Benchmarking DNS servers with Java

Mon, 26 Sep 2011 12:33:28 +0000

I’m currently in the process of moving our DNS over to another provider and I was curious as to whether the old or new provider offers faster lookups. dig shows query times, but I didn’t want to just run that over and over. I decided to write something to do this, in Java since I like Java. I found this post, which has the meat of the work done already. I also read some of Sun’s JNDI/DNS lookup info, which was pretty dense. All I want to do is specify the name server’s IP and do the lookup. I don’t even really care about the result, just how long the query takes.

Perl script to calculate DNS queries per second in BIND (named)

Tue, 07 Dec 2010 18:53:43 +0000

I’m pricing out DNS providers and was asked what our current queries-per-second currently are. Sadly I had no idea. After lots of Googling I decided there was really no good way to get this information so I decided to parse the logfile myself. First, I turned on logging with timestamp in named.conf:

logging
{
...
 # Query logging 2010-12-07
 channel query-log {
 file "data/queries.log" versions 3 size 10m;
 print-time yes;
 };
 category queries { query-log; };
};
options
{
...
 # Query logging 2010-12-07
 querylog yes;

};

Query on Evan Hoffman

Benchmarking DNS servers with Java

Perl script to calculate DNS queries per second in BIND (named)