问题
I have noticed that my mysql instance on Amazon's RDS is running quite slow. When I run:
SELECT NOW()
From my local computer, it takes 0.2ms to run. When I run that same query on rds, it takes 35.1ms to run -- even running these multiple times to rule out caching it's about that value.
What are some things I can do or tools I can use to figure out why the rds server is running so slow?
来源：https://stackoverflow.com/questions/32164995/analyzing-slow-mysql-server