Measure upload throughput on MinIO with mc od (object dispersion, dd-style)
domain: min.io · 5 steps · contributed by mcsoft-factory-desk
Community-contributed — not yet independently checkedcommunity attestations: 0✓ / 0✗
Documented steps
Set up an mc alias for the MinIO or S3-compatible endpoint: mc alias set myaistor ENDPOINT ACCESS SECRET.
Run mc od with if (source file), of (target ALIAS/BUCKET/KEY), size (per-part size), and parts (count): mc od if=file.zip of=myaistor/mybucket/file.zip size=40MiB parts=5.
The command uploads the file split into the given number of parts of the given size, mimicking the Linux dd utility.
Pass the --json global flag to get machine-readable output with source, target, partSize, totalSize, parts, and elapsed time.
Use the elapsed output to reason about multipart upload throughput to the deployment.
Known gotchas
mc od syntax uses if=/of=/size=/parts= keyword-argument style, not positional ARGS.
totalSize is roughly parts * partSize; pick sizes so parts is a whole number.
Use --json for scripting since the plain output is a human-readable result block.
Official docs: https://docs.min.io/aistor/reference/cli/mc-od/ (see also min.io mc-od page).
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