Function test_average_table_utilization

dpdk/app/test/test_efd.c:332–391

* Test to see the average table utilization (entries added/max entries) * before hitting a random entry that cannot be added */

 * before hitting a random entry that cannot be added
 */
static int test_average_table_utilization(void)
{
	struct rte_efd_table *handle = NULL;
	uint32_t num_rules_in = TABLE_SIZE;
	uint8_t simple_key[EFD_TEST_KEY_LEN];
	unsigned int i, j;
	unsigned int added_keys, average_keys_added = 0;

	printf("Evaluating table utilization and correctness, please wait\n");
	fflush(stdout);

	for (j = 0; j < ITERATIONS; j++) {
		handle = rte_efd_create("test_efd", num_rules_in,
				EFD_TEST_KEY_LEN, efd_get_all_sockets_bitmask(),
				test_socket_id);
		if (handle == NULL) {
			printf("efd table creation failed\n");
			return -1;
		}

		unsigned int succeeded = 0;
		unsigned int lost_keys = 0;

		/* Add random entries until key cannot be added */
		for (added_keys = 0; added_keys < num_rules_in; added_keys++) {

			for (i = 0; i < EFD_TEST_KEY_LEN; i++)
				simple_key[i] = rte_rand() & 0xFF;

			efd_value_t val = simple_key[0];

			if (rte_efd_update(handle, test_socket_id, simple_key,
						val))
				break; /* continue;*/
			if (rte_efd_lookup(handle, test_socket_id, simple_key)
					!= val)
				lost_keys++;
			else
				succeeded++;
		}

		average_keys_added += succeeded;

		/* Reset the table */
		rte_efd_free(handle);

		/* Print progress on operations */
		printf("Added %10u	Succeeded %10u	Lost %10u\n",
				added_keys, succeeded, lost_keys);
		fflush(stdout);
	}

	average_keys_added /= ITERATIONS;

	printf("\nAverage table utilization = %.2f%% (%u/%u)\n",
			((double) average_keys_added / num_rules_in * 100),
			average_keys_added, num_rules_in);