Lib/OS Issue

[Mark Andrews]

> I have two different servers running two different versions of the BIND 9
> software and the newest code using the newest library seems to have an
> issue.  When the server is first started, the first request will
> sometime take almost 5000 msecs to get a response.  On the older server
> and library, the response times consistent and under 1600 msecs at worst.
> 
> I realize that subsequent requests are cached, however since there might
> be an issue, I wanted to make sure I reported it since I can duplicate
> the issue reliably.
> 
> The Older Servers:
> ------------------
> >From inside our network
> < 1600 msec dig on www.yahoo.com
> < 0800 msec dig on www.yuppie.org
> < 0600 msec dig on www.test.com
> 
> >From edge of our network
> < 0800 msec dig on www.yahoo.com
> < 0600 msec dig on www.yuppie.org
> < 0300 msec dig on www.test.com
> 
> The four well functioning Debian servers are running core :
> 
> Linux ns0001.public.unt.edu 2.4.26-1-386 #1 Thu Jul 22 12:46:23 JST 2004
> i686 GNU/Linux
> 
> and has library:
> 
> lrwxrwxrwx  1 root root      25 Jan 18  2005 /usr/lib/libdns.so.11 ->
> /usr/lib/libdns.so.11.1.3
> -r-xr-xr-x  1 root sys  1246960 Apr  7 14:25 /usr/lib/libdns.so.11.1.3
> 
> 
> The Newer Servers:
> ------------------
> >From inside our network
> < 4600 msec dig on www.yahoo.com
> < 2800 msec dig on www.yuppie.org
> < 2600 msec dig on www.test.com
> 
> >From edge of our network
> < 4200 msec dig on www.yahoo.com
> < 2200 msec dig on www.yuppie.org
> < 2100 msec dig on www.test.com
> 
> 
> The eight poorly functioning Debian servers are running core :
> 
> Linux ddns0002.public.unt.edu 2.6.8-2-386 #1 Tue Aug 16 12:46:35 UTC
> 2005 i686 GNU/Linux
> 
> and has library:
> 
> lrwxrwxrwx  1 root root      16 2006-09-04 17:58 /usr/lib/libdns.so.16
> -> libdns.so.16.0.0
> -r-xr-xr-x  1 root sys  1038664 2006-09-04 18:03
> /usr/lib/libdns.so.16.0.0
> 
> 
> If anyone needs or wants further information, please let me know.
> 
> Blair Copeland                                        Ph# (940) 565-4180
> Communications Manager                                FAX (940) 565-4060
> Network Operations and Services	                      TTY (800) RELAY T
> X
> Data Communications                                   noc.unt.edu/~copeland
> Computing and Information Technology Center           copeland at unt.edu

	Firstly which BIND versions do these correspond too?
	Secondly what level of IPv6 support do you have on the
	two boxes?
	Thirdly what firewalls are in the way?
	
--
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-- 
Mark Andrews, ISC
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