Benchmarking Pihole : Pi Zero vs Pi 3b+

Here’s a benchmark comparing pi-hole running on a Pi Zero (with USB ethernet) vs a Pi 3b+.

tl;dr There was negligible performance difference for blocked domains, but a measurable difference in mean for forwarded + cacheable domains. Although the Pi 3b+ has a 11ms better mean response time for forwarded queries, the P95 for pi zero is better in both blocked and forwarded queries.

I would recommend using the Pi Zero.

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