StaticWiretap action performance issue in JBoss ESB

Issue

• We are using org.jboss.soa.esb.actions.StaticWiretap for routing to another service in our application.
• But we are getting a performance issue. Here is part of jboss-esb.xml:

  <service category="MyCategory" name="ServiceA" invmScope="GLOBAL" ...>
    <property name="maxThreads" value="${esb.thread.count}"/>
    <actions mep="OneWay">
      ...
      <action class="org.jboss.soa.esb.actions.StaticWiretap" name="Route">
        <property name="destinations">
          <route-to service-category="MyCategory" service-name="ServiceB"/>
        </property>
      </action>
    </actions>
  </service>
  <service category="MyCategory" name="ServiceB" invmScope="GLOBAL" ...>
    <actions mep="RequestResponse">
      ...
    </actions>
  </service>

• From the ServiceA to ServiceB there is a considerably 1-2 seconds gap and this gap increases with increase in number parallel users.