@PostConstruct
	public void init() {
		// Clean up db first.
		doFinish(true);

		this.startRunnable = this::startPeriodically;
		scheduledTaskService.addFixedDelayedScheduledTask(startRunnable, PERFTEST_RUN_FREQUENCY_MILLISECONDS);
		this.finishRunnable = this::finishPeriodically;
		scheduledTaskService.addFixedDelayedScheduledTask(finishRunnable, PERFTEST_RUN_FREQUENCY_MILLISECONDS);

	}
{@link PerfTest} run scheduler.
<p/>
This class is responsible to execute/finish the performance test. The job is
started from {@link #doStart()}  and {@link #doFinish()} method. These
methods are scheduled by Spring Task.

@since 3.0
ngrinder-controller/src/main/java/org/ngrinder/perftest/service/PerfTestRunnable.java