To:
"Eric A. Hall" <ehall@ehsco.com>
Cc:
dnsop@cafax.se
From:
Shane Kerr <shane@ripe.net>
Date:
Fri, 18 Aug 2000 13:42:41 +0200
In-reply-to:
Your message of Fri, 18 Aug 2000 04:10:58 PDT. <399D19C1.7F62E835@ehsco.com>
Sender:
owner-dnsop@cafax.se
Subject:
Re: Statistics on IN-ADDR.ARPA hosts
>
> > 350, 12.25s -> Server failure (8% do NOT have a working IN-ADDR
> > server).
>
> Why so long. It shouldn't take 12 seconds for a server to figure out that
> it doesn't have a table available for a zone. More likely the server
> thinks that somebody else has the data and it's trying to contact that
> other somebody? This could be a result of aliased PTRs, connectivity
> problems, and other issues. In all cases the delegation is messed.
My guess is that its a zone delegated incorrectly. I.e. the network
administrator hasn't bothered to let his DNS upstream know about his
server.
> Is this average time? Got a distribution?
This is the average time. A distribution, queries on the Y axis,
seconds on the X axis, of this data set:
121.0 #
116.0 #
110.9 #
105.9 #
100.8 #
95.8 #
90.7 #
85.7 #
80.7 #
75.6 #
70.6 #
65.5 #
60.5 #
55.5 ##
50.4 ##
45.4 ##
40.3 ##
35.3 ## #
30.2 ### #
25.2 ### #
20.2 ### # #
15.1 ##### # #
10.1 ###### # #
5.0 ####### # #
-------------------------------------------------------------
0 40 80
Nothing too surprising here.
> Were queries sent with RD?
I'm afraid I don't know what RD is. Too damn much jargon on the
Internet.
Shane