I have several dedicated server and VPS, normally I have 40% free RAM for my websites running on a server. Is that good and acceptable for number of percentage free RAM on a server? According to you, how much free memory should I have on my server? and why?
It all depends on how much traffic you are expected and also based on any fluctauting resource usage at on and off peak hours of your servers.
Yes, it sounds good to see 40% of free memory available at normal or off peak hours.
But the cases will differ according to the website traffic, on peak hours with unexpected /heavy incoming traffic, the server should require more resource than normal.
- In that situations the server cannot process more request if the system is in shortage of hardware resources like memory , CPU as well.
- There should be a through audit done for the servers or a trail 'n' error sessions should be done for any websites /code expecting high traffic, for any resource usage , do an optimize with the code, in order to test the resource usage before running the server into the production.
