Impact
What Drupflare costs to run in electricity, carbon, water and money, and how far each figure can be trusted. This page holds the labels every figure carries and a map of the pages that hold the figures.
Pages
- What This Does Not Claim: the limits of every claim.
- Reproducing The Numbers: commands that reproduce each figure.
- References: the numbered references the other pages cite.
- Energy: the saving against conventional hosting, operating states and the per-request model.
- Energy Per View: the energy of one view, the traffic mix, visitor devices and Spool.
- Fleet Energy: many sites at once, institutional workloads and the saving by site count.
- Carbon, Water and Embodied Carbon: the environmental figures.
- Economics: what each host costs at each traffic level, the plan limits and the comparison against a VPS.
Measurement Labels
Every figure on the impact pages carries one of four labels.
| label | meaning |
|---|---|
measured |
read off an instrument on real hardware, with an n and a spread |
derived |
arithmetic over measured inputs and published constants |
derived (modelled) |
arithmetic that also takes an input nobody has measured for a real site |
published |
quoted from a named external source, cited where it appears |
A figure keeps its label wherever it is repeated.