High memory consumption in bind 9.18.2

Wed Jun 22 04:30:18 UTC 2022

Hello,

As suggested, please find the attached artifacts which includes stats by
configuring statistics channel in named.conf, content at /proc/<PID>/statm,
top command output for both 9.16.21 and 9.18.3.

Regards,
Raman

On Thu, Jun 16, 2022 at 12:55 PM Ondřej Surý <ondrej at isc.org> wrote:

> 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
> > >> 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
> > bind-users at lists.isc.org
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>
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