linux 下tomcat安装apr运行模式优化并发性能
（一）简单介绍Tomcat支持三种接收请求的处理方式：BIO、NIO、APR 。
BIO由于每个请求都要创建一个线程来处理，线程开销比较大，不能再高并发的场景，性能也是最低的。
NIO是一个基于缓冲区、并能提供非阻塞I/O操作的Java API，比传统的bio更好的并发性能。
APR（Apache Portable Run-time libraries）简单理解，就是从操作系统级别解决异步IO问题，大幅度的提高服务器的处理和响应性能， 也是Tomcat运行高并发应用的首选模式。 启用这种模式稍微麻烦一些，需要安装一些依赖库，以下就是安装所需的条件：
1，最新的apr
2，最新的apr-util
3，tomcat-native.tar.gz(在tomcat/bin/下有相应的安装tar包
（二）安装步骤
1，安装相应的依赖库
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# yum install -y apr-devel openssl-devel gcc make
Loaded plugins: fastestmirror
Determining fastest mirrors
* base: mirrors.163.com
* epel: mirror01.idc.hinet.net
* extras: mirrors.163.com
* updates: mirrors.cn99.com
base | 3.7 kB 00:00
epel | 4.3 kB 00:00
epel/primary_db | 5.9 MB 00:01
extras | 3.4 kB 00:00
jenkins | 2.9 kB 00:00
jenkins/primary_db |19 kB 00:01
updates | 3.4 kB 00:00
updates/primary_db | 5.4 MB 00:02
Setting up Install Process
Package apr-devel-1.3.9-5.el6_2.x86_64 already installed and latest version
Resolving Dependencies
--> Running transaction check
---> Package gcc.x86_64 0:4.4.7-16.el6 will be updated
--> Processing Dependency: gcc = 4.4.7-16.el6 for package: gcc-c++-4.4.7-16.el6.x86_64
---> Package gcc.x86_64 0:4.4.7-17.el6 will be an update
--> Processing Dependency: libgomp = 4.4.7-17.el6 for package: gcc-4.4.7-17.el6.x86_64
--> Processing Dependency: cpp = 4.4.7-17.el6 for package: gcc-4.4.7-17.el6.x86_64
--> Processing Dependency: libgcc >= 4.4.7-17.el6 for package: gcc-4.4.7-17.el6.x86_64
gcc.x86_64 0:4.4.7-17.el6 make.x86_64 1:3.81-23.el6 openssl-devel.x86_64 0:1.0.1e-48.el6_8.4
Dependency Updated:
cpp.x86_64 0:4.4.7-17.el6 gcc-c++.x86_64 0:4.4.7-17.el6 libgcc.x86_64 0:4.4.7-17.el6
libgomp.x86_64 0:4.4.7-17.el6 libstdc++.x86_64 0:4.4.7-17.el6 libstdc++-devel.x86_64 0:4.4.7-17.el6
openssl.x86_64 0:1.0.1e-48.el6_8.4
Complete!
2，安装apr动态库，将最新版本的apr下载到目录下（http://apr.apache.org）目前最新的是apr-1.5.2.tar.gz
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# wget http://mirrors.cnnic.cn/apache//apr/apr-1.5.2.tar.gz
--2017-03-02 17:17:32--http://mirrors.cnnic.cn/apache//apr/apr-1.5.2.tar.gz
正在解析主机 mirrors.cnnic.cn... 218.241.113.17
正在连接 mirrors.cnnic.cn|218.241.113.17|:80... 已连接。
已发出 HTTP 请求，正在等待回应... 200 OK
长度：1031613 (1007K)
正在保存至: “apr-1.5.2.tar.gz”
100%[===========================================================================================>] 1,031,613 1.69M/s in 0.6s
2017-03-02 17:17:33 (1.69 MB/s) - 已保存 “apr-1.5.2.tar.gz” )
# tar xf apr-1.5.2.tar.gz
# cd apr-1.5.2
# ./configure --prefix=/usr/local/apr
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
Configuring APR library
Platform: x86_64-unknown-linux-gnu
checking for working mkdir -p... yes
APR Version: 1.5.2
checking for chosen layout... apr
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... no
Restore user-defined environment settings...
restoring CPPFLAGS to ""
setting EXTRA_CPPFLAGS to "-DLINUX -D_REENTRANT -D_GNU_SOURCE"
restoring CFLAGS to ""
setting EXTRA_CFLAGS to "-g -O2 -pthread"
restoring LDFLAGS to ""
setting EXTRA_LDFLAGS to ""
restoring LIBS to ""
setting EXTRA_LIBS to "-lrt -lcrypt-lpthread"
restoring INCLUDES to ""
setting EXTRA_INCLUDES to ""
configure: creating ./config.status
config.status: creating Makefile
config.status: creating include/apr.h
config.status: creating build/apr_rules.mk
config.status: creating build/pkg/pkginfo
config.status: creating apr-1-config
config.status: creating apr.pc
config.status: creating test/Makefile
config.status: creating test/internal/Makefile
config.status: creating include/arch/unix/apr_private.h
config.status: executing libtool commands
rm: cannot remove `libtoolT': No such file or directory
config.status: executing default commands
# make && make install
make: Entering directory `/tmp/install/apr-1.5.2'
/tmp/install/apr-1.5.2/build/mkdir.sh tools
/bin/sh /tmp/install/apr-1.5.2/libtool --silent --mode=compile gcc -g -O2 -pthread -DHAVE_CONFIG_H-DLINUX -D_REENTRANT -D_GNU_SOURCE -I./include -I/tmp/install/apr-1.5.2/include/arch/unix -I./include/arch/unix -I/tmp/install/apr-1.5.2/include/arch/unix -I/tmp/install/apr-1.5.2/include -I/tmp/install/apr-1.5.2/include/private -I/tmp/install/apr-1.5.2/include/private-o tools/gen_test_char.lo -c tools/gen_test_char.c && touch tools/gen_test_char.lo
/bin/sh /tmp/install/apr-1.5.2/libtool --silent --mode=link gcc -g -O2 -pthread -DHAVE_CONFIG_H-DLINUX -D_REENTRANT -D_GNU_SOURCE -I./include -I/tmp/install/apr-1.5.2/include/arch/unix -I./include/arch/unix -I/tmp/install/apr-1.5.2/include/arch/unix -I/tmp/install/apr-1.5.2/include -I/tmp/install/apr-1.5.2/include/private -I/tmp/install/apr-1.5.2/include/private -no-install -o tools/gen_test_char tools/gen_test_char.lo -lrt -lcrypt-lpthread
/tmp/install/apr-1.5.2/build/mkdir.sh include/private
3,下载安装apr-util（http://apr.apache.org/download.cgi）
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# wget http://mirrors.cnnic.cn/apache//apr/apr-util-1.5.4.tar.gz
--2017-03-02 17:23:09--http://mirrors.cnnic.cn/apache//apr/apr-util-1.5.4.tar.gz
正在解析主机 mirrors.cnnic.cn... 218.241.113.17
正在连接 mirrors.cnnic.cn|218.241.113.17|:80... 已连接。
已发出 HTTP 请求，正在等待回应... 200 OK
长度：874044 (854K)
正在保存至: “apr-util-1.5.4.tar.gz”
100%[===========================================================================================>] 874,044 1.68M/s in 0.5s
2017-03-02 17:23:10 (1.68 MB/s) - 已保存 “apr-util-1.5.4.tar.gz” )
# tar xf apr-util-1.5.4.tar.gz
# cd apr-util-1.5.4
# ./configure --prefix=/usr/local/apr-util --with-apr=/usr/local/apr/
# make && make install
make: Entering directory `/tmp/install/apr-util-1.5.4'
/bin/sh /usr/local/apr/build-1/libtool --silent --mode=compile gcc -g -O2 -pthread -DHAVE_CONFIG_H-DLINUX -D_REENTRANT -D_GNU_SOURCE -I/tmp/install/apr-util-1.5.4/include -I/tmp/install/apr-util-1.5.4/include/private-I/usr/local/apr/include/apr-1 -o buckets/apr_brigade.lo -c buckets/apr_brigade.c && touch buckets/apr_brigade.lo
If you ever happen to want to link against installed libraries
in a given directory, LIBDIR, you must either use libtool, and
specify the full pathname of the library, or use the `-LLIBDIR'
flag during linking and do at least one of the following:
- add LIBDIR to the `LD_LIBRARY_PATH' environment variable
during execution
- add LIBDIR to the `LD_RUN_PATH' environment variable
during linking
- use the `-Wl,-rpath -Wl,LIBDIR' linker flag
- have your system administrator add LIBDIR to `/etc/ld.so.conf'
See any operating system documentation about shared libraries for
more information, such as the ld(1) and ld.so(8) manual pages.
----------------------------------------------------------------------
/usr/bin/install -c -m 644 aprutil.exp /usr/local/apr-util/lib
/usr/bin/install -c -m 755 apu-config.out /usr/local/apr-util/bin/apu-1-config
# ll /usr/local/apr-util/
总用量 12
drwxr-xr-x 2 root root 4096 3月 2 17:24 bin
drwxr-xr-x 3 root root 4096 3月 2 17:24 include
drwxr-xr-x 3 root root 4096 3月 2 17:24 lib
3,安装tomcat-native。
方法一：源码安装，不过安装过程中会有一些依赖，特别麻烦，我上次在这个问题上一直有报错，浪费掉一两天的时间才解决。一般tomcat的/bin/下都会有这个安装文件。
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# cd /usr/local/apache-tomcat-7.0.63/bin
# ls
bootstrap.jar commons-daemon.jar daemon.sh setclasspath.shstartup.sh tool-wrapper.bat
catalina.bat commons-daemon-native.tar.gzdigest.bat shutdown.bat tomcat-juli.jar tool-wrapper.sh
catalina.sh configtest.bat digest.sh shutdown.sh tomcat-native-1.1.33-srcversion.bat
catalina-tasks.xmlconfigtest.sh setclasspath.batstartup.bat tomcat-native.tar.gz version.sh
# tar xf tomcat-native.tar.gz
# cd tomcat-native-1.1.33-src/jni/native/
# ./configure --with-apr=/usr/local/apr/bin/apr-1-config --with-java-home=/usr/java/jdk1.7.0_79/
# make && make install
最后添加环境变量
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# vim /etc/profile
export LD_LIBRARY_PATH=/usr/local/apr/lib
# source /etc/profile
方法二：使用yum安装，方便快捷省时省力比较推荐。
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# yum list|grep tomcat-native
# yum install tomcat-native -y
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
* base: mirrors.163.com
* epel: mirror01.idc.hinet.net
* extras: mirrors.163.com
* updates: mirrors.cn99.com
Setting up Install Process
Resolving Dependencies
--> Running transaction check
---> Package tomcat-native.x86_64 0:1.1.34-1.el6 will be installed
--> Finished Dependency Resolution
Dependencies Resolved
=====================================================================================================================================
Package Arch Version Repository Size
=====================================================================================================================================
Installing:
tomcat-native x86_64 1.1.34-1.el6 epel 60 k
Transaction Summary
=====================================================================================================================================
Install 1 Package(s)
Total download size: 60 k
Installed size: 165 k
Downloading Packages:
tomcat-native-1.1.34-1.el6.x86_64.rpm |60 kB 00:00
Running rpm_check_debug
Running Transaction Test
Transaction Test Succeeded
Running Transaction
Installing : tomcat-native-1.1.34-1.el6.x86_64 1/1
/sbin/ldconfig: /usr/lib/libtcnative-1.so.0 不是符号连接
Verifying: tomcat-native-1.1.34-1.el6.x86_64 1/1
Installed:
tomcat-native.x86_64 0:1.1.34-1.el6
Complete!
# rpm -qa|grep tomcat-native
tomcat-native-1.1.34-1.el6.x86_64
unset i
unset -f pathmunge
配置相关的全局变量：
方法一：修改/etc/profie文件
# vim /etc/profile
export LD_LIBRARY_PATH=/usr/local/apr/lib
# source /etc/profile
方法二：编辑$TOMCAT_HOME/bin/catalina.sh文件，在虚拟机启动参数JAVA_OPTS中添加
java.library.path参数，指定apr库的路径
# vim /usr/local/tomcat_thirdmanage/bin/catalina.sh
JAVA_OPTS="$JAVA_OPTS -Djava.library.path=/usr/local/apr/lib"
tomcat8以下版本，需要指定运行模式
最后启动下tomcat，查看日志为启用了apr模式将protocol从HTTP/1.1改成org.apache.coyote.http11.Http11AprProtocol
查看启动日志，即为完成。
（三）tomcat优化
（1）优化连接池
# vim /usr/local/apache-tomcat-7.0.63/conf/server.xml
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放开连接池：
<Executor name="tomcatThreadPool" namePrefix="catalina-exec-"
maxThreads="150" minSpareThreads="20" maxSpareThreads="50"/>
优化连接端口：
<Connector port="8080" executor="tomcatThreadPool" protocol="org.apache.coyote.http11.Http11AprProtocol"
URIEncoding="UTF-8"
connectionTimeout="20000"
enableLookups="false"
disableUploadTimeout="false"
connectionUploadTimeout="150000"
acceptCount="300"
redirectPort="8443" />
（2）修改catalina.sh防止内存溢出。
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# vim /usr/local/tomcat/bin/catalina.sh
# -----------------------------------------------------------------------------
JAVA_OPTS="-server -Xms8192m-Xmx8192m -Xss512k -XX:PermSize=1024m -XX:MaxNewSize=2048m -XX:MaxNewSize=2048m -XX:MaxPermSize=1024m -XX:+DisableExplicitGC -XX:+UseParNewGC -XX:+UseConcMarkSweepGC -XX:+CMSParallelRemarkEnabled -XX:+UseCMSCompactAtFullCollection -XX:+UseFastAccessorMethods -Djava.awt.headless=true-Dfile.encoding=UTF-8 -Dsun.jnu.encoding=UTF-8"
支持一下
页:
[1]