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Basic jboss tuning http://wiki.jboss.org/wiki/JBossASTuningSlimingSub Topics
Scheduling tasksGarbage Collection
Useful options:-verbose:gc -Xloggc:<filename> -XX:ParallelGCThreads=n (where n should not exceed number of cpus)
Heap tuning
Useful options:-Xms : minimum heap size -Xmx : max heap size -XX:MaxNewSize= : max young generation size -XX:NewRatio : ratio of young to tenured generation -XX:UseTLAB : provide each thread in application with its own allocation area in the eden space -XX:MaxPermSize : max perm generation size
Jboss rewrite
http://www.jboss.org/file-access/default/members/jbossweb/freezone/docs/2.1.0/rewrite.html- edit server.xml under jboss-web.deployer/
- add <Valve className="org.jboss.web.rewrite.RewriteValve" /> to the <Host> section
- then create rewrite.properties under $JB_HOME/server/default/conf/
- the file should look like
RewriteRule ^/abc /cde
CLOSE_WAIT bug
bug - https://jira.jboss.org/jira/browse/JBPAPP-366install - http://www.jboss.org/community/docs/DOC-9912
Clustering
要在JBOSS中配置JVM路由( JVMRoute)，否則APACHE就 法知道究竟哪些SESSION是属于哪个节点的。1)修改jboss-service.xml配置文件%jboss%\server\all\deploy\jbossweb-tomcat55.sar\ META-INF\ jboss-service.xml將<attribute name="UseJK">false</attribute>，将false值改为true。
2)修改server.xml配置文件
修改server1上的%jboss%\server\all\deploy\jbossweb-tomcat55.sar\ server.xml
<Engine name="jboss.web" defaultHost="localhost">
给它增 一个jvmRoute属性：
<Engine jvmRoute="server1" name="jboss.web" defaultHost="localhost">
请注意，jvmRoute的值必须和mod_jk中的节点名字一致，
3）WEB程序的配置
需要在 的Web应用中修改配置文件，让它支持集群。在WEB-INF\web.xml中 入属性： <distributable/>
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