Function fbk_hash_perf_test

dpdk/app/test/test_hash_perf.c:649–724

#define ENTRIES (1 << 15)	/* How many entries. */

static int
fbk_hash_perf_test(void)
{
	struct rte_fbk_hash_params params = {
		.name = "fbk_hash_test",
		.entries = ENTRIES,
		.entries_per_bucket = 4,
		.socket_id = rte_socket_id(),
	};
	struct rte_fbk_hash_table *handle = NULL;
	uint32_t *keys = NULL;
	unsigned indexes[TEST_SIZE];
	uint64_t lookup_time = 0;
	unsigned added = 0;
	unsigned value = 0;
	uint32_t key;
	uint16_t val;
	unsigned i, j;

	handle = rte_fbk_hash_create(&params);
	if (handle == NULL) {
		printf("Error creating table\n");
		return -1;
	}

	keys = rte_zmalloc(NULL, ENTRIES * sizeof(*keys), 0);
	if (keys == NULL) {
		printf("fbk hash: memory allocation for key store failed\n");
		return -1;
	}

	/* Generate random keys and values. */
	for (i = 0; i < ENTRIES; i++) {
		key = (uint32_t)rte_rand();
		key = ((uint64_t)key << 32) | (uint64_t)rte_rand();
		val = (uint16_t)rte_rand();

		if (rte_fbk_hash_add_key(handle, key, val) == 0) {
			keys[added] = key;
			added++;
		}
		if (added > (LOAD_FACTOR * ENTRIES))
			break;
	}

	for (i = 0; i < TEST_ITERATIONS; i++) {
		uint64_t begin;
		uint64_t end;

		/* Generate random indexes into keys[] array. */
		for (j = 0; j < TEST_SIZE; j++)
			indexes[j] = rte_rand() % added;

		begin = rte_rdtsc();
		/* Do lookups */
		for (j = 0; j < TEST_SIZE; j++)
			value += rte_fbk_hash_lookup(handle, keys[indexes[j]]);