Re: Recommended DNS server for a medium 20-30k users isp

[William Herrin via NANOG <nanog () lists nanog org>]

On Mon, Aug 11, 2025 at 3:08 PM Matthew Petach via NANOG
<nanog () lists nanog org> wrote:
> often to the point where the final site is so overwhelmed by all the
> traffic slamming it that it can't perform healthcheck/depreferencing
> anymore.

Hi Matthew,

The unix "nice" command helps in this situation. It's counterintuitive
to run the critical Internet-facing service at a below-normal
priority, but it works. Under normal load there's no difference in
performance but when the server is overloaded administrative access
and health checks have priority access to the CPU.

Regards,
Bill Herrin

-- 
William Herrin
bill () herrin us
https://bill.herrin.us/
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