bind memory usage

[Sam Wilson]

In article <gi5sh1$f17$1 at sf1.isc.org>, schulz at adi.com (Thomas Schulz) 
wrote:

> In article <gi2uke$2d89$1 at sf1.isc.org>,
> =?UTF-8?B?TGVvbmFyZG8gUm9kcmlndWVzIE1hZ2FsaMOjZXM=?=
> 	 <leolistas at solutti.com.br> wrote:
> >[base64 guff]
> 
> 
> You know, the above is not very usefull.  Can someone please fix the
> newsgroup gateway.

The content is below.  I forward it only because it's actually concrete 
result that might be useful to someone.

Sam
========================================================================


I just test bind 9.5.0-P2 and 9.5.1-rc1

Bind 9.5.0-P2 allocate over 2Gb per 10 minutes of work.
Bind 9.5.1 allocate 2Gb per 30 hours.

14.12.2008, <D0><B2> 2:15, JINMEI Tatuya / 
<E7><A5><9E><E6><98><8E><E9><81><94>
<E5><93><89> 
<D0><BD><D0><B0><D0><BF><D0><B8><D1><81><D0><B0><D0><BB>(<D0><B0>):

> At Sat, 13 Dec 2008 11:50:52 -0200,
> Leonardo Rodrigues Magalh<C3><A3>es <leolistas at solutti.com.br> wrote:
>
>>    i'm trying to run bind 9.5.0-P2 on a very low memory system.  
>> It's a
>> RouterBoard 450 with 32Mb RAM running OpenWRT.
>>
>> root at sede:~# cat /proc/meminfo
>> MemTotal:        29920 kB
>>
>>    the problem is that bind seems to consume a LOT of memory ...  
>> well,
>> a lot for low memory devices, i never noticed that on machines with  
>> BS
>> of RAM.
>
> [snip]
>
>>    question is .... is there something i can do to low bind's memory
>> usage and successfully run it on those very low embedded devices ???
>
> Admittedly, BIND9 tends to require a lot of memory.  I'm not sure if
> it can reasonably function with a total system memory of 32MB.
>
> Some related points:
> - if you enable threads, disable them.  With the thread support BIND9
>  will require even more memory.
> - "max-cache-size 1048576" is a meaningless configuration:
>             Any positive values less than 2MB will be ignored reset
>             to 2MB.
>  (from ARM)
> - 'rndc flush' doesn't release allocated system memory.  It just
>  frees all cache entries within the BIND9 process, so it's not
>  surprising that you didn't see the memory footprint decrease after
>  the flush operation.
>
> ---
> JINMEI, Tatuya
> Internet Systems Consortium, Inc.
> _______________________________________________
> bind-users mailing list
> bind-users at lists.isc.org
> https://lists.isc.org/mailman/listinfo/bind-users
>

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