f7744b72_e__8_0_24____The_AJP_Connector__Description
[Attribute] acceptorThreadCount [Description] 
The number of threads to be used to accept connections. Increase this value on a multi CPU machine, although you would never really need more than 2. Also, with a lot of non keep alive connections, you might want to increase this value as well. Default value is 1.
Apache Tomcat 8 Configuration Reference (8.0.24) - The AJP Connector