Hi everybody - with the ongoing UDP reflection attacks and the rise of
DNSSEC, DNS over TCP/IP is getting ever more important. Up til now, it was
hard to benchmark TCP/IP performance of nameservers.
Because of a user's query, we've made a very simple tool to do just that.
It is not very sophisticated, but it does the job. We've learned that
PowerDNS does around 20000 TCP/IP queries/second out of the box on a few
years old server, a number we did not previously know.
>From the manpage:
dnstcpbench reads DNS queries from standard input and sends them out
in parallel to a remote nameserver. By default TCP/IP is used, but
optionally, UDP is tried first, which allows for the benchmarking of
TCP/IP fallback.
The input format is one query per line: qname single-space qtype. An
example:
www.powerdns.com ANY
powerdns.com MX
Manpage: https://raw.github.com/PowerDNS/pdns/master/pdns/docs/dnstcpbench.1.txt
The tool is included in our GitHub master branch.
Here are the build depencies for Debian 7:
apt-get install autoconf automake bison flex g++ libboost-all-dev
libtool
make pkg-config ragel zlib1g-dev
To compile:
$ git clone https://github.com/PowerDNS/pdns.git
$ cd pdns
$ ./bootstrap
$ ./configure --with-modules="" --without-lua
$ cd pdns
$ make dnstcpbench
Good luck & please let us know your thoughts & suggestions!
Bert
--
PowerDNS Website: http://www.powerdns.com/
Contact us by phone on +31-15-7850372
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