Function test_lpm_perf

dpdk/app/test/test_lpm_perf.c:593–761

}

static int
test_lpm_perf(void)
{
	struct rte_lpm_config config;

	config.max_rules = 2000000;
	config.number_tbl8s = 2048;
	config.flags = 0;
	uint64_t begin, total_time, lpm_used_entries = 0;
	unsigned i, j;
	uint32_t next_hop_add = 0xAA, next_hop_return = 0;
	int status = 0;
	uint64_t cache_line_counter = 0;
	int64_t count = 0;

	rte_srand(rte_rdtsc());

	generate_large_route_rule_table();

	printf("No. routes = %u\n", (unsigned) NUM_ROUTE_ENTRIES);

	print_route_distribution(large_route_table, (uint32_t) NUM_ROUTE_ENTRIES);

	lpm = rte_lpm_create(__func__, SOCKET_ID_ANY, &config);
	TEST_LPM_ASSERT(lpm != NULL);

	/* Measure add. */
	begin = rte_rdtsc();

	for (i = 0; i < NUM_ROUTE_ENTRIES; i++) {
		if (rte_lpm_add(lpm, large_route_table[i].ip,
				large_route_table[i].depth, next_hop_add) == 0)
			status++;
	}
	/* End Timer. */
	total_time = rte_rdtsc() - begin;

	printf("Unique added entries = %d\n", status);
	/* Obtain add statistics. */
	for (i = 0; i < RTE_LPM_TBL24_NUM_ENTRIES; i++) {
		if (lpm->tbl24[i].valid)
			lpm_used_entries++;

		if (i % 32 == 0) {
			if ((uint64_t)count < lpm_used_entries) {
				cache_line_counter++;
				count = lpm_used_entries;
			}
		}
	}

	printf("Used table 24 entries = %u (%g%%)\n",
			(unsigned) lpm_used_entries,
			(lpm_used_entries * 100.0) / RTE_LPM_TBL24_NUM_ENTRIES);
	printf("64 byte Cache entries used = %u (%u bytes)\n",
			(unsigned) cache_line_counter, (unsigned) cache_line_counter * 64);

	printf("Average LPM Add: %g cycles\n",