tomcat调优以及jvm参数调优

Tomcat调优

首先，打开tomcat/conf/server.xml文件，搜索Executor name=“tomcatThreadPool”，开启并调整为：

<Executor name="tomcatThreadPool" namePrefix="catalina-exec-" maxThreads="500" minSpareThreads="20" maxSpareThreads="50" maxIdleTime="60000"/>

然后，修改<Connector …>节点，增加 executor 属性，搜索port=“80”，调整为：

<Connector executor="tomcatThreadPool"
port="80"
protocol="HTTP/1.1"
URIEncoding="UTF-8"
connectionTimeout="30000"
enableLookups="false"
disableUploadTimeout="false"
connectionUploadTimeout="150000"
acceptCount="300"
keepAliveTimeout="120000"
maxKeepAliveRequests="1"
compression="on"
compressionMinSize="2048" compressableMimeType="text/html,text/xml,text/javascript,text/css,text/plain,image/gif,image/jpg,image/png" redirectPort="8443" />

JVM调优

Windows打开tomcat/bin/catalina.bat，linux打开tomcat/bin/catalina.sh文件，如linux–首行加入如下参数：

CATALINA_OPTS="
-server
-Xms8192M
-Xmx8192M
-Xss512k
-XX:NewSize=2250M
-XX:MaxNewSize=2250M
-XX:PermSize=128M
-XX:MaxPermSize=256M
-XX:+AggressiveOpts
-XX:+UseBiasedLocking
-XX:+DisableExplicitGC
-XX:+UseParNewGC
-XX:+UseConcMarkSweepGC
-XX:MaxTenuringThreshold=31
-XX:+CMSParallelRemarkEnabled
-XX:+UseCMSCompactAtFullCollection
-XX:LargePageSizeInBytes=128m
-XX:+UseFastAccessorMethods
-XX:+UseCMSInitiatingOccupancyOnly
-Duser.timezone=Asia/Shanghai
-Djava.awt.headless=true"