Our MySQL server has been using a lot of CPU lately (it's reached 100% several times and stays there for a while) and I noticed that it the CPU load is all on one core of one cpu. I was hoping to spread that out to all 4 on my server.
I have been tweaking the MySQL settings to use more ram and less cpu, but it still occasionally reaches very high CPU usage.
It seems like everything about the topic refers to thread_concurrency (which I've read is a solaris only setting). What can I do in Linux?
Thanks.
Best Answer
You are right, thread_concurrency is only for Solaris and it is deprecated in MySQL 5.6 onward. I don't think you can use multi cores/cpus with MyISAM. To fully utilize the hardware, use InnoDB.
This might help you to understand things better.