thread_pool_toobusy

Support CLI: Yes

Support configuration file: Yes

Support dynamic modification: Yes

Scope: global

Parameter type: numeric

Default value: 13

Value range: 1 to 1000

This parameter specifies the threshold number of worker threads for determining whether a thread group is busy. If (Number of active worker threads in a thread group + Number of worker threads in lock or I/O waiting) > (thread_pool_toobusy + 1), the thread group is busy and does not handle low-priority tasks until the thread group returns to a non-busy state. Instead, the thread group waits for the ongoing tasks and high-priority tasks to be handled.