Comment 2 for bug 955776

Hi Anton,

Did you observe MariaDB performance drop or increase along with the CPU usage growth?
If server performance has improved respectively, it might be quite normal -- e.g. it could have happened if you have many connections running at once, and changes in 5.3 reduced the contention between parallel threads.

If it is not the case, could you please provide more information on what is happening on your MariaDB server: how high the load is, in terms of connections, requests etc.; what kind of load it is -- is it read-only mostly, or is there a lot of modification; how much data your database contains; which engines you use; hardware configuration and MariaDB cnf file; and so on. Even better, if you could identify exact queries or sequences of events that cause the increased CPU load. Please also check the slow query log to see if it contains more queries with 5.3 than it used to with 5.2. Any specifics on the problem you are experiencing would be greatly appreciated.

Thank you.