Which users eat cpu on Mysql

[Vahric MUHTARYAN]

Hi Everybosy , 
 
            I  red user-resources but I could't find any mysql user cpu
usage limitation, instead of this How can I find out Who is sending too much
query and How much cpu and memory eat ?! You know top showing only mysql
process average but I want to learn inside of this process How can I do ?! 
 
Thanks 
Best Regards 
 
Vahric MUHTARYAN