Hi!

I am having trouble on OpenBSD v. 5.1 using NSD nameserver.

When slave NSD name server receives zone update and reloads it into its database high and sustained user load (about 1-2) is generated on cpu depending on hardware from 3 minutes to 10 minutes. Also this kind on load is observed when doing nsdc patch. It seems to happen only when zone has many RRs, say 100k NS lines; using NSD with OpenBSD v. 4.8 from packages does not have this issue, also not 5.1-current, but 5.1 does; i have tried and got similar results on amd64 and i386, happens on
both; Normally this kind of reload and patch takes several seconds only.

My nsd conf is as following on the slave

   server:
   hide-version: yes
   ip-address: 10.193.0.53
   ip-address: 192.168.1.211
   ip-address: 127.0.0.1
   chroot: /var/nsd
   logfile: /var/log/nsd.log

   zone:
   name: "bar"
   zonefile: "bar.zone"

   allow-notify: 127.0.0.1 NOKEY
   allow-notify: 192.80.102.35 NOKEY
   request-xfr: AXFR 192.80.109.158 NOKEY
   provide-xfr: 10.193.0.53 NOKEY
   provide-xfr: 192.168.10.10 NOKEY
   allow-axfr-fallback: "yes"

and master zone for bar. is like

   $TTL 86400
   @    IN      SOA     ns.foo.bar. hostmaster.foo.bar. (
                        2012052308 14400 7200 3600000 10800 )
   IN      NS      ns.foo.bar.

   aa000 IN NS aa000.bar.foo.
   aa001 IN NS aa001.bar.foo.

   ...
   lc994 IN NS lc994.bar.foo.

I would be very thankful if somebody could have a look at it and confirm this behaviour. And if really nsd on 5.1 is to blame may i add that patch would be very much welcomed! :)


Best regards,

Imre

PS I used first time sendbug utility to ask help on this, but i am not sure i got it all right but at least i can say i succeeded to send out an email

May 23 13:16:21 post-relay postfix/smtp[11753]: A1E707E5F7: to=<[email protected]>, relay=shear.ucar.edu[192.43.244.163]:25, delay=3.8, delays=0.01/0.06/2.3/1.4, dsn=2.0.0, status=sent (250 2.0.0 q4NAGI62032168 Message accepted for delivery)

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