Distributed DDNS performance benchmarks - Adaptive Applications - BlueCat Gateway - 23.2.3

BlueCat Distributed DDNS Administration Guide

Product name
BlueCat Gateway

The following statistics represent tested benchmarks and performance limitations for Distributed DDNS under specific conditions.

All statistics were recorded while testing using the BlueCat Distributed DNS Server (BDDS) model BDDS-50, under the following starting conditions:

  • Zones status: Empty

  • Traffic destination: One of three service nodes

  • Total updates sent: 1.6 million

  • Optimized disk space and memory usage

Statistics were collected using Cisco NetFlow (nfcapd) on a Ubuntu server.

Note: These metrics represent tests on a specific network device (BDDS-50) under ideal lab conditions. Performance on other devices or virtual machines in real-world conditions will differ.
Performance metric Details
Update receiving rate Successfully tested at > 400 updates/second
Behavior on excess updates

If a service node is sent more updates than it can deliver, excess updates are queued and delivered later.

If the service node is sent more updates than it can receive, excess updates are dropped.

RAM usage (Service and Database nodes)

Less than or equal to 20%

Usage never exceeded 3.2 GB.

Used disk space (Database node) 2.4 GB
Used disk space (Service node) 1.4 GB
Highest Network Traffic

6 Mbps (from Database node to Service node).

Traffic used for cache re-synchronization

Zone records and synchronization

Synchronization tests successful up to 500 zones with 1 million records.
Note: BlueCat recommends not exceeding these limits from Distributed DDNS. However, additional records can be managed in BlueCat Address Manager, as long as they are not configured for DDNS through Distributed DDNS.