OPNsense Forum

English Forums => 25.7, 25.10 Series => Topic started by: wide on January 17, 2026, 04:17:57 PM

Title: After updating Opnsense from 25.7.10 to 25.7.11_1 opening WebGUI eats all memory
Post by: wide on January 17, 2026, 04:17:57 PM
I've updated from 25.7.10 to 25.7.11_1 yesterday. It's now impossible to access WebGUI because after the login screen when dashboard starts loading the UI spawns hundreds of PHP processes which causes system load to raise above 100 and after few minutes sytem runs out of memory and also consumes all the allocated swap space finally killing the network traffic completely.

System recovers from the situation after closing the WebGUI browser tab but it might take 30-60 minutes when all the PHP processes are finished and memory consumption and system load returns back to normal values.
Title: Re: After updating Opnsense from 25.7.10 to 25.7.11_1 opening WebGUI eats all memory
Post by: Patrick M. Hausen on January 17, 2026, 05:56:14 PM
Spin up the system isolated and only your desktop/laptop connected to LAN. No WAN, no switch, no other devices.

System working? No problems? Also no Internet, of course.

If yes, go to Interfaces: Neighbors: Automatic Discovery and disable that. Then reconnect.

HTH,
Patrick
Title: Re: After updating Opnsense from 25.7.10 to 25.7.11_1 opening WebGUI eats all memory
Post by: wide on January 18, 2026, 01:10:36 PM
Hi,

System is fully functional and stable after reboot if I don't open the WebGUI. So clean start and staying away from management keeps the load and memory consumption in similar levels what were before the 25.7.11_1 update. Is it sure that my case is connected to this Neighbors: Automatic Discovery feature?
Title: Re: After updating Opnsense from 25.7.10 to 25.7.11_1 opening WebGUI eats all memory
Post by: stanthewizzard on January 18, 2026, 02:55:07 PM
Wrong post
Title: Re: After updating Opnsense from 25.7.10 to 25.7.11_1 opening WebGUI eats all memory
Post by: Patrick M. Hausen on January 18, 2026, 03:47:01 PM
Quote from: wide on Today at 01:10:36 PMIs it sure that my case is connected to this Neighbors: Automatic Discovery feature?

No but this is the single change in the latest release which seems to impact folks negatively the most. Including filling disks, 100% CPU load, ... so I would not be surprised if it would also spawn a lot of processes.