user space.
- thermal_zone0 refers to a specific thermal zone monitored by the system, and trip_point_2_temp is one of the trip points for that thermal zone. Trip points are temperature thresholds that trigger specific actions when reached.
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