[nsd-users] nsd 3.2.7-1 statistics signalling

Matthijs Mekking matthijs at nlnetlabs.nl
Mon Feb 13 12:48:03 UTC 2012

Hash: SHA1


On 02/10/2012 03:42 PM, Mathias Wolkert wrote:
> Hi
> On 2/9/12 14:04 , Matthijs Mekking wrote:
>> Hi,
>> I have got two pointers for you:
>> NSD will only output stats if there is anything to report, so if 
>> all stats are zero, no stats will be logged.
> Ouch, that's one way to do it... I'll add it to my list of oddities
> in nsd.
> It seems like stats are reset by an update of the zone, is that 
> expected also? What else resets the statistics, SIGUSR1?

I am seeing that behavior too (at zone updates), but I didn't expect
it. I'll look into it. Signals does not reset the statistics for me.

>> To increase logging, set the verbosity to a high number in 
>> nsd.conf.
> Is there anything higher than 2?

Computer says no: grep -r VERBOSITY *.c

Best regards,

>> Or build NSD with --enable-checking to get debug statements
>> (note that this will slow down the server).
>> Best regards, Matthijs
> /Tias
>> On 02/09/2012 11:00 AM, Mathias Wolkert wrote:
>>> Hi
>>> I have two identical servers running stock debian lenny with 
>>> kernel 2.6.32-bpo.3-amd64 and nsd 3.2.7-1.
>>> They are both hosting just one zone but the zones are
>>> different. One is big (+10M records) and the other bigger (+35M
>>> records).
>>> Sending the USR1 signal to dump statistics works fine with the
>>>  smaller server but nothing happens when sending it to the
>>> bigger server.
>>> I tried running the smaller zone on the "bad" server but it
>>> still does not respond to my SIGUSR1.
>>> Both are configured to generate statistics every 300s but that 
>>> also fails for the bigger server, it only generate XSTATS when 
>>> zone is updated and after nsec3-prepare.
>>> Either I'm failing to run it in debug mode or nsd is very
>>> silent, coz it gives me nothing.
>>> Any help is much appreciated.
>>> /Tias _______________________________________________ nsd-users
>>>  mailing list nsd-users at NLnetLabs.nl 
>>> http://open.nlnetlabs.nl/mailman/listinfo/nsd-users

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