I have only “mpm_prefork_module”
I put to 10 and now I’ll see next 24 hours. (no visits into website, apart me and bots)
maybe I have to change to event or workers?
https://www.woktron.com/secure/knowledgebase/133/How-to-optimize-Apache-performance.html
edit:
I edited with: https://askubuntu.com/questions/453377/how-to-enable-event-mpm-apache-2-4-on-ubuntu-14-04-with-thread-safe-php
and now I have event instead prefork.
seems to go better, I have few processes and less memory “cached”. Maybe I’ll try to re-enable other website with traffic