Difference between revisions of "CPU Temperature"
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==Overview== | ==Overview== | ||
Systems that freeze after a period of use (but not when started cold) may be having problems with overheating. This is especially true for laptops. You can use lm-sensors to determine the temperature of the CPU. | Systems that freeze after a period of use (but not when started cold) may be having problems with overheating. This is especially true for laptops. You can use lm-sensors to determine the temperature of the CPU. | ||
| − | ==Using lm- | + | ==Using lm-sensors== |
| − | + | ====Install and Configure lm-sensors==== | |
* Install the lm-sensors package (see InstallingSoftware). | * Install the lm-sensors package (see InstallingSoftware). | ||
*Run sudo sensors-detect and answer YES to all YES/no questions. I generally use the ISA bus rather than the SMBus bus, your choice to this question!. | *Run sudo sensors-detect and answer YES to all YES/no questions. I generally use the ISA bus rather than the SMBus bus, your choice to this question!. | ||
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*Next, run "sudo /etc/init.d/module-init-tools". This will read the changes you made to /etc/modules in step 3, and insert the new modules into the kernel. | *Next, run "sudo /etc/init.d/module-init-tools". This will read the changes you made to /etc/modules in step 3, and insert the new modules into the kernel. | ||
*Run "sensors" to get temperature readings. | *Run "sensors" to get temperature readings. | ||
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| + | ====Run a Stress Test==== | ||
It is useful to have this running continuously and also have it logging to a file. The following file will record the output of sensors and uptime (so you can monitor the load and get a timestamp) in a file, every 30 seconds and display it on the screen (thanks to the magic of tee and an infinite loop). | It is useful to have this running continuously and also have it logging to a file. The following file will record the output of sensors and uptime (so you can monitor the load and get a timestamp) in a file, every 30 seconds and display it on the screen (thanks to the magic of tee and an infinite loop). | ||
| − | while | + | while [[ true ]] ; do uptime ; sensors ; sleep 30s; done | tee temp_load.log |
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| + | Run that command in one terminal window and this in another: | ||
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| + | stress --cpu 8 --io 4 --vm 2 --vm-bytes 128M --timeout 4h | ||
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| + | This will stress the machine for four hours, or until it crashes ;) | ||
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| + | (add <code> --hdd 2</code> to stress the hard drive as well, though this shouldn't be necessary) | ||
==More Information== | ==More Information== | ||
The ubuntu-maintained page can be found [https://help.ubuntu.com/community/SensorInstallHowto here.] | The ubuntu-maintained page can be found [https://help.ubuntu.com/community/SensorInstallHowto here.] | ||
| + | This page contains commands written thanks to the magic of tea! | ||
[[Category:Tech support]] | [[Category:Tech support]] | ||
Latest revision as of 12:36, 9 May 2014
 This page has been migrated to a document on Free Geek's Google Drive. Information remaining behind may no longer be relevant. MIGRATOR: When you have tagged this page as migrated, (Link to new page immediately below.) |
Overview
Systems that freeze after a period of use (but not when started cold) may be having problems with overheating. This is especially true for laptops. You can use lm-sensors to determine the temperature of the CPU.
Using lm-sensors
Install and Configure lm-sensors
- Install the lm-sensors package (see InstallingSoftware).
- Run sudo sensors-detect and answer YES to all YES/no questions. I generally use the ISA bus rather than the SMBus bus, your choice to this question!.
- At the end of sensors-detect, a list of modules that needs to be loaded will displayed. Type "yes" to have sensors-detect insert those modules into /etc/modules, or edit /etc/modules yourself.
- Next, run "sudo /etc/init.d/module-init-tools". This will read the changes you made to /etc/modules in step 3, and insert the new modules into the kernel.
- Run "sensors" to get temperature readings.
Run a Stress Test
It is useful to have this running continuously and also have it logging to a file. The following file will record the output of sensors and uptime (so you can monitor the load and get a timestamp) in a file, every 30 seconds and display it on the screen (thanks to the magic of tee and an infinite loop).
while [[ true ]] ; do uptime ; sensors ; sleep 30s; done | tee temp_load.log
Run that command in one terminal window and this in another:
stress --cpu 8 --io 4 --vm 2 --vm-bytes 128M --timeout 4h
This will stress the machine for four hours, or until it crashes ;)
(add --hdd 2 to stress the hard drive as well, though this shouldn't be necessary)
More Information
The ubuntu-maintained page can be found here.
This page contains commands written thanks to the magic of tea!