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Proof

Warm and cold paths.

Benchmark numbers only mean something when the measured job is named.

The categories

Warm local read = the needed data is already local, the operating system already has the needed file pages ready, and Bitfield knows where to read.Cold local read = the data is local, but the machine still has setup or fetch work to do before the bytes are ready.Content address lookup = Bitfield first resolves the content identity, then reads the bytes.Durable batch write = Bitfield records a batch of writes in the durable write path, then the benchmark divides the batch cost across the written items.Runtime call = app code asks a Bitfield target to do work through Runtime Kit.Network command = a request crosses the network before the app gets an answer.

Why the split matters

These jobs are different:
JobWhat is includedWhat is not included
Warm local readLocal bytes, warm pages, known read shape.Cold disk fetch, network trip, general database request.
Cold local readLocal storage fetch or setup work.Network trip unless the benchmark says network.
Content address lookupIdentity resolution before reading.Exact-position read with no lookup.
Durable batch writeSaved-write work for a batch.One isolated write measured as its own wall-clock event.
Runtime callRuntime Kit request and reply shape.Raw storage read cost by itself.
Network commandThe networked command path.Local read path by itself.
If a row says one category, read it as that category. Do not silently turn it into another job.

The current public rows

Warm local read.The data is local and warm, so Bitfield can read known local bytes without sending a request to a separate database process.
Content address lookup.Bitfield first resolves the data fingerprint, then reads the bytes.
Durable batch write.The measured work includes the saved-write contract for a batch, then divides the batch cost across written items.
Batched write ceiling.This is a ceiling number for a full batch. It is not the same thing as every saved write.

The rule

The number is allowed to be shocking. The category is not allowed to be blurry.Every public speed claim needs the number, unit, measured category, mechanism, and non-claims. If any of those are missing, the number is not ready for public docs.
Last modified on May 8, 2026