High memory consumption in bind 9.18.2

[Ondřej Surý]

Also please note that proper measurement of memory consumption is needed. There’s some good (semi-accurate) stuff at SO and it needs to be correlated with the statschannel output from named. Running “free” doesn’t measure memory consumption by any program.

Ondřej
--
Ondřej Surý — ISC (He/Him)

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> On 18. 5. 2022, at 18:19, Petr Špaček <pspacek at isc.org> wrote:
> 
> I would be very interested in hearing more!
> 
> In majority of our internal testing 9.16 has higher memory consumption than 9.18, especially when 9.18 is compiled with libjemalloc. And the differences are not small, for some configurations it can be even 2x or 3x more on 9.16 than it is on 9.18.
> 
> If you encounter it again please get back to us so we can diagnose it.
> 
> Thank you!
> Petr Špaček
> 
> 
>> On 18. 05. 22 8:56, Klaus Darilion via bind-users wrote:
>> I remember we had similar issues with 9.18 (isc ppa packages) and hence wen't back to 9.16. But I can not remember the details.
>> regards
>> Klaus
>>> -----Ursprüngliche Nachricht-----
>>> Von: bind-users <bind-users-bounces at lists.isc.org> Im Auftrag von Ondrej
>>> Surý101 71 l t1h, 18. Mai 2022 08:37
>>> An: Raman kumar <kumarraman.mca at gmail.com>
>>> Cc: bind-users at lists.isc.org
>>> Betreff: Re: High memory consumption in bind 9.18.2
>>> 
>>> You did not provided any details, so we can’t really help you.
>>> 
>>> What is “RAM consumption” anyway? VSZ, RSS, numbers pulled from stats
>>> channel from named?
>>> 
>>> What’s the hardware, what is the configuration, how was BIND 9 compiled
>>> (or packaged)?
>>> 
>>> The more details, the better
>>> 
>>> Ondrej
>>> --
>>> Ondřej Surý (He/Him)
>>> ondrej at isc.org
>>> 
>>> My working hours and your working hours may be different. Please do not
>>> feel obligated to reply outside your normal working hours.
>>> 
>>>> On 18. 5. 2022, at 8:32, Raman kumar <kumarraman.mca at gmail.com>
>>> wrote:
>>>> 
>>>> Hello Team,
>>>> 
>>>> While upgrading from BIND 9.16.10 to 9.18.2, we have observed high
>>> memory consumption.
>>>> 
>>>> On version 9.16.2, RAM consumption was 3.8 GB. And on 9.18.2, RAM
>>> consumption is 4.5 GB. Due to this an increase of approximately 20 %
>>> memory is observed.
>>>> 
>>>> Is this the expected behaviour or any tuning is needed?
>>>> 
>>>> Thanks in advance.
>>>> 
>>>> Regards,
>>>> Raman
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> 
> 
> -- 
> Petr Špaček
> -- 
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