Apache Tomcat 7 Configuration Reference (7.0.93) - The Executor (thread pool)
https://tomcat.apache.org/tomcat-7.0-doc/config/executor.html

Tomat组件研究之ThreadPool - 老码农的专栏 - CSDN博客
https://blog.csdn.net/chen77716/article/details/344764

Tomcat中的线程池（APR和ThreadPool） - 宏轩ＪＡＶＡ技术专栏 - CSDN博客
https://blog.csdn.net/fhx007/article/details/15217595

Apache Tomcat 7 Configuration Reference (7.0.93) - The Executor (thread pool)
https://tomcat.apache.org/tomcat-7.0-doc/config/executor.html#Common_Attributes

ThreadPool (Tomcat API Documentation)
https://tomcat.apache.org/tomcat-5.5-doc/catalina/docs/api/org/apache/tomcat/util/threads/ThreadPool.html

Tomat组件研究之ThreadPool - 老码农的专栏 - CSDN博客
https://blog.csdn.net/chen77716/article/details/344764

tomcat bio nio apr 模式性能测试与个人看法 - wanglei_storage的博客 - CSDN博客
https://blog.csdn.net/wanglei_storage/article/details/50225779

tomcat bio nio apr 模式性能测试 - raindream - 博客园
http://www.cnblogs.com/drizzlewithwind/p/6072029.html