Bandwidth monitoring - usage by process
I recently installed vnstat on my Droplet. After about a month I decided to checkout the log, and to my surprise saw huge amounts of bandwidth going in and out of the server (pretty much 50-100MB a day! Which is A LOT for this Droplet as it hosts just a single static page through nginx).
I was wondering if someone knows a tool I can run for a day (much like vnstat), but which logs usage per process, so I can find what is causing it. I checked my nginx logs and it has barely any sent bytes, so it has to be something else...