Server overloaded CPU 100% DISK IO 95

Hello! I have a problem and I don't understand what is happening on my server, the CPU turns red

CPU Usage
100%

and Disk IO in red
95.00

Sometimes some processes of some domains reach all the consumption, but I do not understand why the website in general there are not even 50 people simultaneously on the entire server.

How could you properly limit processes and usage of DISK IO,

I have CWP PRO and hosting plans.

 
PID USER      PR  NI    VIRT    RES    SHR S  %CPU  %MEM     TIME+ COMMAND
  70116 atodocel  20   0  734112 140104  21880 S  33.3   3.7   0:00.52 php-fpm
  70113 atodocel  20   0  807020 142864  27028 R  26.7   3.7   0:01.03 php-fpm
    950 mysql     20   0 1313784 272828  14080 S  20.0   7.1   4:26.88 mysqld
  51978 root      20   0  362836  20188  10604 S  13.3   0.5   0:21.55 php-fpm
  70049 innozona  20   0  737720  71404  23308 D   6.7   1.9   0:00.41 php-fpm

[/img]

Hi Innozona, I also have one of the servers, I still haven't managed to solve the problem, from what I observe, the user "atodocel" traffic you, if you associated this domain with a user and published a site, that's where the problem is, I have a woocommerce with variable products and I think that's where the problem is, but I'm not 100% sure.If you solve the problem please publish the solution, I will do the same if I succeed.
by the way, check the errors that are displayed in your loug for the domain that makes traffic