Fortigate High Memory

Please follow this document : https://community.fortinet.com/t5/FortiGate/Troubleshooting-Tip-How-to-do-initial-troubleshooting-of-high/ta-p/194874

In addition to the troubleshooting guide shared by @spoojary , I had a recent case where a heavy disk logging was causing a conserve mode situation. Even if conserve mode may have multiple causes, you can still temporarily disable disk logging or at least for the heavy load policies just to see if this is the cause.

Hi
I think what AEK said is reasonable. What is your previous version? Could you share the log of these commands below to check what happened to your firewall?

diag hardware sysinfo memory
diag hardware sysinfo slab
get sys perf status
diag sys session stat
diag sys top 2 10 3
diagnose sys top-mem 50
fnsysctl df -k
fnsysctl du -i /tmp
fnsysctl du -a /tmp
fnsysctl du -a / -d 1
fnsysctl cat /proc/mounts
fnsysctl date
diag sys last-modified-files /
diag sys last-modified-files /var/log
diag sys last-modified-files /data
diag sys last-modified-files /data2
diag hardware deviceinfo disk
exec disk list
diag sys last-modified-files
fnsysctl du /node-scripts
fnsysctl cat /proc/vmstat
fnsysctl du -a /node-scripts
fnsysctl ls -la /node-scripts/report-runner/results
fnsysctl ls /var/log/log/root -l

In case you want to share private through Fortinet email, please share to this "bhoang@fortinet.com"
We are here to support you.
Bill

I followed the document provided but nothing changed. I had version 7.0.13 before. The average ram usage did not go above 56%. However, after version 7.0.14, ram usage is at the lowest level of 68. In any antivirus or ips update, the device enters conserve mode due to increased ram usage. I turned off disk reporting but ram usage did not change.