What Is the CPU Usage of a GaussDB(for MySQL) Instance with Empty Load?

A GaussDB(for MySQL) instance has the operating system process, mysqld process, monitoring process, and incremental backup process. The mysqld process contains multiple threads, such as the primary/standby communications thread, connection thread, and refresh thread. The monitoring process monitors the instance status in real time. The incremental backup process backs up incremental data. Even when an instance is unloaded, there are still multiple processes and threads running in the background, resulting in non-zero CPU usage. Typically, the CPU usage ranges from 10% to 15% in such cases.