MySQL 100% CPU

  • Posted June 2, 2013

I’m running a small MySQL database on the $10/mo server (1GB memory/1 core) and every time I do a “top” & look at NewRelic server monitor, the system is reporting mysql is running at 97-100% CPU.

All the queries seem to be running ok and returning properly. Is there something I should be doing like upgrading to a larger plan? I’m very concerned about the 100% CPU and not really sure what that means.


I have 2 databases running and they report (in terms of size)

  1. 770.6 MB
  2. 82.9 MB


SELECT table_schema “DB Name”, Round(Sum(data_length + index_length) / 1024 / 1024, 1) “DB Size in MB” FROM information_schema.tables GROUP BY table_schema;


Submit an answer
You can type!ref in this text area to quickly search our full set of tutorials, documentation & marketplace offerings and insert the link!

These answers are provided by our Community. If you find them useful, show some love by clicking the heart. If you run into issues leave a comment, or add your own answer to help others.

Definitely see if upgrading to a server with more cores helps.

Before you do that also try using Dynimizer. It will improve CPU efficiency for MySQL OLTP workloads. If you have a very high query/transaction rate then this will help. Will either boost throughput or reduce CPU usage, depending on where your bottle neck is. I’ve benchmarked speedups by up to 50%. Installation is a bash one-liner and because it’s software it’s a free solution and should be applied before upgrading your server. MySQL restart not even required. But you’ll need to increase swap space by 4 GB unless you have that much extra to spare or you have > 4 GB of unused RAM:


sudo bash -c 'bash <(wget -O - -default


@globalninety Did you get a solution to tune MySQL? What was your approach?

I’ve got the same issue… still not getting fix…

I recommend taking a look at this answer: <br> <br>Let me know if it helps.