High memory consumption in bind 9.18.2

[Dmitri Pavlov]

Thank you ISC,

New run with the same input

#9.18.5
pmap -x ... | tail -n 1
total kB         34892476 29399048 29395316

#9.16.21
pmap -x ... | tail -n 1
total kB         27935060 27341676 27338344

The diff. Is still the same ~ 2 GB.

I’m pretty much sure you will get the same results in your lab.  My guess the earlier experiment with 1 mil zones and small number of machines could not visualize the diff.

With 100 MIL of records the diff. is more visual.

Hence the same question -> Should the memory reduction apply to our experiment? Please let us know if any additional details about our experiment are required.

Regards,
Dmitri.



From: bind-users <bind-users-bounces at lists.isc.org> On Behalf Of Victoria Risk
Sent: Monday, August 1, 2022 6:08 PM
To: Doug Whitfield <dwhitfield at perforce.com>
Cc: bind-users at lists.isc.org; Ond≈ôej Sur√Ω <ondrej at isc.org>
Subject: Re: High memory consumption in bind 9.18.2

Hi Doug,

I think Ondrej is referring to this post from a prior month: https://lists.isc.org/pipermail/bind-users/2022-June/106350.html<https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.isc.org%2Fpipermail%2Fbind-users%2F2022-June%2F106350.html&data=05%7C01%7Cdpavlov%40perforce.com%7C76baac03ecbc487cb94708da73cfd124%7C95b666d19a7549ab95a38969fbcdc08c%7C0%7C0%7C637949633668973748%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C2000%7C%7C%7C&sdata=7bHcN%2FQ7y5Azzg0w48fpG46aORYtbOSv9XZFqPZAu9Q%3D&reserved=0>

….
For tips on how to measure memory usage you might want to look at https://stackoverflow.com/questions/131303/how-can-i-measure-the-actual-memory-usage-of-an-application-or-process<https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Fstackoverflow.com%2Fquestions%2F131303%2Fhow-can-i-measure-the-actual-memory-usage-of-an-application-or-process&data=05%7C01%7Cdpavlov%40perforce.com%7C76baac03ecbc487cb94708da73cfd124%7C95b666d19a7549ab95a38969fbcdc08c%7C0%7C0%7C637949633668973748%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C2000%7C%7C%7C&sdata=PmGJoB2tZIhtn3VwEk5VO4gArx1yhqkTSii1OXJ41zo%3D&reserved=0> …..


Also note the comment about ignoring ’total’ memory.


Vicky


On Aug 1, 2022, at 10:32 AM, Ondřej Surý <ondrej at isc.org<mailto:ondrej at isc.org>> wrote:

On 1. 8. 2022, at 16:14, Doug Whitfield <dwhitfield at perforce.com<mailto:dwhitfield at perforce.com>> wrote:

as monitored from "top" RES value

Please read the whole thread on measuring the real consumed memory.

The '“top” RES value' has little or no value at all.

Ondrej
--
Ondřej Surý (He/Him)
ondrej at isc.org<mailto: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.


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