Threaded bind on CentOS

[Jack Tavares]

I am using bind 9.7.3 and I have tried running it with
various -n values and it appears that I will always get
n+3 threads.

Ex:
I run it:

named -n 1
I get 4 threads
named -n 4
I get 7 threads

etc.

I understand the desire to have background "housekeeping"
threads, but I would like to know what, exactly, those threads do.

I have looked in the ARM, but have not seen any discussion
of the threading behavior.

Is there a piece of documentation somewhere that discusses this?

Thank you
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