High load on primary

[Tom Schmitt]

Hi,

thank you for this hint. 
I downloaded Bind 9.4.1 and looked into the doc-files for this config-option, but couldn't find anything about notify-delay.

Could you please give me the location where this option is explained?

Thanks,
Tom.


-------- Original-Nachricht --------
Datum: Fri, 04 May 2007 09:55:15 +1000
Von: Mark Andrews <Mark_Andrews at isc.org>
An: "Tom Schmitt" <TomSchmitt at gmx.de>
CC: comp-protocols-dns-bind at isc.org
Betreff: Re: High load on primary

> 
> 	notify-delay (BIND 9.4)
> 
> > Hello,
> > 
> > 
> > I use Bind 9.3.4 and have a load-problem on my primary DNS-Server.
> > 
> > Each morning I have for about three hours a huge amount of dynamic
> updates 
> > in serveral zones. This alone is no problem.
> > 
> > But I also have several secondaries which all want IXFRs after every
> update.
> > These IXFRS seem to produce such a high load on my primary, that several
> > dynamic-updates get a "timed out" (and the ISC-DHCP only try the update
> once)
> > ,
> > so some PC have no DNS-entry and therefore have a problem.
> > 
> > Now my question is how to reduce the CPU-load on my primary. I cannot
> reduce
> > the number of dynamic updates nor the number of secondaries.
> > 
> > My first try was to add the line "transfers-per-ns 1;" in the
> options-part of
> >  
> > configurationfile on every secondary in order to let them do less IXFRs 
> > at a given time. But to my (negative) surprise it didn't helped at all.
> The
> > number of IXFRs didn't changed nor are they better spread over a bigger
> > amount of time (which I hoped to gain from this change).
> > 
> > Is there any other possibility to reduce the number of IXFR in a given
> > amount of time?
> > 
> > Or is there another idea? (No, I have no bigger server to use)
> > 
> > Thanks for any help,
> > Tom.
> > -- 
> > "Feel free" - 10 GB Mailbox, 100 FreeSMS/Monat ...
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> > 
> > 
> -- 
> Mark Andrews, ISC
> 1 Seymour St., Dundas Valley, NSW 2117, Australia
> PHONE: +61 2 9871 4742                 INTERNET: Mark_Andrews at isc.org

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