High memory usage of dedicated server

Server Config
1

Hello,

My dedicated server is using a lot of memory as show below. What should I do to troubleshoot this issue?

Is it normal? I don’t know. The server has 90 low traffic websites .

root@ds [~]# free -m
             total       used       free     shared    buffers     cached
Mem:         4054       3912        142          0        569       2550
-/+ buffers/cache:        791       3262
Swap:         2047          0       2047

OOzy

2

Its not using THAT much really, the 2.5GB of ‘cached’ usage is, yes, in use, but also available for actual use if needs be. In reality you are only using 1.8GB or so of RAM there.

3

Are you having performance problems with your server?
If not let the system use the RAM, that is why it is there.

Using less RAM does not improve performance.