
RAM usage is very high
My server is running on CentOS 7, and the RAM usage is always maxed out. I had 1 GB, and it was maxed, now I upgraded to 2 GB and it is maxed out.
I am not sure what services need most RAM
There is one systemd-journal, uses a lot of ram, and several instances of apache
Is there anything I could do - some settings, to optimize and maybe lower RAM usage?
Answer

You're looking in the wrong place for solving this. FileRun's framework uses ~ 20 MB or less to run and does so only for milliseconds, when a user is accessing FileRun. If you have continuous high memory usage on your system, you should check the running software that is actually using the memory. If it's PHP, you should investigate the conditions the PHP processes get to that usage, in connection with which HTTP requests.
If you still believe is FileRun related, feel free to post more details that indicate that and we'll help you troubleshoot.
Customer support service by UserEcho
You're looking in the wrong place for solving this. FileRun's framework uses ~ 20 MB or less to run and does so only for milliseconds, when a user is accessing FileRun. If you have continuous high memory usage on your system, you should check the running software that is actually using the memory. If it's PHP, you should investigate the conditions the PHP processes get to that usage, in connection with which HTTP requests.
If you still believe is FileRun related, feel free to post more details that indicate that and we'll help you troubleshoot.