Recently I started using a VPS, with 16.06 64bit ubuntu, and I configured apache, mysql, php, and a node environment on port 3000, with apache redirect with proxy reverse.
Anyway, everything works fine.
My problem started because the server started to slow, I checked for memory and processor usage and everything is normal, less than 50%
but when I give a sudo service apache2 restart , everything goes back to very fast, and goes back to slow after some requests, around a minute at most.
I tried to add this to my apache2.conf without success.
AcceptFilter http none
AcceptFilter https none
If anyone has any idea of what can be, I believe some configuration, but I do not have this knowledge.