Bind 9.1.3 stop resolving but is still running.

[Brad Knowles]

At 1:45 AM -0400 9/7/01, Jason Larke wrote:

>  Cache00 is a Netra 1125 with 2 300mhz UltraSparcII CPUs and 2
>  gigs of RAM. I figured BIND 9's multithreading might make it
>  faster than BIND 8, so I ran some quick tests.

	Looking at nameserver performance, I've been playing around with 
the queryperf tool that ships in the contrib/ directory, and doing 
reverse DNS lookups for entire networks, and testing out entire TLDs 
(well, at least those that I can zone transfer, such as .ac).

	I've only started aiming queries at nameservers close to the 
machines operated by my provider, but so far I haven't seen a caching 
nameserver that's done better than about 250 queries per second (and 
that was on the reverse DNS queries -- for the TLDs, I haven't seen 
better than 100 queries per second).


	However, when looking at authoritative answers, I've seen some 
pretty impressive numbers from a.root-servers.net and the nameservers 
for AOL -- 4000-5000 queries per second (65536 queries in something 
like 13 seconds), on real-world servers with real-world load, and 
across WAN connections.


	I'm going to have to do some more testing tomorrow with the .to 
zone (almost 71,000 lines, 67,000 zones, and 33,000 nameservers, as 
of the last time I checked), and trying reverse lookups on the 
various IP addresses listed within.

	Fascinating.

-- 
Brad Knowles, <brad.knowles at skynet.be>

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