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Jetty/Tutorial/Statistics

< Jetty‎ | Tutorial
Revision as of 08:12, 13 February 2010 by Michael.webtide.com (Talk | contribs)



Introduction

Jetty allows collecting several types of statistics. This tutorial shows how to configure Jetty to enable collecting statistics, although it is not recommended and it is best to use a JMX agent to select statistics only when needed.

Details

Connector statistics

The following example shows how to turn on connector statistics in jetty.xml.

<Item>
  <New class="org.mortbay.jetty.nio.SelectChannelConnector">
    <Set name="port">8080</Set>
    <Set name="maxIdleTime">30000</Set>
    <Set name="lowResourceMaxIdleTime">3000</Set>
    <Set name="Acceptors">1</Set>
    <Set name="StatsOn">true</Set>
  </New>
</Item>

Request Statistics

To collect request statistics a StatisticsHandler must be configured as one of the handlers of the server. Typically this can be done as the top level handler, but you may choose to configure a statistics handler for just one context by creating a context configuration file. The following jetty.xml fragment shows how to configure a top level statistics handler:

<!-- =========================================================== -->
<!-- Set handler Collection Structure                            -->
<!-- =========================================================== -->
<Set name="handler">
  <New class="org.mortbay.jetty.handler.StatisticsHandler">
    <Set name="handler">
      <New id="handlers" class="org.mortbay.jetty.handler.HandlerCollection">
        <Set name="handlers">
         <Array type="org.mortbay.jetty.Handler">
           <Item><New id="contexts" class="org.mortbay.jetty.handler.ContextHandlerCollection"/></Item>
           <Item><New id="defaultHandler" class="org.mortbay.jetty.handler.DefaultHandler"/></Item>
           <Item><New id="requestLog" class="org.mortbay.jetty.handler.RequestLogHandler"/></Item>
         </Array>
        </Set>
      </New>
    </Set>
  </New>
</Set>

Additional Resources

See Jetty JMX tutorial for instructions on how to configure Jetty JMX integration.