Hi everyone,
I’m facing a frustrating issue with my Home Assistant setup that I haven’t been able to solve. Every hour, like clockwork, my system experiences a massive resource spike that practically renders it useless for a few minutes.
The Symptoms:
Cyclical Spikes: Happens exactly every hour.
Temperature: CPU temp jumps rapidly to around 90°C.
Resource Usage: Huge spikes in CPU and Memory usage.
System Instability: During the spike, I experience complete disconnections from the server. The UI becomes unresponsive, and I lose access for several seconds to a few minutes.
My Hardware/Setup:
Machine: Intel NUC
Memory: 32GB RAM (So hardware overhead shouldn’t be the issue).
Storage: SSD
Installation: [תשלים כאן: HAOS / Proxmox VM / Docker]
What I’ve Checked:
I’ve looked at my automations, and nothing is explicitly scheduled to run at the top of every hour.
Given the 32GB of RAM, I suspect a specific integration or a “zombie process” rather than a simple lack of resources.
The fact that it’s so precisely hourly points toward a scheduled task (like a database purge, backup, or a cloud sync).
My Questions:
Has anyone experienced similar hourly “lock-ups” on high-end hardware like a NUC?
What is the best way to “live monitor” which specific process or Add-on is causing the spike when the UI is frozen? (Should I use SSH/top, or a specific Add-on like Glances?)
Are there any known integrations or Recorder settings that are notorious for hourly CPU-intensive tasks?
I would appreciate any guidance on how to debug this further before the heat causes any long-term damage to my NUC.
Thanks in advance for the help!
Disable your add-ons one at a time and see. If you have a bunch, you can do a couple or several at a time to narrow it down faster.
I wonder would it be faster initially to disable 1/2 the addons and if still getting the spikes 1/2 again. Each time dont get the spikes move to other section until you have narrowed it down to one. If that doesn’t work then try something else
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Custom Integrations are just as likely to cause this, so do the same with them.
Booting is safe mode turns all this off.
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Besides software, did you check the hardware? Is the fan working? Is the CPU correctly mounted, no dried out heat paste?
