Evan Hunt wrote last July 13:
-- People who operate big authoritative name servers (particularly with
large numbers of small zones, e.g., for domain hosting and parking),
and have had trouble with slow startup, may find this information
useful:
http://www.isc.org/community/blog/201107/major-improvement-bind-9-startup-performance
I ran some tests yesterday on an Ubuntu Hardy virtual machine.
I was using 9.7.3-P3 and 9.7.4. There is nothing running
on the box except BIND and the Hardy operating system.
The DNS configuration file has a handful of test zones.
It also has our list of 202,818 spyware/malware zones,
each using the same zone file, which has one NS record and
@ IN A a.b.c.d
* IN A a.b.c.d
The shutdown time for 9.7.3-P3 was 1:27:11 (1.5 hours).
The timing was from the "./rndc stop" until the "exiting" message.
I did three shutdowns of 9.7.4 with the default
BIND9_ZONE_TASKS_HINT=8
value. The shutdown times were 7:17, 7:07, and 7:35.
The shutdown time improved DRAMATICALLY.
I did three start-ups of 9.7.4:
BZTH Time
------- ----
default 4:57
default 5:04
1020 5:19
I did not see any improvement in start-up time. The
last start-up did produce the message
Using 1020 tasks for zone loading
The first two start-ups produced the message
Using 101 tasks for zone loading
The CHANGES file says that the default is 8.
I need to run some more tests.
----------------------------------------------------------------------
Barry S. Finkel
Computing and Information Systems Division
Argonne National Laboratory Phone: +1 (630) 252-7277
9700 South Cass Avenue Facsimile:+1 (630) 252-4601
Building 240, Room 5.B.8 Internet: bsfin...@anl.gov
Argonne, IL 60439-4828 IBMMAIL: I1004994
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