FEATURE: Output memory statistics (--full)

[tlimoncelli]

Issue

How memory-efficient is dnscontrol?

I'm interested in how much memory per record we are using.

Resolution

Add memory stats when --full is output.

A large config:

Inaccurate statistics: {"memory_in_use":39930120,"memory_in_use_str":"40 MB","num_records":2806,"num_zones":176,"rc_size":520,"benchmark1":14230,"benchmark1str":"14 KiB bytes"}

A small config:

Inaccurate statistics: {"memory_in_use":24447240,"memory_in_use_str":"24 MB","num_records":146,"num_zones":20,"rc_size":520,"benchmark1":167446,"benchmark1str":"164 KiB bytes"}

RecordConfig is 520 bytes yet the overhead per record is 14K to 164K.

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