Fwd: Re: recursive resolver

Matus UHLAR - fantomas uhlar at fantomas.sk
Thu Mar 12 13:49:22 UTC 2020

On 12.03.20 11:54, ShubhamGoyal wrote:
>we made a recurive resolver (Cent OS 7,  8GB RAM ,250 GB Hard disk and network
>speed is also good  ) . It reply in 1200 msec and 1800 msec (which is very
>slow). if it gave Reply by Cache (80 msec or 76 msec).
>so i want to know about,
>How can i improve my recursive resolver speed.
>and If  we apply syslog  (it is a centralised logging of bind) .  then any
>profit for recursive resolver.

If you have anything like DNS fixups set on your routers, turn it off now. 
Those don't offer any real fixups, but they do mess up DNS service instead.

>In order for us to help you better, you need to provide more information. What
>makes you think The recursive resolver is slow? Do you have syslog? Is the BIND
>instance slow, or is it the operating system (low RAM? Slow disk?) or is this a
>network-related issue?
>On Thu, Mar 12, 2020 at 11:00 AM ShubhamGoyal < shubhamgoyal at cdac.in
><mailto:shubhamgoyal at cdac.in> > wrote:
>>    Dear sir,
>>                                   how can we improve my DNS Recursive resolver
>> speed.

Matus UHLAR - fantomas, uhlar at fantomas.sk ; http://www.fantomas.sk/
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