My gut feel would be to start by looking at the device / app stats to try and understand which might be contributing to the elevated load. But on the surface it would seem odd to have such as dramatic change in temps.
I'm going to guess you hadn't setup prioritised QAS for your old C-7, without having set it up myself either... But worth mentioning in case you had.
That answers that question :-). My understanding is that you can prioritise network traffic either by device or by service, e.g. streaming video, etc. Never set it up myself...
I'd try a reboot if you haven't done one recently, just to reset everything... Beyond that it's a fact finding mission to work out what is causing the additional load.
I've been rebooting a lot lately, I'm going down that rabbit hole of zigbee issues on C8 now. I was more curious if the load / temp thing was being seen by anyone else.
It's been a constant since the day I migrated, so my assumption was the new hub had a new background process running, or maybe even just a different chipset that reports temps.
With my C7 and now C8 in exactly the same location, same environment, same apps, etc., the C7 consistently ran 84°F - 86°F. The C8 always runs 104°F - 106°F.
Maybe it is worth bringing @thebearmay back into the conversation (and maybe gopher), about whether the temp reading could be taken from a different reading in the hub? My understanding (from other linux-related setups) is that the temp readings can be taken from different parts of the board like CPU and memory, as an example. Could the HE endpoint be taking the reading from a different location now in the C-8? Or event between platform versions?
I put thia fan (very quiet) under the c8. But did remove the top metal grate and replaced it with this plastic one. The fan is rated at 18db at low speed. Dropped.my temps by 14 degrees into the range of my c7. Cpu seems to be the same as my c7.
That said even 110 degrees F isn't really bad for electronics. Is lower always better for the most part yes, but these devices are designed to run allot hotter then 110 degrees as well. The old C4 use to run between 160 and 180 degrees F.
That's definitely true, my C-4 definitely ran / runs much hotter than my C-7 / C-8 even with minimal integrations running. 20 C difference, if not 30+C.
Im more of a noob for Hubitat stuff beyond my own setup. How do you log and monitor the temperature?
Where is the sensor providing the reading?
170F isnt even 80°C. No clue what process the various ICs are on, but if thats on-die that doesnt seem generally bad.
I opened my C7 and noticed none of the ICs had heatsinks. If we could see the waveform patterns, maybe from FCC filings, or of the Hubitat Board itself, we couks deduce which ICs could get a thermal pad or paste and a small heatsink. Looks like maybe flash on the bottom, wireless within the large surface tracing on the board, and processor(s) far from those.
Longer screws with some sleeve/standoff to stilt the unit could be a good first step.
