apr 与 tomcat-native 提供更好的伸缩性、性能和集成到本地服务器技术

apr 与 tomcat-native 提供更好的伸缩性、性能和集成到本地服务器技术。

如果没有apr技术，启动tomcat 时出现如下提示：

信息: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: /usr/java/jdk1.6.0_06/jre/lib/i386/client:/usr/java/jdk1.6.0_06/jre/lib/i386:/usr/java/jdk1.6.0_06/jre/../lib/i386:/usr/java/packages/lib/i386:/lib:/usr/lib

信息: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: /usr/java/jdk1.6.0_06/jre/lib/i386/client:/usr/java/jdk1.6.0_06/jre/lib/i386:/usr/java/jdk1.6.0_06/jre/../lib/i386:/usr/java/packages/lib/i386:/lib:/usr/lib

按照官方说明需要：

• APR library
• OpenSSL libraries

openssl 可以用 yum install openssl-devel，apr还是下载*.gz来安装。
apr-1.3.2.tar.gz
apr-util-1.3.2.tar.gz
两个可以在 http://apache.mirror.phpchina.com/apr/ 找到。
tomcat-native.tar.gz 可以在tomcat/bin目录下找到。

安装 apr

# wget http://apache.mirror.phpchina.com/apr/apr-1.3.2.tar.gz
# tar zxvf apr-1.3.2.tar.gz
# cd apr-1.3.2
# ./configure
# make
# make install

# wget http://apache.mirror.phpchina.com/apr/apr-1.3.2.tar.gz
# tar zxvf apr-1.3.2.tar.gz
# cd apr-1.3.2
# ./configure
# make
# make install

apr 默认安装在 /usr/local/apr

安装 apr-util

# wget http://apache.mirror.phpchina.com/apr/apr-util-1.3.2.tar.gz
# tar zxvf apr-util-1.3.2.tar.gz
# cd apr-util-1.3.2
# ./configure --with-apr=/usr/local/apr
# make
# make install

# wget http://apache.mirror.phpchina.com/apr/apr-util-1.3.2.tar.gz
# tar zxvf apr-util-1.3.2.tar.gz
# cd apr-util-1.3.2
# ./configure --with-apr=/usr/local/apr
# make
# make install

安装 tomcat-native

# cd /usr/local/tomcat-6.0.18/bin
# tar zxvf tomcat-native.tar.gz
# cd tomcat-native-1.1.14-src/jni/native
# ./configure --with-apr=/usr/local/apr --with-java-home=/usr/java/jdk1.6.0_11
# make
# make install

# cd /usr/local/tomcat-6.0.18/bin
# tar zxvf tomcat-native.tar.gz
# cd tomcat-native-1.1.14-src/jni/native
# ./configure --with-apr=/usr/local/apr --with-java-home=/usr/java/jdk1.6.0_11
# make
# make install

设置 apr 的环境变量：

# vi /etc/profile
// 后面添加以下内容
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/apr/lib
//使profile生效，
# source /etc/profile

# vi /etc/profile
// 后面添加以下内容
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/apr/lib
//使profile生效，
# source /etc/profile

启动 tomcat 后， 看日志：

# bin/startup.sh
# head logs/catalina.out

// 可以看到以下结果：
信息: Loaded APR based Apache Tomcat Native library 1.1.14.
2009-1-13 11:12:51 org.apache.catalina.core.AprLifecycleListener init
信息: APR capabilities: IPv6 [true], sendfile [true], accept filters [false], random [true].

# bin/startup.sh
# head logs/catalina.out

// 可以看到以下结果：
信息: Loaded APR based Apache Tomcat Native library 1.1.14.
2009-1-13 11:12:51 org.apache.catalina.core.AprLifecycleListener init
信息: APR capabilities: IPv6 [true], sendfile [true], accept filters [false], random [true].

好了， 可以运行了，但没有测试其性能提交多少。