Tomcat Native 这个项目可以让 Tomcat 使用 Apache 的 apr 包来处理包括文件和网络IO操作，以提升性能。Tomcat Native 是利用 APR 来提升Tomcat性能的本地API。


 软件下载地址：http://tomcat.apache.org/download-native.cgi

 或者在二进制版本包内的bin目录下软件相关的包。建议使用比较新一些的版本，有一个版本有bug，网上搜索一下就知道。


 安装环境需求：

Development Tools    需要安装这个组的包

      apr apr-devel

      openssl相关包  


安装过程：


查询是否安装Development Tool

[root@zonghe ~]# yum grouplist
Loaded plugins: fastestmirror
Setting up Group Process
Loading mirror speeds from cached hostfile
addons                                                                                      
Installed Groups:
   Development Libraries
   Development Tools    需要安装这个组的包
   Dialup Networking Support


查看安装那些apr包

[root@zonghe ~]# rpm -qa|grep apr
apr-1.2.7-11.el5_6.5
apr-1.2.7-11.el5_6.5
apr-util-1.2.7-11.el5_5.2
apr-util-1.2.7-11.el5_5.2


查看安装那些openssl包

[root@zonghe ~]# rpm -qa|grep openssl
openssl-0.9.8e-20.el5
openssl-devel-0.9.8e-20.el5
openssl-devel-0.9.8e-20.el5
openssl-0.9.8e-20.el5


   经查看发现少了apr-devel包，直接yum安装  

[root@zonghe ~]# yum install apr-devel
Loaded plugins: fastestmirror
Existing lock /var/run/yum.pid: another copy is running as pid 28125.
Another app is currently holding the yum lock; waiting for it to exit...
  The other application is: yum
    Memory :  19 M RSS (236 MB VSZ)
    Started: Thu Jun 27 00:46:45 2013 - 00:41 ago
    State  : Sleeping, pid: 28125
Loading mirror speeds from cached hostfile
Setting up Install Process
Resolving Dependencies
--> Running transaction check
---> Package apr-devel.i386 0:1.2.7-11.el5_6.5 set to be updated
---> Package apr-devel.x86_64 0:1.2.7-11.el5_6.5 set to be updated
--> Finished Dependency Resolution
Dependencies Resolved
=====================================================================================================================
 Package                    Arch                    Version                              Repository             Size
=====================================================================================================================
Installing:
 apr-devel                  i386                    1.2.7-11.el5_6.5                     base                  233 k
 apr-devel                  x86_64                  1.2.7-11.el5_6.5                     base                  238 k
Transaction Summary
=====================================================================================================================
Install       2 Package(s)
Upgrade       0 Package(s)
Total download size: 471 k
Is this ok [y/N]: y
Downloading Packages:
(1/2): apr-devel-1.2.7-11.el5_6.5.i386.rpm                                                    | 233 kB     00:00   
(2/2): apr-devel-1.2.7-11.el5_6.5.x86_64.rpm                                                  | 238 kB     00:00   
---------------------------------------------------------------------------------------------------------------------
Total                                                                                 12 kB/s | 471 kB     00:40   
Running rpm_check_debug
Running Transaction Test
Finished Transaction Test
Transaction Test Succeeded
Running Transaction
  Installing     : apr-devel                                                                                     1/2
  Installing     : apr-devel                                                                                     2/2
Installed:
  apr-devel.i386 0:1.2.7-11.el5_6.5                        apr-devel.x86_64 0:1.2.7-11.el5_6.5                     
Complete!


    安装native  （我使用的是tomcat二进制包bin目录下的包）

[root@zonghe bin]# pwd
/usr/local/tomcat6/bin
[root@zonghe bin]# ls
bootstrap.jar       commons-daemon-native.tar.gz  setclasspath.sh  tomcat-juli.jar       version.sh
catalina.bat        cpappend.bat                  shutdown.bat     tomcat-native.tar.gz
catalina.sh         digest.bat                    shutdown.sh      tool-wrapper.bat
catalina-tasks.xml  digest.sh                     startup.bat      tool-wrapper.sh
commons-daemon.jar  setclasspath.bat              startup.sh       version.bat
[root@zonghe bin]# tar zxf tomcat-native.tar.gz
[root@zonghe bin]# ls
bootstrap.jar       commons-daemon-native.tar.gz  setclasspath.sh  tomcat-juli.jar           version.bat
catalina.bat        cpappend.bat                  shutdown.bat     tomcat-native-1.1.22-src  version.sh
catalina.sh         digest.bat                    shutdown.sh      tomcat-native.tar.gz
catalina-tasks.xml  digest.sh                     startup.bat      tool-wrapper.bat
commons-daemon.jar  setclasspath.bat              startup.sh       tool-wrapper.sh
[root@zonghe bin]# cd tomcat-native-1.1.22-src/
CHANGELOG.txt  jni/           KEYS           LICENSE        NOTICE         README.txt   
[root@zonghe bin]# cd tomcat-native-1.1.22-src/jni/native/
[root@zonghe native]# ./configure --with-apr=/usr --with-ssl  
checking build system type... x86_64-unknown-linux-gnu
checking host system type... x86_64-unknown-linux-gnu
checking target system type... x86_64-unknown-linux-gnu
checking for a BSD-compatible install... /usr/bin/install -c
checking for working mkdir -p... yes
Tomcat Native Version: 1.1.22
checking for chosen layout... tcnative
checking for APR... yes
  setting CC to "gcc"
  setting CPP to "gcc -E"
checking for JDK location (please wait)... /usr/local/jdk1.6.0_43 from environment
checking Java platform... checking Java platform...
checking for sablevm... NONE
  adding "-I/usr/local/jdk1.6.0_43/include" to TCNATIVE_PRIV_INCLUDES
checking os_type directory...  linux
  adding "-I/usr/local/jdk1.6.0_43/include/linux" to TCNATIVE_PRIV_INCLUDES
checking for gcc... gcc
checking whether the C compiler works... yes
checking for C compiler default output file name... a.out
checking for suffix of executables...
checking whether we are cross compiling... no
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether gcc accepts -g... yes
checking for gcc option to accept ISO C89... none needed
checking for OpenSSL library... using openssl from /usr/lib and /usr/include
checking OpenSSL library version... ok
checking for OpenSSL DSA support... yes
  setting TCNATIVE_LDFLAGS to "-lssl -lcrypto"
  adding "-DHAVE_OPENSSL" to CFLAGS
  setting TCNATIVE_LIBS to ""
  setting TCNATIVE_LIBS to " /usr/lib64/libapr-1.la  -lpthread -ldl"
configure: creating ./config.status
config.status: creating tcnative.pc
config.status: creating Makefile
config.status: executing default commands
[root@zonghe bin]#make && make install


      更新共享库   

[root@zonghe native]# echo "/usr/local/apr/lib" >> /etc/ld.so.conf
[root@zonghe native]# ldconfig


      检查是否安装好

[root@zonghe native]# ldconfig -v|grep native
        libtcnative-1.so.0 -> libtcnative-1.so.0.1.22

     到此，tomcat native已经安装完成