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Question High CPU usage of mariadbd for long periods of time

mapodec

mapodec

New Pleskian
Server operating system version
Debian 10.13
Plesk version and microupdate number
18.0.57 #5
I have a problem with the server and a web page.
Since several hours ago, Monitoring360 is detecting that mariadb is using a lot of CPU, being constantly my CPU at 80% according to Monitoring360 (I have an open alert that does not end up closing).

But from Plesk, if I go to Process List, the CPU percentage is 18-20%.

There is a mariadb process that does not finish. In MySQL Process List (Beta) it says that there are several tasks with the status of "Sending data" from a database of a web page.

Does anyone know what is happening and how can I fix it? Attached are several images.
The server I have has good resources (16 vCores and 16 GB RAM).

Thank you very much.
 

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