BIND 9.16.17-snapshot - testers needed - recursive performance

[Erich Eckner]

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Hi,

I switched to the 9.16.17 release candidate yesterday and so far, it runs 
well on my 6 very-low traffic dns servers (one of which is also 
authoritative).

Only thing, I noticed, is, that it uses more memory than 9.16.16 on the 
weakest of my servers (a 32-bit machine running archlinux32):

~14.8% -> ~20.4% (of 256MB total memory)

But this could also be due to different load - there is no real long-time 
monitor set up for this, and I simply took some values right before the 
change and have been monitoring the memory consumption since then.

I cannot really tell, whether the memory consumption is higher on the 
other machines, as those circle around or below 1% and there's too much 
noise down there :-D (but "10MB more ram needed" could well be possible, 
as these other machines all have >=2GB ram).

regards,
Erich

On Tue, 25 May 2021, Ondřej Surý wrote:

> Hi,
>
> we merged a change that substantially reduces a contention between threads
> and improves the recursive performance in 9.16 branch quite significantly.
>
> After the change, the 9.16 branch performance will surpass 9.11 performance
> in both scenarios - authoritative (already the case, from the very beginning)
> and recursive (since a version to be released in June).
>
> Although, we are quite confident that the new code is correct, we would appreciate
> if people running different work loads than ours to test the snapshot tarball available
> from here:
>
> https://users.isc.org/~ondrej/bind-9.16.17-pre.tar.xz
>
> We would like to hear both success (it’s ok here in the mailing list) and failure stories
> (please create GitLab issues).
>
> Thanks,
> Ondrej
> --
> Ondřej Surý (He/Him)
> ondrej at isc.org
>
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