Bind9 vs. Bind8 latency
Kevin Darcy
kcd at daimlerchrysler.com
Wed Sep 21 22:17:21 UTC 2005
Jeff Wark wrote:
>I have recently been switching our name servers over to bind9 on debian Sarge from bind8 on
>Debian woody.
>
>I like the idea of running the 9 series of bind for security reasons and having the option
>of views [once I get used to it].
>
>There does seem to be a problem with my bind9 configuration and I'm not sure where to start
>looking. When I do a host lookup on the bind8 server for a host I have not already cached
>the response comes back almost immediately but when I do it on a bind9 server it can take
>several seconds most of the time. Once I have looked a host up once it answers quickly for
>subsequent queries.
>
>Basically initial queries on bind9 seem very slow compared to the older bind8. Any ideas as
>to why this might be? Both setups are fairly generic with the only changes to the configs
>being the zones that they are authoritative for [same on each server].
>
Maybe your firewall is choking on EDNS probes? A tcpdump might be useful.
- Kevin
More information about the bind-users
mailing list