http://blog.csdn.net/u011627980/article/details/54024974
http://www.cnblogs.com/t-road/p/6861882.html
# vim /usr/local/tomcat/bin/catalina.sh --------------------------------------------------- JAVA_OPTS="-Djava.security.egd=file:/dev/./urandom" ---------------------------------------------------
10.29注释：
即使没有在log中显示xxxxxxs，仅访问慢，也可考虑此法，验证成功。
10.30
tomcat启动日志直接阻塞，也是此法