Hardware temperatures (sensors_temperatures())

[giampaolo]

From g.rodola on April 24, 2013 14:59:32

Proposal

I borrowed this idea from glances: https://github.com/nicolargo/glances
...which internally uses pysensors: https://pypi.python.org/pypi/PySensors/
API may look like this:

>>> psutil.cpu_temperature()
[cputemp(name='cpu1', temp=35, high=70, critical=90), 
 cputemp(name='cpu2', temp=30, high=70, critical=90,
 ...]

psutil.cpu_temperature(celsius=False) could be used to express temperature in
fahrenheit. The order in which CPUs are returned should be the same as other cpu_*
functions and be consistent across calls so that:

>>> psutil.cpu_temperature()[0]

...and:

>>> psutil.cpu_times(percpu=True)[0]

...will refer to the same CPU.

FreeBSD: http://superuser.com/questions/344498/get-temperature-of-cpu-intel-core-i5-in-freebsd

Original issue: http://code.google.com/p/psutil/issues/detail?id=371

[giampaolo]

From g.rodola on April 27, 2013 09:36:58

Committed in revision 22a650567ba7 in a separate branch by parsing files in /sys/class/hwmon/hwmon_/temp1__.
It is probably incomplete compared to what we can get via lm-sensors though so care should be taken on whether adding this or not.

Status: Started

[giampaolo]

From g.rodola on June 17, 2013 03:53:59

OSX: https://jira.hyperic.com/browse/SIGAR-12

[giampaolo]

From jlo...@gmail.com on June 17, 2013 11:49:37

Neither of these works on my macbook running 10.8.4:

[root@macbook ]# sysctl kern.cpu_temp_is_valid
second level name cpu_temp_is_valid in kern.cpu_temp_is_valid is invalid

[root@macbook ]$ sysctl kern.cpu_temp
second level name cpu_temp in kern.cpu_temp is invalid

I also don't see any reference to temp sensors in sysctlbyname docs:
https://developer.apple.com/library/mac/documentation/Darwin/Reference/ManPages/man3/sysctlbyname.3.html

[thijstriemstra]

Would also like to see this feature. For RaspberryPi I'm now using:

def get_cpu_temperature():
    """
    Get CPU temperature.
    """
    with open('/sys/class/thermal/thermal_zone0/temp', 'r') as f:
        temp = float(f.read()) / 1000.0

    return temp

But this doesn't work on OSX for example.

[thijstriemstra]

Here's some C-code that gets the OSX temperature: https://github.com/lavoiesl/osx-cpu-temp

[giampaolo]

Other OSX resource: https://github.com/stevedekorte/io/blob/master/addons/AppleSensors/source/IoAppleSensors.c

[giampaolo]

Attaching a modified version of osx-cpu-temp C source code which I managed to compile (by modifying the Makefile). I get temperature == 0.0 but I suppose that's because I'm virtualizing OSX hence there are no sensors.
osx-cpu-temp.zip

[giampaolo]

I'm not gonna have a chance to implement this on OSX as I don't have the hardware.