运营心得

1、有网络连接的软件，设置最重要的3个参数（tomcat,nginx,mysql,redis）。

    a、线程数

    b、连接数

    c、连接超时

JVM配置

export JAVA_OPTS="-server-Xms6000M-Xmx6000M-Xmn500M-XX:PermSize=500M-XX:MaxPermSize=500M-XX:SurvivorRatio=65536-XX:MaxTenuringThreshold=0-Xss256K-Xnoclassgc-XX:+DisableExplicitGC-XX:+UseParNewGC-XX:+UseConcMarkSweepGC-XX:+UseCMSCompactAtFullCollection-XX:CMSFullGCsBeforeCompaction=0-XX:+CMSClassUnloadingEnabled-XX:-CMSParallelRemarkEnabled-XX:CMSInitiatingOccupancyFraction=90-XX:SoftRefLRUPolicyMSPerMB=0-XX:+PrintClassHistogram-XX:+PrintGCDetails-XX:+PrintGCDateStamps-XX:+PrintHeapAtGC-XX:+PrintClassHistogram-Xloggc:/home/logs/gc.log"# for remote debug,these params can also be added to the JAVA_OPTSport=8900export CATALINA_OPTS="-Xdebug -Xrunjdwp:transport=dt_socket,address=$port,server=y,suspend=n"

tomcat配置