Hayden James is a Linux Systems Analyst and Internet Entrepreneur from the Caribbean. He relocated to the US ten years ago, where he maintained Linux servers and sold small startups. Today, he supports clients remotely from his island home while also managing a niche web hosting venture. His web blog features Linux Sysadmin related articles: haydenjames.io.
The atop command displays you a more anatomized view of your server's performance.
The top command offers many customization options. Here's one way to take advantage of them in order to check out memory use.