I have a VPS which has 512 MB of dedicated memory, and up to 1GB burstable.
I recently installed nginx, and I noticed a spike in memory usage. With Apache, it was using around 170MB. With nginx, it's around 350-400MB.
I ran the "top" command via SSH, but nothing returned to be using a high amount of memory. MySQLD appeared to be the only one with the most memory usage, at 3%.
What is causing this?