Hi, We run a single website (wordpress based) on a Xen VPS server with 1GB RAM. The website gets around 8k - 9k visitors per day and 30k+ page views.
The server is running on nginx, memcached, ngx_pagespeed.
We are thinking to downgrade to a 512MB OVZ or KVM VPS to minimize the cost. Avg. memory consumption stays like this always (check image below).
Image may be NSFW.
Clik here to view.
Your suggestion will be appreciated. Sorry for noob questions, I am new to VPS world