The primary objective of the benchmarking is to compare authoritative name server implementations in different environments. Many things affect the performance from NIC manufacturer, drivers to zone contents. Because of this, we made the project open-source including the data sets, tools to build new ones and examples.

You can read or download the sources and data at our dns-benchmarking project page.

Response rate benchmark

The test is loosely based on the proven DISTEL testlab setup (presentation, p.28), that is used by the NLnet Labs to carry out DNS benchmarks. The difference is we use multiple query sources to fully saturate the server box (2x Intel Xeon E5-2630V3 (HT enabled), 64 GiB RAM).

Open-source tools like tcpreplay or tcpdump are used to generate and capture traffic. This is not a selfpaced test like dnsperf and more accurately simulates an attack or a surge in traffic.

Notes & remarks

  • Explicit CFLAGS="-O2 -g -DNDEBUG"
  • Enabled SO_REUSEPORT if supported
  • BIND compiled with --enable-threads
  • PowerDNS with BIND zone file backend and cache disabled
  • The number of threads/processes is the same as the number of cores
  • Flushed filesystem and page cache before each test run