Request for review of performance advice

[Niall O'Reilly]

On 9 Jul 2020, at 21:25, Havard Eidnes via bind-users wrote:

> 2e#1) Make sure your UDP socket *receive* buffers are big enough.
>       If on BSD, monitor for "dropped due to full socket buffers"
>       count in "netstat -s" output, and tune accordingly.  Note that
>       this may be a symptom of mis-tuning of other parts of BIND,
>       causing excessive CPU usage, which may contribute to this
>       problem.

I'm seeing some instances of "dropped due to no socket" on my FreeBSD
systems where my resolvers run.

I'm wondering

- whether and how I can address this with tuning, and also
- whether I'm wandering out of scope for this list.

Thanks in anticipation and/or apologies.
Niall
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