Operating temperature


#1

Hi,

I am a bit surprised by the temperature the router is running. The CPU usage is very low but the temperature is at 77 C. It looks quite high for an idle system.

root@turris:~# thermometer CPU: 77 root@turris:~# cat /proc/loadavg 0.00 0.00 0.00 1/130 30042

Should I worry?

Many thanks,

Antoine


#2

Mine said 73 C also no real load.


#3

Idle

# thermometer
CPU:    75

# sensors
armada_thermal-virtual-0
Adapter: Virtual device
temp1:        +74.6°C
# cat /sys/class/thermal/thermal_zone0/temp
74642

Stress for 3 minutes

# stress -c 2 -t 3m
# sensors
armada_thermal-virtual-0
Adapter: Virtual device
temp1:       +100.4°C

I really hope those readings are off by at least 20°C…


#4

It should be possible to put there FAN through GPIO, but I didn’t test it and I can’t, because I’m still waiting for my Omnia.

From https://www.turris.cz/doc/_media/en/howto/omnia_manual_en.pdf
" The operating temperatures of the device are 0°C to 40°C "

Operating conditions:
Ambient temperature: 0° to 40 °C
Storage Temperature: -40°C to 70°C


#5

You had fears of temperatures, you will find how I solved it


#6

hello everyone,
i am realy interested in buying but this conerns me!
i hope someone track this down if its only hapening with a few models or if its more like a general problem with all routers… this would be a no go for me then
can some more people tell the temperature of their devices please?
thank you :slight_smile:


#7

I walked through their measurement and assume a shift temperatures about 20 degrees up compared to sensors on board
I buy only board. complete with Turris cools not only cooler but also case


#9

Based on your post, the sensor showed 59°C, while an external thermometer showed 42°C. Can someone else confirm this?


#10

Just received my Turris Omnia today and mine also has “high” temperatures:
`# thermometer
CPU: 68

sensors

armada_thermal-virtual-0
Adapter: Virtual device
temp1: +68.5°C
`
I say “high” because the cpu is a passively cooled dualcore chip running at 1,6 GHz.
When comparing the temps to a similar product (same chipset, same clock speed), the Linksys WRT1900ACS, they seem to be in line according to posts by users of the WRT (source 1, source 2, more can be found by Google-ing). Thus, they appear to be normal temps and our hardware should be able to handle it. However, it would be nice if the Turris Omnia team could enlighten us on this issue.

So if you are worried about those temps, there are a few things you could do:
-Add a better heat sink
-Add a usb fan
-Replace the heat sink with a fan
-Replace the router with a cooler running model router

When I have the time, I’ll probably go for option 3 :wink:


#11

High? 77°C is nothing. This in not desktop, these ARM CPUs for routers can usually go up to 120-130°C. Better look up the specs.


#12

Unlike the measurement temperature sensor was 70 vs 43 photos emerged during editing about 12 hours


#13

src please. what specs are you referring to?


#14

Specs for the Marvel ARMADA SoC.

ARMADA 38x SoC maximum die temperature must be below 115°C in both Commercial and Industrial grades.

100°C is pretty normal temperature.

In Turris 1 is Freescale PPC 1.2GHz.

temperature range of -40 °C to +125 °C


#15

thx! i guess you got this from the specs of the clearfog board? i’m still unable to find any “official” data from marvell, but that’s good enough :wink:


#16

I found it on several places mentioned. But yes, I am unable to locate it in 1432 pages manual.


#17

There is another manual called Hardware Specifications but it seems this is only available under NDA.

The MV78260 Hardware Specifications give the following data:
Absolute Maximum ratings:
Storage temperature and Case temperature -40 to 125 °C
Recommended Operating Conditions:
Junction Temperature 0 to 105 °C
The section Thermal power dissipation even gives this:
The device was characterized and tested for production at 105°C. The other data points are for reference purposes only.

So 100 degrees seem just fine for these SoC.

Edit: If someone gets the 88F6820 Hardware Specifications i would like to get a glance at these as it has the MPP pin mux settings and map. The one in the kernel is incomplete and i am search for AU_SPDIFO. It could be on GPIO 44 or 47.


Omnia initial issues
First Week with Omnia: Not a reliable Device!
#18

root@turris:~# sensors
armada_thermal-virtual-0
Adapter: Virtual device
temp1: +70.4°C

root@turris:~# stress -c 2 -t 3m
stress: info: [14365] dispatching hogs: 2 cpu, 0 io, 0 vm, 0 hdd
stress: info: [14365] successful run completed in 180s
root@turris:~# sensors
armada_thermal-virtual-0
Adapter: Virtual device
temp1: +76.1°C


#19

For those dealing with temperature.
NAS box (with installed fan) temperature on idle around 70°C. I.e. the same cooling performance of a NAS box with fan and Omnia in original case with just a passive cooling

Notes:


#20

My design heatsink for board only:

In my board in idle is:

root@turris:~# sensors
armada_thermal-virtual-0
Adapter: Virtual device
temp1: +86.1°C


#21