tsung config for Phoenix stress test

dm.xml

<?xml version="1.0"?>
<!DOCTYPE tsung SYSTEM "/usr/local/share/tsung/tsung-1.0.dtd">
<tsung loglevel="info" version="1.0">
  <clients>
    <client host="localhost" use_controller_vm="true" maxusers="5000" />
  </clients>

  <servers>
    <server host="serverhost" port="80" type="tcp" />
  </servers>

  <load>
    <arrivalphase phase="1" duration="1000" unit="second">
      <users maxnumber="3000" arrivalrate="300" unit="second" />
    </arrivalphase>
  </load>

  <options>
    <option name="ports_range" min="1025" max="65535"/>
  </options>

  <sessions>
    <session name="http-login" probability="100" type="ts_http">
      <request subst="true">
        <dyn_variable name="token" jsonpath="token" />
        <dyn_variable name="user_id" jsonpath="id" />
        <http url="/api/sessions" method="POST" version="1.1" contents="email=user%%ts_user_server:get_unique_id%%@stress.test">
        </http>
      </request>

      <change_type new_type="ts_websocket" host="serverhost" port="80" server_type="tcp" bidi="true"/>

      <request subst="true">
        <websocket type="connect" path="/socket/websocket?token=%%_token%%"></websocket>
      </request>

      <request subst="true">
        <match do="log" when="nomatch">ok</match>
        <websocket type="message">{"topic":"event:general:%%_user_id%%", "event":"phx_join", "payload": {}, "ref":"1"}</websocket>
      </request>

      <for var="i" from="1" to="1000" incr="1">
        <thinktime value="30" />
      </for>
    </session>
  </sessions>
</tsung>