I would like to limit resources available to a given user in mysql. I know that there is https://dev.mysql.com/doc/refman/5.5/en/user-resources.html, I also know that cgroups can be used at operating system level. 

What are your experiences in limiting resources in mysql? I've used percona statistics and had information provided by it. Are there any better solutions?

Best regards,

Rafal Radecki.