Function nic_xstats_display_periodic

dpdk/app/test-pmd/config.c:217–274

}

static void
nic_xstats_display_periodic(portid_t port_id)
{
	struct xstat_display_info *xstats_info;
	uint64_t *prev_values, *curr_values;
	uint64_t diff_value, value_rate;
	struct timespec cur_time;
	uint64_t *ids_supp;
	size_t ids_supp_sz;
	uint64_t diff_ns;
	unsigned int i;
	int rc;

	xstats_info = &ports[port_id].xstats_info;

	ids_supp_sz = xstats_info->ids_supp_sz;
	if (ids_supp_sz == 0)
		return;

	printf("\n");

	ids_supp = xstats_info->ids_supp;
	prev_values = xstats_info->prev_values;
	curr_values = xstats_info->curr_values;

	rc = rte_eth_xstats_get_by_id(port_id, ids_supp, curr_values,
				      ids_supp_sz);
	if (rc != (int)ids_supp_sz) {
		fprintf(stderr,
			"Failed to get values of %zu xstats for port %u - return code %d\n",
			ids_supp_sz, port_id, rc);
		return;
	}

	diff_ns = 0;
	if (clock_gettime(CLOCK_TYPE_ID, &cur_time) == 0) {
		uint64_t ns;

		ns = cur_time.tv_sec * NS_PER_SEC;
		ns += cur_time.tv_nsec;

		if (xstats_info->prev_ns != 0)
			diff_ns = ns - xstats_info->prev_ns;
		xstats_info->prev_ns = ns;
	}

	printf("%-31s%-17s%s\n", " ", "Value", "Rate (since last show)");
	for (i = 0; i < ids_supp_sz; i++) {
		diff_value = (curr_values[i] > prev_values[i]) ?
			     (curr_values[i] - prev_values[i]) : 0;
		prev_values[i] = curr_values[i];
		value_rate = diff_ns > 0 ?
				(double)diff_value / diff_ns * NS_PER_SEC : 0;

		printf("  %-25s%12"PRIu64" %15"PRIu64"\n",
		       xstats_display[i].name, curr_values[i], value_rate);
	}
}