Memory usage increasing over time.

[driftwood]

When I start my server and it's been running for an hour or so it's using;

Memory RAM (with Cache): 2.58GB / 32GB
Memory RAM (NO Cache): 1.49GB / 32GB
Number of processes: 234

After 20 days it's using 27gbs of ram and over 350 processes are using. This seems a gradual increase as I've watch it creep up day by day. Question is;

Should I be concerned and if so how can I find the problem and solve it.

CentOS release 6.8 (Final)
Apache version: Apache/2.2.27
PHP version: 7.1.0-dev
MySQL version: M
FTP version: 1.0.36
CWP version: 0.9.8.36
I don't run av or spamass because I don't use the email server. I also shutdown ftp when not in use.

[Sandeep]

simply drop the cache (openvz will not applicable here)

[Administrator]

if this memory is in the cache then you can ignore it as cache speed ups you server, if its something else they you would need to check it.