tomcat parameter optimization

Recently, due to the performance problems of the project application, the parameters of the application container tomcat have been optimized.

tomcat version 8.0.23

First, configure a long connection from nginx to tomcat

nginx:

upstream tomcat_server{
      server xx.xx.xx.xx:8080
      keepalive 400;
}

..............

location /XXXXX {
       proxy_pass   http://tomcat_server/XXXXX/;
       proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
       proxy_set_header Cookie $http_cookie;
       proxy_http_version 1.1;
       proxy_set_header Connection "";
}

tomcat:

<Connector port="8080" protocol="org.apache.coyote.http11.Http11NioProtocol"
               connectionTimeout="15000"
               maxThreads="600"
               acceptCount="100"
               executor="tomcatThreadPool"
               acceptorThreadCount="4"
               keepAliveTimeout="-1"
               maxKeepAliveRequests="-1"
               maxPostSize="0"
               enableLookups="flase"
               redirectPort="8443" />

Then, increase the connection pool configuration

tomcat:

<Executor name="tomcatThreadPool" namePrefix="catalina-exec-"
                maxThreads="600"
                minSpareThreads="200"
                prestartminSpareThreads="true"
                maxQueueSize="100"/>


 <Connector port="8080" protocol="org.apache.coyote.http11.Http11NioProtocol"
               connectionTimeout="10000"
               acceptCount="100"
               executor="tomcatThreadPool"
               acceptorThreadCount="4"
               keepAliveTimeout="-1"
               maxKeepAliveRequests="-1"
               maxPostSize="0"
               enableLookups="flase"
               redirectPort="8443" />

The protocol here can also use nio2

protocol="org.apache.coyote.http11.Http11Nio2Protocol"

Finally, apr is also installed

Apr installation steps:

redhat6.1

1) Replace yum source wget http://mirrors.163.com/.help/CentOS6-Base-163.repo

Change $ releasever in CentOS6-Base-163.repo to 6

2) Execute the following command

yum clean all

yum makecache

yum install apr-devel

yum install openssl-devel

yum install gcc

yum install make

cd /opt/tomcat/apache-tomcat-8.0.23/bin/tomcat-native-1.1.33-src/jni/native

./configure --with-apr=/usr/bin/apr-1-config

make

make install

3) Configure environment variables

Add in /etc/profile

export LD_LIBRARY_PATH = /usr/local/apr/lib

export LD_RUN_PATH=/usr/local/apr/lib

ubuntu16.04

1) Update a download source

apt-get clean

apt-get update

apt-get upgrade

2) apt-get install libapr1 libapr1-dev libaprutil1-dev

3) Configure environment variables

Add in ~/.bashrc

export LD_LIBRARY_PATH = /usr/local/apr/lib

export LD_RUN_PATH=/usr/local/apr/lib

Enable apr's tomcat configuration

<Connector port="8080" protocol="org.apache.coyote.http11.Http11AprProtocol"
               connectionTimeout="10000"
               acceptCount="100"
               executor="tomcatThreadPool"              
               keepAliveTimeout="-1"
               maxKeepAliveRequests="-1"
               maxPostSize="0"
               enableLookups="flase"
               redirectPort="8443" />

tomcat parameter optimization

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