[Pdns-users] PDNS slow

Alexx Vella alexxvella at gmail.com
Mon Apr 28 15:03:10 UTC 2008


Hi :-)


I installed pdns-static-2.9.21-1.i386.rpm on RHEL4 (2.6.9-34.0.1.ELsmp #1
SMP Wed May 17 17:05:24 EDT 2006 i686 i686 i386 GNU/Linux) together with the
test.com sample found on powerdns.com.

When I run /etc/init.d/powerdns monitor, sometimes it runs:

> Apr 28 14:57:09 gmysql Connection succesful
> Apr 28 14:57:09 About to create 3 backend threads for UDP
> % Apr 28 14:57:09 gmysql Connection succesful
> Apr 28 14:57:10 gmysql Connection succesful
> Apr 28 14:57:10 gmysql Connection succesful
> Apr 28 14:57:10 Done launching threads, ready to distribute questions
>

And sometimes it crashes on sig11:

> % Apr 28 14:56:56 Got a signal 11, attempting to print trace:
> Apr 28 14:56:56 [0x80cde64]
> Apr 28 14:56:56 [0x829b5a8]
>

When it runs, sometimes it answers immediately, sometimes after seconds:

> [x at x ~]$ time host test.com 127.0.0.1
> Using domain server:
> Name: 127.0.0.1
> Address: 127.0.0.1#53
> Aliases:
>
> test.com has address 199.198.197.196
>
> real    0m5.064s
> user    0m0.002s
> sys     0m0.003s
>


And sometimes never:

> [x at x ~]$ time host test.com 127.0.0.1
> ;; connection timed out; no servers could be reached
>
> real    0m10.045s
> user    0m0.002s
> sys     0m0.004s
> [x at x ~]$
>

I found some things about CS, but the server is not that busy:

>  2  0    144 870888  29396 773224    0    0     0     0 1199  4035 39  3
> 58  0
>  1  0    144 871144  29396 773224    0    0     0     0 1147  3332 18  2
> 80  0
>


Since pdns seems to be able to run very well, so any suggestions what I can
do about this?


Thanks
Alexx
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