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Sudden high RAM usage over night

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Greetings.

I woke up today and saw that my unRAID server suddenly has about 86% RAM usage, which is very unusual. I've been using unRAID for almost 1,5 years now and never had this happen, so I was surprised to see this. Usually the RAM usage is about 42%.

So I asked the AI and it told me to execute a "free -h", which displays 16 Gi in the "buff/cache" column. It said everything is fine and it just means that my RAM is used efficiently. But we all know you can't blindly trust AI and I've never had this happen before, so I'm very skeptical.

Would love to know what's actually happening here. Diagnostics attached. Thanks in advance.

nas-diagnostics-20260611-0808.zip

There's a container set to 1GB max RAM that keeps going OOM,

The container ID is:

5e01e8b65d09a6135c5876583f7bcd4f87d7ecbefc76dafde4d591b5b7f56515

That container includes these processes

stash

vips

ffmpeg

Increase the RAM limit to 2 or 4GB to see if that resolves the issue, then reboot to clear the logs and post new diags.

  • Author

The 1GB RAM limitations have been removed and of course after the reboot eveything is back to normal again. But will it stay that way? I think only time will tell.

nas-diagnostics-20260611-1600.zip

3 minutes ago, Vexz said:

The 1GB RAM limitations have been removed and of course after the reboot eveything is back to normal again. But will it stay that way? I think only time will tell.

nas-diagnostics-20260611-1600.zip

If it does it again, run ps -auxf > ps.txt from the command line and that should show you what's using it. Navigate to a folder share first so you can grab the ps.txt that it generates

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