I'm wondering at what stage do I need to increase the image for the RDS MySQL server to a larger CPU/RAM instance.
The CPU utilization graph is near 0. The Avg Free Memory is around 150MB. The Avg Swap Usage is 420MB.
Read Latency is 0-20ms/op it spikes up randomly. Avg write latency is on average 5ms/op but spikes up to 10-20ms/op.
Are there some common rules here that I should follow?