Psensor – A Graphical Hardware Temperature Monitoring Tool for Linux

Psensor is a GTK+ (Widget Toolkit for creating Graphical User Interface) based application software. It is one the simplest application to monitor hardware temperature and plot Real Time graph from the obtained data for quick review.

Linux Hardware Temperature Monitoring

Psensor – Linux Hardware Temperature Monitoring

Features of Psensor

  1. Show Temperature of motherboard, CPU, GPU (Nvidia), Hard Disk Drives.
  2. Show CPU fan speed.
  3. Psensor is capable of showing remote server Temperature and Fan Speed.
  4. Show CPU usages, as well.
  5. Infact Psensor will detect any supported Hardware and report the Temperature as text and over graph, automatically.
  6. All the temperatures are plotted in one graph.
  7. Alarms and Alerts ensures you don’t miss a critical System Hardware Temperature and Fan Speed related issues.
  8. Easy to Configure. Easy to use.


  1. lm-sensor and hddtemp: : Psensor depends upon these two packages to get the reports about temperature and fan speed.
  2. psensor-server : It is an optional package, which is required if you want to gather information about Remote Server Temperature and Fan Speed.

Installation of Psensor in Linux

1. As I said above that Psensor program depends on lm-sensor and hddtemp package and these two packages must installed on the system in order to install Psensor.

Both these two packages are available in the official repository of most of the standard Linux distributions, but in RedHat/CentOS based systems, you need to install and enable epel-release repository to get these packages.

On Debian, Ubuntu and Mint

# apt-get install lm-sensors hddtemp

On RedHat, CentOS and Fedora

# yum install epel-release 
# yum install lm_sensors lm_sensors-devel hddtemp

Note: If you are using Fedora 22, replace yum with dnf in above command.

2. Once these two dependencies installed on the system, you can install Psensor on Debian alike systems using following commands.

# apt-get install psensor

Unfortunately, on RedHat alike systems, Psensor isn’t available from the default system repository, and you need to compile it from source as shown below.

# yum install gcc gtk3-devel GConf2-devel cppcheck libatasmart-devel libcurl-devel json-c-devel libmicrohttpd-devel help2man libnotify-devel libgtop2-devel make 

Next, download the most recent stable Psensor (i.e version 1.1.3) source tarball and compile it using following commands.

# wget 
# tar zxvf psensor-1.1.3.tar.gz 
# cd psensor-1.1.3/ 
# ./configure 
# make 
# make install

3. Install Psensor Server – optional. It is required only if you want to see the temperature and fan speed of remote server.

# apt-get install psensor-server

Note: That the Psensor Server package is only available under Debian alike systems, there isn’t any binary or source packages available for RedHat systems.

Testing and Usage of Psensor

4. It is optional but suggestive step you should follow. Run sensors-detect, as root to diagnose the hardware’s by sensors. Every Time Type the default option ‘Yes’, until you know what you are doing.

# sensors-detect
Detect Sensors

Detect Sensors

5. Again Optional but suggestive setup you should follow. Run sensors, as root to display the temperature of various Hardware Devices. All these Data will be used for Psensor.

# sensors
Check Temperature Hardware

Check Temperature Hardware

6. Run Psensor, from the desktop Application Menu to get the graphical view.

Temperature Hardware Monitoring

Temperature Hardware Monitoring

Check mark all the Sensors to plot graph. You may notice the color codes.

Plot Graphs of Hardware Temperature

Plot Graphs of Hardware Temperature

Customize Psensor

7. Go to Menu PsensorPreferencesInterface. From here, you can have options for Interface related customization, Temperature Unit and Sensor table Position.

Psensor Interface Customization

Psensor Interface Customization

8. Under Menu PsensorPreferencesStartup. From here, you can configure Launch/Hide at Startup and Restore Window Position and Size.

Control Psensor

Control Psensor

9. Under the Hood Graph (PsensorPreferencesGraph), you may configure Foreground/Background Color, Monitoring Duration, Update Interval, etc.

Psensor Graph Customization

Psensor Graph Customization

10. You may configure Sensors Settings under (PsensorPreferences → Sensors).

Sensors Settings

Sensors Settings

11. The last tab (PsensorPreferencesProviders) provides you with Enable/Disable configuration for all the sensors.

Psensor Configuration Control

Psensor Configuration Control

You may do sensor Preferences under (PsensorSensor Preferences).

Give Sensor Name

Give Sensor Name

Give Sensor Color

Give Sensor Color

Set Sensor Threshold

Set Sensor Threshold

Enable Sensor Indicator

Enable Sensor Indicator


Psensor is a very useful tool which lets you see those gray areas of system monitoring which is often overlooked upon i.e., Hardware temperature monitoring. A over heating Hardware may damage that particular hardware, other hardware in the surrounding or may crash the whole system.

No, I am not thinking from financial perspective. Think of the value of Data that might loose and the cost and time it will take to build the system again. Hence it is always a good idea to have a tool like Psensor beside ourselves to avoid any such risk.

Installation on Debian alike system is pretty simple. For CentOS and alike System, installation is a bit tricky.

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11 Responses

  1. twinspar says:

    I’m really struggling with this. Linux newbie, wanting to troubleshoot unexplained shutdowns. Running Debian GNU/Linux 9 (stretch) 64-bit. Could find no clues in log files, so I figured monitoring CPU temp might help.

    Had to download/install compiler to get this far. Now I keep getting this error at the ‘# make’ step:

     In file included from ./hdd.h:23:0,
                     from hdd_hddtemp.c:37:
    ./psensor.h:22:29: fatal error: sensors/sensors.h: No such file or directory

    What do I need to do?

    • Ravi Saive says:


      Why you compiling? when you can easily install using package manager as shown.

      # apt-get install lm-sensors hddtemp
  2. Tech in San Diego says:

    I love psensor and use it on all of my computers, especially my 5 laptops. I would like to use the shutdown feature script but I havent been able to get it to work. If anyone has a script/template that I can use on my Linux machines, I’d be very grateful.

    I also need to know where the sensor log files are located and if I can move them to another location so that other Administrators can have access to them?

  3. Ganjip says:

    Hi, How accurate are Psensor’s readings?

  4. Pablo says:

    I get an error saying that “C compiler cannot create executables”, after running ./configure command. Linux Mint 17.1

  5. N Babu says:

    Thank you for the nice article. Is it possible to display an alert and shutdown the system when the temperature goes beyond certain predefined level?

    Synaptic package manager in Ubuntu contains psensor, psensor-common, psensor-server (version 1.1.3-2ubuntu3),

    hope i can mark and install with this version also.

    • N Babu says:

      saw the alert facility, no idea about optimal threshold temperature in terms of value for various cores, cpu usage, free memory, hdd. thanks.

  6. lala says:

    superb instructions. make it easy even for a centos user.

  7. Naveej says:

    Very nice article that I used on my F23. However, please add a missing package in Step 2 for Fedora/Redhat/CentOS to include “yum install lm_sensors-devel” as the make command was complaining about a missing header file.

    • Ravi Saive says:


      Thanks for finding this article useful and also thanks for point out that missing dependency about lm_sensors-devel package, as per your suggestion, we’ve updated the article..

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