Re: Max number of views and performance.

[Alans]

BIND loads all views to memory, with that number you will run into 
memory problems.


regards,
Alans
On 8/24/2011 7:04 AM, sky shade wrote:

Hello

I like to know if bind 9.8 have a limit of view?
There is any number or I can create something like 1 million views 
without problems?

There is any performance implication in use to many views?

Thanks

Skyshade




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Re: Max number of views and performance.

[sky shade]

Someone know how bind test client matches? I know that its respect the
declaration sequence, but i dont know if they will test matches in all views
before goes to default.

On Wed, Aug 24, 2011 at 3:53 AM, Alans  wrote:

> BIND loads all views to memory, with that number you will run into memory
> problems.
>
> regards,
> Alans
>
> On 8/24/2011 7:04 AM, sky shade wrote:
>
>> Hello
>>
>> I like to know if bind 9.8 have a limit of view?
>> There is any number or I can create something like 1 million views without
>> problems?
>> There is any performance implication in use to many views?
>>
>> Thanks
>>
>> Skyshade
>>
>>
>>
>>
>> __**_
>> Please visit 
>> https://lists.isc.org/mailman/**listinfo/bind-usersto
>>  unsubscribe from this list
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>
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Re: Max number of views and performance.

[Chris Buxton]

Views are tested in order. The first view that matches (by match-* statements), 
wins. There is no default unless you create one as the last view, typically 
without any match-* statements -- the default is to match all requests.

1 million views sounds to me like a recipe for disaster. The time to run 
through all of the match-clients statements would probably be excessive, and 
the memory requirements would likely be huge.

Chris Buxton
BlueCat Networks

On Aug 24, 2011, at 9:32 AM, sky shade wrote:

> Someone know how bind test client matches? I know that its respect the 
> declaration sequence, but i dont know if they will test matches in all views 
> before goes to default.
> 
> On Wed, Aug 24, 2011 at 3:53 AM, Alans  wrote:
> BIND loads all views to memory, with that number you will run into memory 
> problems.
> 
> regards,
> Alans
> 
> On 8/24/2011 7:04 AM, sky shade wrote:
> Hello
> 
> I like to know if bind 9.8 have a limit of view?
> There is any number or I can create something like 1 million views without 
> problems?
> There is any performance implication in use to many views?
> 
> Thanks
> 
> Skyshade
> 
> 
> 
> 
> ___
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> from this list
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Re: Max number of views and performance.

[Steve Arntzen]

It is my experience the client hits the views in order (top, down) until
an ACL allows it.  Once an ACL allows it in a view, it goes no further.

Steve.



On Wed, 2011-08-24 at 10:32 -0300, sky shade wrote:
> Someone know how bind test client matches? I know that its respect the
> declaration sequence, but i dont know if they will test matches in all
> views before goes to default.
> 
> On Wed, Aug 24, 2011 at 3:53 AM, Alans  wrote:
> BIND loads all views to memory, with that number you will run
> into memory problems.
> 
> regards,
> Alans
> 
> 
> On 8/24/2011 7:04 AM, sky shade wrote:
> 
> 
> Hello
> 
> I like to know if bind 9.8 have a limit of view?
> There is any number or I can create something like 1
> million views without problems?
> There is any performance implication in use to many
> views?
> 
> Thanks
> 
> Skyshade
> 
> 
> 
> 
> 
> ___
> Please visit
> https://lists.isc.org/mailman/listinfo/bind-users to
> unsubscribe from this list
> 
> bind-users mailing list
> bind-users@lists.isc.org
> https://lists.isc.org/mailman/listinfo/bind-users
> 
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Re: Max number of views and performance.

[Torinthiel]

On 08/24/11 16:03, Chris Buxton wrote:
> Views are tested in order. The first view that matches (by match-*
> statements), wins. There is no default unless you create one as the last
> view, typically without any match-* statements -- the default is to
> match all requests.
> 
> 1 million views sounds to me like a recipe for disaster. The time to run
> through all of the match-clients statements would probably be excessive,
> and the memory requirements would likely be huge.

And one question remains: Why would anyone need such a setup.
Torinthiel



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Re: Max number of views and performance.

[Dmitry Rybin]

24.08.2011 08:04, sky shade пишет:

Hello

I like to know if bind 9.8 have a limit of view?
There is any number or I can create something like 1 million views
without problems?
There is any performance implication in use to many views?



I use about 120 views. It accure 1,8gb of RAM in Idle. You must limit 
recursive cache to 32-64MB per view, and forward all recursive queries 
to another DNS server (I use powerdns-recurser at 127.0.0.2) for best 
perfomance.

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