code: public void setEnableStatistics( final boolean enableStatistics ) {
          final boolean oldEnableStatistics = _enableStatistics;
          _enableStatistics = enableStatistics;
          if ( oldEnableStatistics != enableStatistics && _manager.isInitialized() ) {
              _log.info( "Changed enableStatistics from " + oldEnableStatistics + " to " + enableStatistics + "." +
              " Reloading configuration..." );
              reloadMemcachedConfig( _memcachedNodes, _failoverNodes );
          }
      }
docs: Specifies if statistics (like number of requests with/without session) shall be
  gathered. Default value of this property is <code>true</code>.
  <p>
  Statistics will be available via jmx and the Manager mbean (
  e.g. in the jconsole mbean tab open the attributes node of the
  <em>Catalina/Manager/&lt;context-path&gt;/&lt;host name&gt;</em>
  mbean and check for <em>msmStat*</em> values.
  </p>
  
  @param enableStatistics <code>true</code> if statistics shall be gathered.