1. jetty9版本modules目录下jvm.mod来优化jetty-web容器.

java -jar ..\jetty-distribution-9.2.5.v20141112\start.jar --add-to-start=jvm

2.查看目录下的start.ini文件

cat ..\jetty-distribution-9.2.5.v20141112\start.ini

3.将start.ini配置复制jetty-web容器下的start.ini　　

GNU nano 2.7.4                                                                                     File: start.ini                                                                                               # --------------------------------------- --module=jvm## JVM Configuration## If JVM args are include in an ini file then --exec is needed## to start a new JVM from start.jar with the extra args.#### If you wish to avoid an extra JVM running, place JVM args## on the normal command line and do not use --exec--exec-Xmx512m-Xms512m#G1垃圾回收器建议不要指定Xmn的大小#-Xmn768m-Xss256k-XX:+UseG1GC-XX:MaxGCPauseMillis=200#-XX:+UseConcMarkSweepGC#-XX:ParallelCMSThreads=2#-XX:+CMSClassUnloadingEnabled#-XX:+UseCMSCompactAtFullCollection#-XX:CMSInitiatingOccupancyFraction=80#-internal:gc-XX:+PrintGCDateStamps-XX:+PrintGCTimeStamps-XX:+PrintGCDetails-XX:+PrintTenuringDistribution-XX:+PrintCommandLineFlags-XX:+DisableExplicitGC-verbose:gc-Xloggc:/var/log/jvm/iauth7003/heap_trace.txt-XX:+HeapDumpOnOutOfMemoryError#设置堆外内存,以便锁定每个应用所使用的内存大小-XX:MaxDirectMemorySize=64m#-XX:SurvivorRatio=4