Since a few days my server response is very slow, when i access my web app from browser but also when i use command line there is lag and delay to write commands. What could be the problem ?
I tried upgrade from a 1G / 1CPU to 4G / 2CPU hoping it would solve it but its same. basically i run 3 instances of a nodejs webapp, use pm2 and nginx, nothing special, 26G free disk space.
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