秒殺tomcat最適化

秒殺tomcat最適化

 QQ, ！

要件:

本文はtomcat 8.5.20を目標とする

1. 
2. 
3.APR 

APR最適化関連パッケージ

1.メモリの最適化

 catalina
JAVA_OPTS="-server -Xms2048M -Xmx2048M -XX:+HeapDumpOnOutOfMemoryError 
-XX:HeapDumpPath=$CATALINA_HOME/logs/heap.dump"
# Register custom URL handlers
server.xml  
maxConnections="300"
acceptCount="200"
maxThreads="400"
minSpareThreads="200"/>
 


${tomcat}/webapps/docs/config/host.html
    
autoDeploy：This flag value indicates if Tomcat should check periodically for new or updated web applications while Tomcat is running
    
${tomcat}/webapps/docs/config/http.html
enableLookups：false
    
${tomcat}/webapps/docs/config/context.html:
reloadable：false

2.もしあなたのウェブサイトが高い同時性を持っているならば、APRモードを使うことを提案します

   http://apr.apache.org/
    ：

APR 1.2+ development headers (libapr1-dev package) OpenSSL 1.0.2+ development headers (libssl-dev package) JNI headers from Java compatible JDK 1.4+ GNU development environment (gcc, make)

   yum install apr* openssl-devel gcc make
   
   tar zxvf apr-1.4.5.tar  
   cd apr-1.4.5  
   ./configure --prefix=/usr/local/apr  
   make  
   make install  
   
   tar -zxvf apr-iconv-1.2.1.tar.gz  
   cd apr-iconv-1.2.1  
   ./configure --prefix=/usr/local/apr-iconv --with-apr=/usr/local/apr  
   make  
   make install
   
   yum install expat-devel
   
   tar zxvf apr-util-1.3.12.tar.gz  
   cd apr-util-1.3.12  
   ./configure --prefix=/usr/local/apr-util --with-apr=/usr/local/apr
   make  
   make install 
   
    openssl 1.0.2
   ./config  --prefix=/usr/local/openssl
    Makefile：
   vi Makefile
    ：CFLAG=     -DOPENSSL_THREADS
    ：  CFLAG= -fPIC -DOPENSSL_THREADS
    -fPIC
    ：
   make && make install
   
   cd bin
   tar -zxvf tomcat-native.tar.gz
   cd tomcat-native-1.2.12-src
   cd native
   ./configure --with-apr=/usr/local/apr --with-ssl=/usr/local/openssl 
   make
   make install
   
   catalina.sh：
   JAVA_OPTS="$JAVA_OPTS -Djava.library.path=/usr/local/apr/lib
    ： apr ，jvm native ， Metaspace , JVM ：-XX:MetaspaceSize=128m
   JAVA_OPTS="-server -Xms2048M -Xmx2048M -XX:MetaspaceSize=128M -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=$CATALINA_HOME/logs/heap.dump"
   
   server.xml：