tomcat优化总结【持续更新】

配置优化

 <Connector port="8080"  connectionTimeout="200"
               maxThreads="64"  minSpareThread="8" acceptCount="20000"  URIEncoding="UTF-8"
               maxKeepAliveRequests="8" keepAliveTimeout="300000"  maxConnections="2048"
               enableLookups="false"
               redirectPort="8443" protocol="org.apache.coyote.http11.Http11NioProtocol" />

 JVM调优参数

JVM调优参数：

-Xms4096M

-Xmx4096M

-Xss512k

-XX:NewSize=2250M

-XX:MaxNewSize=2250M

-XX:MetaspaceSize=512m

-XX:MaxMetaspaceSize=1024m

-XX:+AggressiveOpts

-XX:+UseBiasedLocking

-XX:+DisableExplicitGC

-XX:+UseParNewGC

-XX:+UseConcMarkSweepGC

-XX:+CMSParallelRemarkEnabled

-XX:LargePageSizeInBytes=128m

-XX:+UseFastAccessorMethods

-XX:+UseCMSInitiatingOccupancyOnly

-Duser.timezone=Asia/Shanghai

-Djava.awt.headless=true"

 系统调优参数

最大文件描述符的数量：65535

net.ipv4.tcp_max_tw_buckets = 5000

net.ipv4.tcp_tw_recycle = 1

net.ipv4.tcp_tw_reuse = 1

net.ipv4.tcp_syncookies = 1

net.ipv4.tcp_fin_timeout = 30

net.ipv4.tcp_max_syn_backlog = 2048

net.ipv4.tcp_synack_retries = 2

net.ipv4.tcp_keepalive_intvl = 30

net.ipv4.tcp_keepalive_probes = 3

net.ipv4.tcp_keepalive_time = 1800

net.ipv4.ip_local_port_range = 1024    65000