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Signed up to the forum to report exactly the same issue. The box appears stable until I login, then memory consumption quickly climbs to 100% and the UI becomes unresponsive. I've tried disabling host / neighbourhood discovery but this makes zero difference.
Update 1:
I've now identified the problem process:
USER PID %CPU %MEM VSZ RSS TT STAT STARTED TIME COMMAND
root 51727 0.1 58.8 11386908 2316112 - Ss 17:35 1:52.31 /usr/local/bin/suricata -D --netmap --pidfile /var/run/suricata.pid -c /usr/local/etc/suricata/suricata.yaml
After identifying this, I disabled intrusion detection and now everything is back to normal.
Update 2:
Re-enabling IDS (and IPS) immediately causes the issue again. However, I'm now wondering if new rules/changes may have increased memory usage; perhaps using the web UI is adding to this demand/exhaustion. Either way, disabling IDS has solved my immediate problem.
OPNsense 25.7.11_2, 4GB RAM, i5-4570.
Update 1:
I've now identified the problem process:
USER PID %CPU %MEM VSZ RSS TT STAT STARTED TIME COMMAND
root 51727 0.1 58.8 11386908 2316112 - Ss 17:35 1:52.31 /usr/local/bin/suricata -D --netmap --pidfile /var/run/suricata.pid -c /usr/local/etc/suricata/suricata.yaml
After identifying this, I disabled intrusion detection and now everything is back to normal.
Update 2:
Re-enabling IDS (and IPS) immediately causes the issue again. However, I'm now wondering if new rules/changes may have increased memory usage; perhaps using the web UI is adding to this demand/exhaustion. Either way, disabling IDS has solved my immediate problem.
OPNsense 25.7.11_2, 4GB RAM, i5-4570.
