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From Hermes Flying <flyingher...@yahoo.com>
Subject Fw: Can not understand how maxThreads of Connectors works
Date Mon, 21 Jan 2013 07:07:11 GMT

Hi,
Is there any update on this? I don't see any problem setting maxThreads=0

Thank you


----- Forwarded Message -----
From: Hermes Flying <flyinghermes@yahoo.com>
To: Tomcat Users List <users@tomcat.apache.org> 
Sent: Friday, January 18, 2013 8:55 AM
Subject: Re: Can not understand how maxThreads of Connectors works
 

Hi Chris,
Tried with this simple server.xml and maxThreads=0 but I did not see any kind of errors.Attached
the catalina logs

<?xml version='1.0' encoding='utf-8'?>
<Server port="8005" shutdown="SHUTDOWN">

  <!--APR library loader. Documentation at /docs/apr.html -->
  <Listener className="org.apache.catalina.core.AprLifecycleListener" SSLEngine="on" />
  <!--Initialize Jasper prior to webapps are loaded. Documentation at /docs/jasper-howto.html
-->
  <Listener className="org.apache.catalina.core.JasperListener" />
  <!-- Prevent memory leaks due to use of particular java/javax APIs-->
  <Listener className="org.apache.catalina.core.JreMemoryLeakPreventionListener" />
  <!-- JMX Support for the Tomcat server.
 Documentation at /docs/non-existent.html -->
  <Listener className="org.apache.catalina.mbeans.ServerLifecycleListener" />
  <Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener" />

  <!-- Global JNDI resources
       Documentation at /docs/jndi-resources-howto.html
  -->
  <GlobalNamingResources>
    <!-- Editable user database that can also be used by
         UserDatabaseRealm to authenticate users
    -->
    <Resource name="UserDatabase" auth="Container"
              type="org.apache.catalina.UserDatabase"
              description="User database that can be updated and
 saved"
              factory="org.apache.catalina.users.MemoryUserDatabaseFactory"
              pathname="conf/tomcat-users.xml" />
  </GlobalNamingResources>

  <!-- A "Service" is a collection of one or more "Connectors" that share
       a single "Container" Note:  A "Service" is not itself a "Container", 
       so you may not define subcomponents such as "Valves" at this level.
       Documentation at /docs/config/service.html
   -->
  <Service name="Catalina">
  
    <!--The connectors can use a shared executor, you can define one or more named thread
pools-->
    <!--
   
 <Executor name="tomcatThreadPool" namePrefix="catalina-exec-" 
        maxThreads="150" minSpareThreads="4"/>
    -->
    
    
    <!-- A "Connector" represents an endpoint by which requests are received
         and responses are returned. Documentation at :
         Java HTTP Connector: /docs/config/http.html (blocking & non-blocking)
         Java AJP  Connector: /docs/config/ajp.html
         APR (HTTP/AJP) Connector: /docs/apr.html
         Define a non-SSL HTTP/1.1 Connector on port 8080
    -->
    <Connector port="8080" maxThreads="0" acceptCount="1"
 protocol="HTTP/1.1" 
               connectionTimeout="20000" 
               redirectPort="8443" />

    <!-- Define an AJP 1.3 Connector on port 8009 -->
    <Connector port="8009" protocol="AJP/1.3" redirectPort="8443" />


    <!-- An Engine represents the entry point (within Catalina) that processes
         every request.  The Engine implementation for Tomcat stand alone
         analyzes the HTTP headers included with the request, and passes them
         on to the appropriate Host (virtual host).
         Documentation at /docs/config/engine.html
 -->

    <!-- You should set jvmRoute to support load-balancing via AJP ie :
    <Engine name="Catalina" defaultHost="localhost" jvmRoute="jvm1">        

    --> 
    <Engine name="Catalina" defaultHost="localhost">


      <!-- This Realm uses the UserDatabase configured in the global JNDI
           resources under the key "UserDatabase".  Any edits
           that are performed against this UserDatabase are immediately
           available for use by the Realm.  -->
      <Realm
 className="org.apache.catalina.realm.UserDatabaseRealm"
             resourceName="UserDatabase"/>

      <!-- Define the default virtual host
           Note: XML Schema validation will not work with Xerces 2.2.
       -->
      <Host name="localhost"  appBase="webapps"
            unpackWARs="true" autoDeploy="true"
            xmlValidation="false" xmlNamespaceAware="false">


      </Host>
    </Engine>
  </Service>
</Server>







________________________________
 From: Christopher Schultz <chris@christopherschultz.net>
To: Tomcat Users List <users@tomcat.apache.org> 
Sent: Thursday, January 17, 2013 6:57 PM
Subject: Re: Can not understand how maxThreads of Connectors works
 
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Hash: SHA256

André,

On 1/17/13 3:32 AM, André Warnier wrote:
> Quite a few messages ago, I asked the OP if he could copy/paste
> his server.xml.

Yes. Getting information from the OP seems to be difficult.

> The reason was that if his config uses an Executor, then I believe
> the Threads settings in the Connectors don't really matter, do they
> ?

Correct: setting executor="someExecutor" means that any
executor-related settings on the <Connector> will be ignored in favor
of those set in the <Connector>.

- -chris
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