tomcat,mysql,linux服务器性能调优

tomcat调优 vi catalina.sh
JAVA_OPTS='-server -Xms10240m -Xmx10240m -XX:PermSize=512M -XX:MaxNewSize=1024m -XX:MaxPermSize=1024m -Djava.awt.headless=true'


java -XmxXXXXM -version 最大内存测试

mysql
show variables like 'max_connections';(查可以看当前的最大连接数)


vi /etc/my.cnf
max_connections=1000

server.xml
<Connector port="8080" protocol="HTTP/1.1"
               connectionTimeout="30000"
               redirectPort="8443"
               compression="on"
               compressionMinSize="50"
               compressableMimeType="text/html,text/xml,text/javascript,text/css,text/plain"
               maxThreads="1000" acceptCount="1000"/>


set GLOBAL max_connections=1000


Linux

top->1
ps -efL|grep java|wc -l


 <property name="initialSize" value="1000"/>


netstat -na | grep ESTAB | grep 80 | wc -l