How to reduce youy VPS memory usage

Just a quick tip for anyone having memory problems with your vps.

I had tried many methods of reducing my memory usage, I have over 30 wordpress site hosted on the vps but after trying out many ways to reduce the memory, what I discovered was that after I rebooted my vps my memory usage dropped by 45%.

So all I say is give it a try as it only takes a few minutes and save hours of work!