public void fireSample(long sampleInterval, long period) {
		m_intervalStatistics.setValue(m_periodIndex, sampleInterval);
		m_cumulativeStatistics.setValue(m_periodIndex, period);
		m_listeners.apply(new ListenerSupport.Informer<SampleListener>() {
			public void inform(SampleListener l) {
				l.update(m_intervalStatistics, m_cumulativeStatistics);
			}
		});
		m_lastSampleStatistics = m_intervalStatistics;

		// We create new statistics each time to ensure that
		// m_lastSampleStatistics is always valid and fixed.
	}
Fire sampling.

@param sampleInterval	sampling interval
@param period			period
ngrinder-core/src/main/java/net/grinder/console/model/SampleAccumulatorEx.java