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Subject: What do you think about my LevelDB /Zookeeper Setup?
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Hello ActiveMQ users,

i want to use ActiveMQ;

  * with activemq 5.11.1
  * with LevelDB/Zookeeper
  * on three pyhsical nodes
  * for receiving and sending ~10 Messages per second
  * a maximum number of 4 million messages (100 KB per message)
  * with 1GB maxheap
  * with Java 1.7.075


I attached my configuration!

Are there some users which use a production scenario like this?
Do you recommend this?
Do you have suggestions for the configuration?
How can i effectively prevent heap memory problems (poor performance is
o.k.)?

My configuration looks like this:

activemq.xml
------------------------------------------------------------------------
<?xml version=3D"1.0" encoding=3D"UTF-8"?><beans
xmlns=3D"http://www.springframework.org/schema/beans"
xmlns:xsi=3D"http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation=3D"http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd =20
http://activemq.apache.org/schema/core
http://activemq.apache.org/schema/core/activemq-core.xsd">

    <!-- Allows us to use system properties as variables in this
configuration file -->
    <bean
class=3D"org.springframework.beans.factory.config.PropertyPlaceholderConf=
igurer">
        <property name=3D"locations">
            <value>file:${activemq.conf}/credentials.properties</value>
        </property>
    </bean>

    <!--
        The <broker> element is used to configure the ActiveMQ broker.
    -->
    <broker xmlns=3D"http://activemq.apache.org/schema/core"
brokerName=3D"brn" dataDirectory=3D"${activemq.data}">

        <destinationPolicy>
            <policyMap>
              <policyEntries>
                <!-- QUEUE -->
                <policyEntry queue=3D">" producerFlowControl=3D"true"
memoryLimit=3D"100mb" maxPageSize=3D"200" maxBrowsePageSize=3D"100"
lazyDispatch=3D"true">
                  <deadLetterStrategy>
                        <individualDeadLetterStrategy queueSuffix=3D".DLQ=
"
useQueueForQueueMessages=3D"true" />
                  </deadLetterStrategy>
                  <pendingMessageLimitStrategy>
                        <constantPendingMessageLimitStrategy limit=3D"100=
"/>
                  </pendingMessageLimitStrategy>
               </policyEntry>
               <!-- TOPIC -->
               <policyEntry topic =3D ">" producerFlowControl =3D "true"
memoryLimit =3D "64mb">
                  <deadLetterStrategy>
                    <individualDeadLetterStrategy  topicSuffix=3D".DLQ" /=
>
                  </deadLetterStrategy>
                  <pendingSubscriberPolicy>
                     <vmCursor/>
                  </pendingSubscriberPolicy>
               </policyEntry>
              </policyEntries>
            </policyMap>
        </destinationPolicy>


        <!--
            The managementContext is used to configure how ActiveMQ is
exposed in
            JMX. By default, ActiveMQ uses the MBean server that is
started by
            the JVM. For more information, see:

            http://activemq.apache.org/jmx.html
        -->
      <managementContext>
            <managementContext createConnector=3D"true"/>
      </managementContext>

      <persistenceAdapter>
                <replicatedLevelDB
                    directory=3D"/data/apache-activemq/activemq-data/"
                    replicas=3D"3"
                    weight=3D"20"
                    bind=3D"tcp://0.0.0.0:0"
                  =20
zkAddress=3D"10.228.54.20:2181,10.228.54.24:2181,10.228.54.25:2181"
                    zkPath=3D"/active-mq/leveldb-stores"
            hostname=3D"10.228.54.20"
            sync=3D"local_disk"
                    indexCompression=3D"snappy"
            logCompression=3D"snappy"
      />
      </persistenceAdapter>

          <!--
            The systemUsage controls the maximum amount of space the
broker will
            use before disabling caching and/or slowing down producers.
For more information, see:
            http://activemq.apache.org/producer-flow-control.html
          -->
          <systemUsage>
            <systemUsage>
                <memoryUsage>
                    <memoryUsage percentOfJvmHeap=3D"70"/>
                </memoryUsage>
                <storeUsage>
                    <storeUsage limit=3D"10 gb"/>
                </storeUsage>
                <tempUsage>
                    <tempUsage limit=3D"1 gb"/>
                </tempUsage>
            </systemUsage>
        </systemUsage>

        <!--
            The transport connectors expose ActiveMQ over a given
protocol to
            clients and other brokers. For more information, see:

            http://activemq.apache.org/configuring-transports.html
        -->
        <transportConnectors>
            <!-- DOS protection, limit concurrent connections to 1000
and frame size to 100MB -->
            <transportConnector name=3D"openwire"
uri=3D"nio://0.0.0.0:61616?maximumConnections=3D1000&amp;wireFormat.maxFr=
ameSize=3D104857600"/>
            <transportConnector name=3D"amqp"
uri=3D"amqp://0.0.0.0:5672?maximumConnections=3D1000&amp;wireFormat.maxFr=
ameSize=3D104857600"/>
            <transportConnector name=3D"stomp"
uri=3D"stomp://0.0.0.0:61613?maximumConnections=3D1000&amp;wireFormat.max=
FrameSize=3D104857600"/>
            <transportConnector name=3D"mqtt"
uri=3D"mqtt://0.0.0.0:1883?maximumConnections=3D1000&amp;wireFormat.maxFr=
ameSize=3D104857600"/>
            <transportConnector name=3D"ws"
uri=3D"ws://0.0.0.0:61614?maximumConnections=3D1000&amp;wireFormat.maxFra=
meSize=3D104857600"/>
        </transportConnectors>

        <!-- destroy the spring context on shutdown to stop jetty -->
        <shutdownHooks>
            <bean xmlns=3D"http://www.springframework.org/schema/beans"
class=3D"org.apache.activemq.hooks.SpringContextHook"/>
        </shutdownHooks>

    </broker>

    <!--
        Enable web consoles, REST and Ajax APIs and demos
        The web consoles requires by default login, you can disable this
in the jetty.xml file

        Take a look at ${ACTIVEMQ_HOME}/conf/jetty.xml for more details
    -->
    <import resource=3D"jetty.xml"/>

</beans>
------------------------------------------------------------------------

zoo.cfg
------------------------------------------------------------------------

# The number of milliseconds of each tick
tickTime=3D2000
# The number of ticks that the initial
# synchronization phase can take
initLimit=3D10
# The number of ticks that can pass between
# sending a request and getting an acknowledgement
syncLimit=3D5
# the directory where the snapshot is stored.
# do not use /tmp for storage, /tmp here is just
# example sakes.
dataDir=3D/data/zookeeper/data
# the port at which the clients will connect
clientPort=3D2181

server.1=3Dlnxp-4571.srv.tacatucafoobar.net:2888:3888
server.2=3Dlnxp-4575.srv.tacatucafoobar.net:2888:3888
server.3=3Dlnxp-4576.srv.tacatucafoobar.net:2888:3888


Regards
Marc


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