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Unifi device tracker causes strange system behaviour #8219

Closed bsqrl closed 7 years ago

bsqrl commented 7 years ago

OS and other stuff: I am running home assisstant on a Debian 8 based system in a virtual environment. The unifi controller software that is used is the lastest available version (I tested older versions and ran into same problems).

Home Assistant release (hass --version): 0.47.1

Python release (python3 --version): 3.5.3

Component/platform: Unifi device tracker

Description of problem: If I use the unifi device tracker, the whole system gets in a weird state after a while (~10 minutes): The machine gets stuck, takes 100% CPU on one core and doesn't respond anymore.

Expected: Don't make the whole machine stuck.

Problem-relevant configuration.yaml entries and steps to reproduce:

- platform: unifi                                                     
  host: xxxxxx                                          
  username: xxxxxxx                                             
  password: xxxxxxx                                           
  verify_ssl: false                                                   
  track_new_devices: false

Commenting out the corresponding part of the config, home assistant and the whole system works fine for hours.

Traceback (if applicable):

Additional info: I don't have any useful additional info. If one needs specific information I surely do my best to provide it.

xelprep commented 7 years ago

I had a similar issue where the VM (Debian 9 running in ESXi 6.5) would freeze at 100% CPU and had to be reset. What linux kernel are you running? I was able to capture the start of the kernel BUG log output so with that, combined with what I read here, I changed my NIC from VMXNET3 to E1000e and the issue went away. Sorry if this isn't the same issue as yours, but maybe it'll help.

bsqrl commented 7 years ago

I am using the most recent kernel from the Debian repository: SMP Debian 4.9.30-2+deb9u1

I'll take a look at the NIC settings as soon as I have access to the machine and eventually change them (if necessary).

bsqrl commented 7 years ago

Now I had the chance to test the suggested workaround. I can say that it works for me. Strange behaviour but it seems not be a Home Assistant problem. So this issue can be closed.

Tank you very much.