BIND 9.2.2 recursive queries lag badly, Bind8 does not
phn at icke-reklam.ipsec.nu
phn at icke-reklam.ipsec.nu
Sat Nov 13 09:54:56 UTC 2004
bind-list at vsfx.com wrote:
> Hello List --
> I tried searching for this in the archives and didn't see anything
> conclusive.
> We are an ISP with caching resolvers running BIND9.2.2 on Solaris 8 tha=
t
> are not behind firewalls. Upon running scripts to test unrelated issue=
s,
> I noticed that any time I queried any of my resolvers for domains that
> have not been cached, the recursive query response times are horrible -=
-
> consistently over 4 seconds. If I clear the cache and run a script tha=
t
> digs over 100 random domains, all of them come back > 4 seconds. Nothi=
ng
> has changed on our resolvers' config in months. Root hint file is up t=
o
> date. Dig +trace or debug isn't showing anything. Tcpdump/snoop shows
> nothing, other than an empty hole when the machine is waiting for a
> response back from any root server. Queries against the boxes locally =
vs.
> queries from another machine make no difference. We have tried boxes t=
hat
> have not been patched in months as well as up-to date machines. All th=
e
> same.
> Here's the options we have:
> options {
> directory "/var/named";
> /*
> *
> */
> max-ncache-ttl 10800;
> transfers-in 25;
> notify no;
> allow-query { CSR; DEV; localhost; };
> recursion yes;
> recursive-clients 100000;
> allow-transfer { none; };
> interface-interval 0;
> cleaning-interval 30;
> blackhole { 10.0.0.0/8; 192.168.0.0/16; };
> pid-file "named.pid";
> };
> Although I would be happy to post more info for your review, my questio=
ns
> are these: Has anyone else noticed this lag in recursion recently? Ca=
n
> anyone on this list try clearing their cache and then running queries f=
or
> random domains and noting the response time?
> Curiously, an old BIND8 box we have does NOT experience this lag, no
> matter what.
> Any insight you may have is appreciated.
> Thanks
> -Erik J
bind-9 starts with end0 queries, if they are not answered a retry=20
without edns is attempted. This is what i understood.
--=20
Peter H=E5kanson =20
IPSec Sverige ( At Gothenburg Riverside )
Sorry about my e-mail address, but i'm trying to keep spam out=
,
remove "icke-reklam" if you feel for mailing me. Thanx.
More information about the bind-users
mailing list