resin4.0 permgen space

出現這個問題的原因網上有很多種分析，就不在這裡一一分析了，這裡隻說解決的辦法，就是手動設定jdk參數，在resin的conf/resin.xml中添加配置：

<server-default>
		<jvm-arg>-Xms1024m</jvm-arg>
		<jvm-arg>-Xmx1024m</jvm-arg>
		<jvm-arg>-Xmn256m</jvm-arg>
		<jvm-arg>-XX:PermSize=128m</jvm-arg>
		<jvm-arg>-XX:MaxPermSize=256m</jvm-arg>
		<thread-max>1024</thread-max>
		<socket-timeout>30s</socket-timeout>
		<keepalive-max>512</keepalive-max>
		<keepalive-timeout>60s</keepalive-timeout>
	  </server-default>
           

這些參數大家都明白，下面是我的完整的配置：

<!--
   - Resin 4.0 configuration file.
  -->
<resin xmlns="http://caucho.com/ns/resin"
       xmlns:resin="urn:java:com.caucho.resin">

  <!-- property-based Resin configuration -->
  <resin:properties path="${__DIR__}/resin.properties" optional="true"/>
  <resin:properties path="cloud:/resin.properties"
                    optional="true" recover="true"/>


  <resin:if test="${properties_import_url}">
     <resin:properties path="${properties_import_url}"
                    optional="true" recover="true"/>
  </resin:if>


  <!-- Logging configuration for the JDK logging API -->
  <log-handler name="" level="all" path="stdout:"
               timestamp="[%y-%m-%d %H:%M:%S.%s]"
               format=" {${thread}} ${log.message}"/>
               
  <!-- 
     - Alternative pseudo-TTCC log format
     -
     - <log-handler name="" level="all" path="stdout:"
     -           timestamp="%y-%m-%d %H:%M:%S.%s"
     -           format=" [${thread}] ${log.level} ${log.shortName} - ${log.message}"/>
    -->
   
  <!--
     - level='info' for production
     - 'fine' or 'finer' for development and troubleshooting
    -->
  <logger name="" level="${log_level?:'info'}"/>

  <logger name="com.caucho.java" level="config"/>
  <logger name="com.caucho.loader" level="config"/>

  <!--
     - Default configuration applied to all clusters, including
     - HTTP, HTTPS, and /resin-admin configuration.
    -->
  <resin:import path="${__DIR__}/cluster-default.xml"/>
  
  <!--
     - health configuration
    -->
  <resin:import path="${__DIR__}/health.xml"/>

  
  <!--
     - Remote management requires at least one enabled admin user.
    -->
  <resin:AdminAuthenticator>
    <user name="${admin_user}" password="${admin_password}"/>
    
    <resin:import path="${__DIR__}/admin-users.xml" optional="true"/>
    <resin:import path="cloud:/admin-users.xml" optional="true" recover="true"/>
  </resin:AdminAuthenticator>

  <!--
     - For clustered systems, create a password in as cluster_system_key
    -->
  <cluster-system-key>${cluster_system_key}</cluster-system-key>

  <!--
     - For production sites, change dependency-check-interval to something
     - like 600s, so it only checks for updates every 10 minutes.
    -->
  <dependency-check-interval>${dependency_check_interval?:'2s'}</dependency-check-interval>

  <!-- For resin.properties dynamic cluster joining -->
  <home-cluster>${home_cluster}</home-cluster>
  <home-server>${home_server}</home-server>
  <elastic-server>${elastic_server}</elastic-server>
  <elastic-dns>${elastic_dns}</elastic-dns>

  <!--
     - Configures the main application cluster.  Load-balancing configurations
     - will also have a web cluster.
    -->
  <cluster id="app">
    <server-default>
		<jvm-arg>-Xms1024m</jvm-arg>
		<jvm-arg>-Xmx1024m</jvm-arg>
		<jvm-arg>-Xmn256m</jvm-arg>
		<jvm-arg>-XX:PermSize=128m</jvm-arg>
		<jvm-arg>-XX:MaxPermSize=256m</jvm-arg>
		<thread-max>1024</thread-max>
		<socket-timeout>30s</socket-timeout>
		<keepalive-max>512</keepalive-max>
		<keepalive-timeout>60s</keepalive-timeout>
	  </server-default>
    <!-- define the servers in the cluster -->
    <server-multi id-prefix="app-" address-list="${app_servers}" port="6800"/>

    <host-default>
      <!-- creates the webapps directory for .war expansion -->
      <web-app-deploy path="webapps"
                      expand-preserve-fileset="WEB-INF/work/**"
                      multiversion-routing="${webapp_multiversion_routing}"
                      path-suffix="${elastic_webapp?resin.id:''}"/>
    </host-default>

    <!-- auto virtual host deployment in hosts/foo.example.com/webapps -->
    <host-deploy path="hosts">
      <host-default>
        <resin:import path="host.xml" optional="true"/>
      </host-default>
    </host-deploy>

    <!-- the default host, matching any host name -->
    <host id="" root-directory=".">
      <!--
         - webapps can be overridden/extended in the resin.xml
        -->
      <web-app id="/" root-directory="webapps/MyItBook"/>
	  <web-app id="/manager" root-directory="/home/www/MyItBookManager"/>
    </host>
      
    <resin:if test="${resin_doc}">
      <host id="${resin_doc_host}" root-directory="${resin_doc_host}">
        <web-app id="/resin-doc" root-directory="${resin.root}/doc/resin-doc"/>
      </host>
    </resin:if>
	
  </cluster>

  <cluster id="web">
    <!-- define the servers in the cluster -->
    <server-multi id-prefix="web-" address-list="${web_servers}" port="6810"/>

    <host id="" root-directory="web">
      <web-app id="">
        <resin:LoadBalance regexp="" cluster="app"/>
      </web-app>
    </host>
  </cluster>

  <cluster id="memcached" xmlns:memcache="urn:java:com.caucho.memcached">
    <!-- define the servers in the cluster -->
    <server-multi id-prefix="memcached-" address-list="${memcached_servers}" port="6820">
      <!-- listen for the memcache protocol -->
      <listen port="${memcached_port?:11211}"
              keepalive-timeout="600s" socket-timeout="600s">
        <memcache:MemcachedProtocol/>
      </listen>
    </server-multi>
  </cluster>
  
  <cluster id="proxycache">
    <!-- define the servers in the cluster -->
    <server-multi id-prefix="proxycache-" address-list="${proxycache_servers}" port="6830"/>

    <host id="" root-directory="proxycache">
      <web-app id="">
        <resin:HttpProxy regexp=".*">
          <!-- backend HTTP servers to proxy to -->
          <addresses>${backend_servers}</addresses>
        </resin:HttpProxy>
      </web-app>
    </host>
  </cluster>
</resin>