jetty9.x版本配置优化

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

java -jar ..jetty-distribution-9.2.5.v20141112start.jar --add-to-start=jvm

2.查看目录下的start.ini文件

cat ..jetty-distribution-9.2.5.v20141112start.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