thread_pool_oversubscribe

Support CLI: Yes

Support configuration file: Yes

Support dynamic modification: Yes

Scope: global

Parameter type: numeric

Default value: 3

Value range: 1 to 1000

This parameter specifies the number of worker threads in a thread group that can remain active at the same time once the thread group is oversubscribed. When thread_pool_size is set to its default value, this parameter indicates the number of worker threads in a CPU core that can remain active. The default value is 3, which means CPU resources can be fully utilized. Setting the value smaller than 3 leads to more sleeps and wakeups. If the number of active worker threads exceeds the specified value of this parameter, limit the number of active worker threads.