High memory consumption in bind 9.18.2

[Raman kumar]

Hello,

Please find the details below.

Free command is used to check RAM available/used.  space used is 50GB on
RHEL 7.9 in bind version 9.18.2 whereas in bind version 9.16.10 RAM
space used is 44 GB with the same amount of data and configuration.

free -g
                      total        used        free      shared  buff/cache
  available
Mem:             50          50           0           0           0
  0
Swap:             9           0           9


starting BIND 9.18.2 (Stable Release) <id:3babb15>
named[31521]: running on Linux x86_64 3.10.0-1160.59.1.el7.x86_64 #1 SMP
named[31521]: built with  '--prefix=/opt/bind' '--sysconfdir=/etc/opt/bind'
'--with-openssl=no' '--disable-doh' 'PKG_CONFIG_PATH=/usr/lib/pkgconfig'
running as: named -n 4 -c /etc/opt/bind/named.conf.0
compiled by GCC 4.8.5 20150623 (Red Hat 4.8.5-44)
compiled with OpenSSL version: OpenSSL 1.0.2k-fips  26 Jan 2017
linked to OpenSSL version: OpenSSL 1.0.2k-fips  26 Jan 2017
compiled with libxml2 version: 2.9.1
linked to libxml2 version: 20901
compiled with zlib version: 1.2.7
linked to zlib version: 1.2.7

Regards,
Raman

On Wed, May 18, 2022 at 12:06 PM Ondřej Surý <ondrej at isc.org> wrote:

> 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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> >
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>
>
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