Function perf2_test

dpdk/app/test/test_red.c:1423–1530

* Performance test function to measure enqueue performance when the * queue is empty. This runs performance tests 4, 5 and 6 */

 * queue is empty. This runs performance tests 4, 5 and 6
 */
static enum test_result perf2_test(struct test_config *tcfg)
{
	enum test_result result = PASS;
	struct rdtsc_prof prof = {0, 0, 0, 0, 0.0, NULL};
	uint32_t total = 0;
	uint32_t i = 0;

	printf("%s", tcfg->msg);

	rdtsc_prof_init(&prof, "enqueue");

	if (test_rte_red_init(tcfg) != PASS) {
		result = FAIL;
		goto out;
	}

	printf("%s", tcfg->htxt);

	for (i = 0; i < tcfg->tvar->num_iterations; i++) {
		uint32_t count = 0;
		uint64_t ts = 0;
		double avg_before = 0;
		int ret = 0;

		/**
		 * set average queue size to target level
		 */
		*tcfg->tqueue->q = *tcfg->tlevel;
		count = (*tcfg->tqueue->rdata).count;

		/**
		 * initialize the rte_red run time data structure
		 */
		rte_red_rt_data_init(tcfg->tqueue->rdata);
		(*tcfg->tqueue->rdata).count = count;

		/**
		 * set the queue average
		 */
		rte_red_set_avg_int(tcfg->tconfig->rconfig, tcfg->tqueue->rdata, *tcfg->tlevel);
		avg_before = rte_red_get_avg_float(tcfg->tconfig->rconfig, tcfg->tqueue->rdata);
		if ((avg_before < *tcfg->tlevel) || (avg_before > *tcfg->tlevel)) {
			result = FAIL;
			goto out;
		}

		/**
		 * empty the queue
		 */
		*tcfg->tqueue->q = 0;
		rte_red_mark_queue_empty(tcfg->tqueue->rdata, get_port_ts());

		/**
		 * wait for specified period of time
		 */
		rte_delay_us(tcfg->tvar->wait_usec);

		/**