Homebridge fails to start

[korgoth]

I have been using this plugin for about 2 weeks and so far it was working fine.

Today i had to make some tweaks to my RPi (disable wifi and bluetooth) and when i rebooted the RPi - homebridge was not starting anymore. I believe that this plugin is causing the problem since when i disable it - everything works ok. I have tried to revert my change (ie turn wifi and bluetooth back on and reboot the server) - but i homebridge still fails to start when i have anything configured with network presence.

Here is what i see in the log right before it fails:

[12/02/2021, 16:07:27] [Plex Webhooks Platform] Initializing PlexWebhooks platform...
[12/02/2021, 16:07:27] [NetworkPresence] Initializing NetworkPresence platform...
[12/02/2021, 16:07:27] Loading 11 accessories...
[12/02/2021, 16:07:27] [Heater] Initializing broadlinkSP accessory...
[12/02/2021, 16:07:27] [Vacuum] Initializing XiaomiRoborockVacuum accessory...
HAP Warning: Characteristic 000000AC-0000-1000-8000-0026BB765291 not in required or optional characteristics for service 00000040-0000-1000-8000-0026BB765291. Adding anyway.
HAP Warning: Characteristic 000000AB-0000-1000-8000-0026BB765291 not in required or optional characteristics for service 00000040-0000-1000-8000-0026BB765291. Adding anyway.
[12/02/2021, 16:07:27] [Main Light BR] Initializing mqttthing accessory...
[12/02/2021, 16:07:27] [Left light LR] Initializing mqttthing accessory...
[12/02/2021, 16:07:27] [Right Light LR] Initializing mqttthing accessory...
[12/02/2021, 16:07:27] [LR Temp] Initializing mqttthing accessory...
[12/02/2021, 16:07:27] [Bath Light] Initializing mqttthing accessory...
[12/02/2021, 16:07:27] [Bath Fan] Initializing mqttthing accessory...
[12/02/2021, 16:07:27] [Bath Temp] Initializing mqttthing accessory...
[12/02/2021, 16:07:27] [Btn] Initializing mqttthing accessory...
[12/02/2021, 16:07:27] [Guests at home] Initializing DummySwitch accessory...
[12/02/2021, 16:07:27] [Guests at home] Setting switch to false
[12/02/2021, 16:07:27] [homebridge-magichome-dynamic-platform] 1 - Loading accessory from cache... Mood Up
[12/02/2021, 16:07:27] [homebridge-magichome-dynamic-platform] 2 - Loading accessory from cache... Mood Down
[12/02/2021, 16:07:27] [homebridge-magichome-dynamic-platform] 3 - Loading accessory from cache... Bedside
[12/02/2021, 16:07:27] [homebridge-magichome-dynamic-platform] 4 - Loading accessory from cache... Kitchen
[12/02/2021, 16:07:27] [BraviaPlatform] Restoring Livingroom TV from HomeKit
[12/02/2021, 16:07:27] [homebridge-magichome-dynamic-platform] Executed didFinishLaunching callback
[12/02/2021, 16:07:27] [Plex Webhooks Platform] Found 2 accessories in config:
[12/02/2021, 16:07:27] [Plex Webhooks Platform] • Plex Bedroom
[12/02/2021, 16:07:27] [Plex Webhooks Platform] • Plex Livingroom
[12/02/2021, 16:07:28] [Plex Webhooks Platform] Updating accessory [Plex Bedroom] (7d19f28e-63d3-49be-a5a1-afccf0bd7957)
[12/02/2021, 16:07:28] [Plex Webhooks Platform] Updating accessory [Plex Livingroom] (229389f6-f437-4962-ac78-8df444a3f08e)
[12/02/2021, 16:07:28] [NetworkPresence] Initiating Network Scanner...

<--- Last few GCs --->

[755:0x4fc2a38]    34820 ms: Mark-sweep (reduce) 230.3 (233.2) -> 229.9 (233.2) MB, 975.5 / 0.1 ms  (+ 0.5 ms in 159 steps since start of marking, biggest step 0.0 ms, walltime since start of marking 1257 ms) (average mu = 0.284, current mu = 0.282) alloc[755:0x4fc2a38]    36525 ms: Mark-sweep (reduce) 230.4 (231.7) -> 230.0 (232.5) MB, 1701.5 / 0.1 ms  (average mu = 0.163, current mu = 0.002) allocation failure scavenge might not succeed

<--- JS stacktrace --->

FATAL ERROR: Ineffective mark-compacts near heap limit Allocation failed - JavaScript heap out of memory
[12/02/2021, 16:07:58] [HB Supervisor] Homebridge Process Ended. Code: null, Signal: SIGABRT
[12/02/2021, 16:08:03] [HB Supervisor] Restarting Homebridge...

And this goes on in an endless loop. I only had 1 accessory configured + the "Anyone" sensor.

I just can't figure out what might be the cause of that. Does anyone has any idea how to debug any further as from the log i am not getting any useful information so far

[korgoth]

This is the Network presence part of my config - if it helps:

{
    "debug": true,
    "interval": 60,
    "threshold": 15,
    "anyoneSensor": false,
    "devices": [
        {
            "name": "iPhone",
            "ip": "xxx.xxx.xxx.xxx",
            "threshold": 15
        }
    ],
    "platform": "NetworkPresence"
}

[nitaybz]

what raspberry pi are you using?

[korgoth]

Raspberry PI 3B+

Whats - i have added this to /boot/config.txt to disable wifi and bt:

[all] dtoverlay=disable-wifi dtoverlay=disable-bt

But even if i remove it - the behavior is still the same

[nitaybz]

I'm using the exact same device with many other plugins and I haven't experienced it... if you remove this plugin it works well? maybe you installed any new plugin that takes all your memory?

[korgoth]

Strange thing is it was working just fine until i rebooted the RPi.

I still have about 500MB of free memory.

Whats even more odd is that i currently have the plugin installed - just no devices setup - and the Homebridge process is starting and its working. If i add a device - then it hangs. If i remove the device - it starts up again. I have tried with various devices (phones, routers, computers) - every time the same result. :-/

[nitaybz]

node version?

[nitaybz]

homebridge version?

[korgoth]

HB: 1.2.5 Node: 14.15.3

Plugin versions tried: 1.2.3, 1.2.1, 1.2.0

[nitaybz]

can you try and change the homebridge version to 1.1.7?

[korgoth]

I just did - same error

[korgoth]

After todays HB update to 1.3 i set the Network presence plugin to run as a separate process (a child bridge). And the result is the same:

[20/02/2021, 11:52:13] [homebridge-network-presence] Child bridge process ended
[20/02/2021, 11:52:13] [homebridge-network-presence] Process Ended. Code: null, Signal: SIGABRT
[20/02/2021, 11:52:20] [homebridge-network-presence] Restarting Process...
Initializing HAP-NodeJS v0.9.1...
[20/02/2021, 11:52:22] [homebridge-network-presence] Launched external bridge with PID 25884
[20/02/2021, 11:52:23] Registering platform 'homebridge-network-presence.NetworkPresence'
[20/02/2021, 11:52:23] [homebridge-network-presence] Loaded homebridge-network-presence v1.2.3 successfully
Preparing Advertiser for 'homebridge-network-presence 019B' using ciao backend!
[20/02/2021, 11:52:23] [homebridge-network-presence] Initiating Network Scanner...

<--- Last few GCs --->

[25884:0x52bba00]    27183 ms: Scavenge 224.7 (227.8) -> 223.6 (228.3) MB, 27.0 / 0.0 ms  (average mu = 0.351, current mu = 0.224) allocation failure 
[25884:0x52bba00]    27226 ms: Scavenge 225.2 (228.3) -> 224.2 (228.8) MB, 31.9 / 0.0 ms  (average mu = 0.351, current mu = 0.224) allocation failure 
[25884:0x52bba00]    27276 ms: Scavenge 225.6 (228.8) -> 224.7 (229.3) MB, 39.4 / 0.0 ms  (average mu = 0.351, current mu = 0.224) allocation failure 

<--- JS stacktrace --->

FATAL ERROR: MarkCompactCollector: young object promotion failed Allocation failed - JavaScript heap out of memory
[20/02/2021, 11:52:51] [homebridge-network-presence] Child bridge process ended

[korgoth]

After more testing it seems that network presence is somehow conflicting with MagicHome Dynamic platform plugin. (guess they since they are both scanning the network for devices something times out. I removed the MagicHome Dynamic platform plugin and replaced it with the more simple Homebridge Magichome Platform (https://github.com/sahilchaddha/homebridge-magichome-platform) - where all magic home devices are required to have static IP addresses described in the config. Now everything seems to work correctly.