Just a suspicion for now: Memory leak in 9.20.4?

[Borja Marcos]

> On 13 Feb 2025, at 14:46, Ondřej Surý <ondrej at isc.org> wrote:
> 
> There’s official KB article on the topic: https://kb.isc.org/docs/bind-memory-consumption-explained - you actually need to use jeprof and understand the BIND 9 internals.

Thank you, I will check it out.

I just sent the message wondering whether someone had seen something similar. It is a bit shocking given that 9.18 achieved better memory efficiency than the
previous versions if I remember well. 

For now, what surprised me is:

Server one, highest query load, mostly clients querying the typical A records.

Server two, lower query load, pattern is different receiving lots of MX queries from mail servers.

Both are running FreeBSD 14.2.. Bind compiled from ports.

Server one:  9.18.32
	boot time: Wed, 12 Feb 2025 14:04:42 GMT
	last configured: Fri, 14 Feb 2025 07:33:09 GMT
	VM size: 632 MB, RES 446MB

Second two:  9.20.5
	boot time: Thu, 13 Feb 2025 09:44:04 GMT
	last configured: Thu, 13 Feb 2025 10:33:47 GMT
	VM size: 1079MB, RES 945 MB.


The “sizes” are those reported by top (different from the Linux version).

I will keep monitoring and let you know.






Borja.

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