High memory consumption in bind 9.18.2

Thu Jun 16 07:25:14 UTC 2022

Hi,

we cannot really help you if you ignore everything that was said to you regarding the memory measurements.

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 16. 6. 2022, at 9:02, Raman kumar <kumarraman.mca at gmail.com> wrote:
> 
> Hello All,
> 
> We configured bind 9.18, using jemalloc but still memory consumption is high in 9.18 as compared to 9.16.
> 
> On version 9.16.21, RAM consumption was 3.8 GB without jemalloc. And on 9.18.2, RAM consumption is 4.2 GB with jemalloc with the same data.
> 
> Is this the expected behaviour or any more tuning is needed?
> 
> One more thing: does CNAME record length also impact the memory used?
> 
> Regards,
> Raman
> 
> 
> On Thu, May 19, 2022 at 3:52 PM Petr Špaček <pspacek at isc.org> wrote:
> On 18. 05. 22 22:39, Ondřej Surý wrote:
> > Hi Klarstein,
> >
> > Gathering the output of named statschannel should be good enough for initial assessment (json please).
> >
> > For 9.18, make sure the jemalloc is being used at runtime.
> 
> Here are commands you asked for:
> 
> 1. when running ./configure, make sure the output at the end has this:
> 
> Configuration summary:
> -------------------------------------------------------------------------------
> Optional features enabled:
>      Memory allocator: jemalloc
> 
> 
> 2. Then, configure statistics channel in named.conf like this:
> 
> statistics-channels {
>         inet 127.0.0.1 port 8080;
> };
> 
> 
> 3. With that in place you can grab stats from this URL:
> http://127.0.0.1:8080/json/v1
> 
> Configuration for v9.16 is the same, just skip the jemalloc part.
> 
> 4. Bonus points for grabbing /proc/<PID>/statm content at the same time
> as content of the JSON stats endpoint (if you are on Linux).
> 
> I hope it helps.
> Petr Špaček
> 
> 
> 
> >
> > Ondrej
> > --
> > Ondřej Surý — ISC (He/Him)
> >
> > 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 22:32, Klaus Darilion via bind-users <bind-users at lists.isc.org> wrote:
> >>
> >> Can you please provide some commands whose output you are interested? I want to collect the statistics for 9.16 before updating to 9.18.
> >> Thanks
> >> Klaus
> >>
> >>> -----Ursprüngliche Nachricht-----
> >>> Von: bind-users <bind-users-bounces at lists.isc.org> Im Auftrag von Petr
> >>> Špacek
> >>> Gesendet: Mittwoch, 18. Mai 2022 18:20
> >>> An: bind-users at lists.isc.org
> >>> Betreff: Re: AW: High memory consumption in bind 9.18.2
> >>>
> >>> 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
> >>>>>> --
> >>>>>> Visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe
> >>> from
> >>>>> this list
> >>>>>>
> >>>>>> ISC funds the development of this software with paid support
> >>>>> subscriptions. Contact us at https://www.isc.org/contact/ for more
> >>>>> information.
> >>>>>>
> >>>>>>
> >>>>>> bind-users mailing list
> >>>>>> bind-users at lists.isc.org
> >>>>>> https://lists.isc.org/mailman/listinfo/bind-users
> >>>>
> >>>
> >>>
> >>> --
> >>> Petr Špaček
> >>> --
> >>> Visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this
> >>> list
> >>>
> >>> ISC funds the development of this software with paid support subscriptions.
> >>> Contact us at https://www.isc.org/contact/ for more information.
> >>>
> >>>
> >>> bind-users mailing list
> >>> bind-users at lists.isc.org
> >>> https://lists.isc.org/mailman/listinfo/bind-users
> >> --
> >> Visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list
> >>
> >> ISC funds the development of this software with paid support subscriptions. Contact us at https://www.isc.org/contact/ for more information.
> >>
> >>
> >> bind-users mailing list
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> >> https://lists.isc.org/mailman/listinfo/bind-users
> 
> 
> --
> Petr Špaček
> --
> Visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list
> 
> ISC funds the development of this software with paid support subscriptions. Contact us at https://www.isc.org/contact/ for more information.
> 
> 
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> --
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> 
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> 
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