f7744b72_e__8_0_24____The_AJP_Connector__Description
[Attribute] maxThreads [Description] 
The maximum number of request processing threads to be created by this Connector, which therefore determines the maximum number of simultaneous requests that can be handled. If not specified, this attribute is set to 200. If an executor is associated with this connector, this attribute is ignored as the connector will execute tasks using the executor rather than an internal thread pool.
Apache Tomcat 8 Configuration Reference (8.0.24) - The AJP Connector