Nominum has rolled out probably the world's highest performance DNS server called Authoritative Name Server (ANS). A test was conducted to compare the performance of ANS with Bind 9.3.0 using same hardware platform :
OS : Red Hat Enterprise Linux 3.0
CPU : Intel XEON 2.4 GHz processor
Memory : 2 GB RAM
HD : 160 GB Raid 5 Hard disk
NIC :Gigabit Ethernet Interface.
Bind 9.3.0 failed to load 50 million records. When the records were reduced to 10 million records, it took 150 seconds to load them to memory.
With 200M records loaded, ANS started in less than 1 second, answered 45,135 queries per second with an average latency of 0.0016 seconds.
Nominum ANS is also designed to support update of zone records on the fly, that is to say, no need to shutdown and restart the name daemon.
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