[Opendnssec-user] Memory usage

[Matthijs Mekking]

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On 06/01/2011 01:34 PM, Miek Gieben wrote:
> [ Quoting Matthijs Mekking at 11:12 on June  1 in "Re: [Opendnssec-user] Memory usage"... ]
>>>>   500.000       118.4 Mb        456.9 Mb        1.9 Gb          1.6 Gb
>>>> 1.000.000       237.6 Mb        915.2 Mb        3.5 Gb          3.2 Gb
>>>> 5.000.000       1.2 Gb          4.6 Gb          16.2 Gb         14 Gb
>>>
>>> Thanks for this nice list. In the last row I count that ods needs
>>> 3.2K per NS (if I got the zeros right), that does seem a lot.
>>
>> My apologies for the confusing terminology. #NS stands for the number of
>> delegations. So it's not 3.2K per NS, but per delegation.
>>
>> The zone is generated with ldns-gen-zone. So the delegation consists of
>> 2 NS records and a NSEC3 record + corresponding RRSIG record. 50% of
>> them have 1-4 DS records, plus corresponding RRSIG record. The
>> NSEC3+RRSIG and DS+RRSIG storage already take up roughly 2.2K.
> 
> Thanks for the clarification.
> 
> One other question I have: when ods resigns a zone, do these memory
> requirements stay the same? 

There exists a temporary increase when reading in the new records. In
the case of 1.000.000 delegations for example, the temporary increase is
0.8 Gb (from 3.2 to 4.0 Gb).

Best regards,

Matthijs

> 
> grtz,
>     Miek
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