resin之jvm优化

  经过几天的测试,系统终于较以前有所稳定了,特把优化后的参数发布出来,供朋友们一起讨论

我的服务器配置:至强双CPU2.2G,ECC内存4G,硬盘70G,操作系统:AS4 jdk1.5.0_02

      没优化之前,服务器经常抛出内存溢出,物理内存居高不下,还经常抛出keepalive 超过最大值500。服务器一天重启两三次,客户抱怨声不断。

 

<jvm-arg>-Xms1024M</jvm-arg>
 <jvm-arg>-Xmx1024M</jvm-arg>
 <jvm-arg>-Xmn256M</jvm-arg>
 <jvm-arg>-Xss1M</jvm-arg>
 
 <jvm-arg>-XX:PermSize=256M</jvm-arg>
 <jvm-arg>-XX:MaxPermSize=256M</jvm-arg>
 <jvm-arg>-XX:NewRatio=4</jvm-arg>
 <jvm-arg>-XX:SurvivorRatio=4</jvm-arg>
 <jvm-arg>-XX:MaxTenuringThreshold=7</jvm-arg>
 <jvm-arg>-XX:GCTimeRatio=10</jvm-arg>
 
 <jvm-arg>-XX:+UseConcMarkSweepGC</jvm-arg
 <jvm-arg>-XX:+UseCMSCompactAtFullCollection</jvm-arg>
 <jvm-arg>-XX:CMSFullGCsBeforeCompaction=5</jvm-arg>
  
 <jvm-arg>-XX:CMSInitiatingOccupancyFraction=70</jvm-arg>
 <jvm-arg>-XX:SoftRefLRUPolicyMSPerMB=0</jvm-arg>
 
 <jvm-arg>-XX:+PrintClassHistogram</jvm-arg>
 <jvm-arg>-XX:+PrintGCDetails</jvm-arg>
 <jvm-arg>-XX:+PrintGCTimeStamps</jvm-arg>
 <jvm-arg>-XX:+PrintGCApplicationConcurrentTime</jvm-arg>
 <jvm-arg>-XX:+PrintGCApplicationStoppedTime</jvm-arg
 <jvm-arg>-Xloggc:log/gc.log</jvm-arg>

 

优化以后,已经稳定运行四天了,物理空闲内存大概1G左右,不知道以上设置还有没有不合理的地方,如果有,请指教。

 

经过一段时间,又做了如下改动

<jvm-arg>-server</jvm-arg>
 <jvm-arg>-Xms1524M</jvm-arg>

 <jvm-arg>-Xmx1524M</jvm-arg>

 <jvm-arg>-Xmn512M</jvm-arg>
 <jvm-arg>-Xss1M</jvm-arg>
 

 <jvm-arg>-XX:PermSize=256M</jvm-arg>

 <jvm-arg>-XX:MaxPermSize=256M</jvm-arg

 <jvm-arg>-XX:SurvivorRatio=8</jvm-arg>

 <jvm-arg>-XX:MaxTenuringThreshold=7</jvm-arg>

 <jvm-arg>-XX:GCTimeRatio=19</jvm-arg>


 <jvm-arg>-XX:+UseParNewGC</jvm-arg>

 <jvm-arg>-XX:+UseConcMarkSweepGC</jvm-arg>
 <jvm-arg>-XX:+CMSPermGenSweepingEnabled</jvm-arg>
 <jvm-arg>-XX:+CMSClassUnloadingEnabled</jvm-arg

 <jvm-arg>-XX:+UseCMSCompactAtFullCollection</jvm-arg>

 <jvm-arg>-XX:CMSFullGCsBeforeCompaction=2</jvm-arg>
 <jvm-arg>-XX:-CMSParallelRemarkEnabled</jvm-arg>
 <jvm-arg>-XX:+DisableExplicitGC</jvm-arg

 <jvm-arg>-XX:CMSInitiatingOccupancyFraction=70</jvm-arg>

 <jvm-arg>-XX:SoftRefLRUPolicyMSPerMB=0</jvm-arg>
 

 <jvm-arg>-XX:+PrintClassHistogram</jvm-arg>

 <jvm-arg>-XX:+PrintGCDetails</jvm-arg>

 <jvm-arg>-XX:+PrintGCTimeStamps</jvm-arg>

 <jvm-arg>-XX:+PrintGCApplicationConcurrentTime</jvm-arg>

 <jvm-arg>-XX:+PrintGCApplicationStoppedTime</jvm-arg>  

 <jvm-arg>-Xloggc:log/gc.log</jvm-arg>

 

resin已经换成resin-pro-3.1.8版本了,现在系统运行越来越稳定了,高兴!

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