<Executor 

        name="tomcatThreadPool" 

        namePrefix="catalina-exec-" 

        maxThreads="5000" 

        minSpareThreads="500" 

        maxIdleTime="300000"/>

 <Connector 

        port="8389" 

        protocol="org.apache.coyote.http11.Http11NioProtocol" 

        connectionTimeout="20000" 

        redirectPort="8443"

        minSpareThreads="500"

        maxSpareThreads="1000"

        acceptCount="300"

        executor="tomcatThreadPool" />

http://blog.csdn.net/feng27156/article/details/19420695

注意: