Tomcat APR Configuration

Tomcat can use Apr to provide super scalability and performance, and better integrate local server technology. APR (Apache Portable Runtime) is a highly portable library, which is the core of Apache HTTP Server 2.x. APR has many functions, including access to advanced Io functions (such as sendfile, epoll, and OpenSSL), OS-level functions (Random Number Generation, system status, and so on), and local process management (shared memory, NT pipeline and Unix sockets ). These functions enable Tomcat as a common front-end web server to better integrate with other local web technologies. In general, Java is more efficient as a high-performance WEB server platform rather than simply as a backend container.

In the product environment, especially when Tomcat is directly used as a Web server, you should use Tomcat native to improve its performance. For detailed configuration and installation, see Tomcat documentation.

 

If noAPRTechnology, startTomcatThe following prompt is displayed:

Information: 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

 

According to official instructions:

* APR Library

* OpenSSL Libraries

OpenSSL can be installed using Yum install OpenSSL-devel, or *. GZ downloaded from Apr.

Apr-1.3.2.tar.gz

Apr-util-1.3.2.tar.gz

Two can be found in the http://apache.mirror.phpchina.com/apr.

The tomcat-native.tar.gz can be found in the tomcat/bin directory.

 

 

Below isAPRConfiguration process:

InstallAPR

 

1. Tar zxvf apr-1.3.2.tar.gz

2. CD apr-1.3.2

3../configure

4. Make

5. Make install

 

APR is installed in/usr/local/APR by default.

 

InstallApr-util

1. Tar zxvf apr-util-1.3.2.tar.gz

2. CD apr-util-1.3.2

3../configure -- With-Apr =/usr/local/APR

4. Make

5. Make install

 

InstallTomcat-native

 

1. CD/usr/local/tomcat-6.0.18/bin

2. Tar zxvf tomcat-native.tar.gz

3. CD tomcat-native-1.1.14-src/JNI/native

4../configure -- With-Apr =/usr/local/APR -- With-Java-home =/usr/Java/jdk1.6.0 _ 11

5. Make

6. make install

 

SetAPREnvironment variables:

1. VI/etc/profile

2. Add the following content

Apr_home =/usr/local/APR/

LD_LIBRARY_PATH = $ LD_LIBRARY_PATH: $ apr_home/lib

Export LD_LIBRARY_PATH

3. Make the configuration take effect. Source/etc/profile

 

OtherwiseTomcatWe do not use the above setting method, but directlyTomcatOfBinUnderCatalina. ShAdd the following Configuration:

LD_LIBRARY_PATH = $ LD_LIBRARY_PATH:/usr/local/APR/lib

Export LD_LIBRARY_PATH

 

StartTomcatAfter,Check the log with the following line:

Information: Apr capabilities: ipv6 [True], sendfile [True], accept filters [false], random [True].

 

Bytes -------------------------------------------------------------------------------------------------

Create High-ThreadConnector:

<Connector Port = "8080" redirectport = "8443 ″
Maxthreads = "5000" Default 200

Minsparethreads = "1000" Default: 4 50

Maxsparethreads = "4000" Default: 50 100
Enablelookups = "false" Default Value: True

Acceptcount = "3500" Default Value: 10 50
Compression = "on" default off

Compressablem imetype = "text/html, text/XML, text/JavaScript, text/CSS, text/plain" default text/html, text/XML, text/plain
Connectiontimeout = "60000" Default 60000

DEBUG = "0 ″

Uriencoding = "UTF-8 ″

/>

 

Tomcat APR Configuration