Object Storage Bandwidth Benchmark Baseline

This document captures the reproducible local baseline for performance plan item Object-storage bandwidth tests.

Methodology:

Benchmark exercises the ObjectStoragePort transfer paths directly.
Source-object materialization downloads one 64 MiB object into worker input storage.
Generated clip upload writes four clips totaling 32 MiB back into object storage.
The baseline uses a local file-copy adapter for raw disk throughput and a throttling layer to simulate object-storage caps without requiring a live S3 environment.

How to rerun:

mvn -q -Dtest=ObjectStorageBandwidthBenchmarkHarness test

Generated artifact:

Interpretation notes:

The local-disk row shows the upper bound of the benchmark on the current machine.
The throttled rows approximate how worker staging and clip upload latency degrade as available storage bandwidth drops.
This benchmark is intended as a reproducible local planning baseline, not a production throughput claim.

Measured baseline on this workspace:

Profile	Source MiB	Uploaded MiB	Materialize ms	Upload ms	Materialize MiB/s	Upload MiB/s
`local-disk`	64	32	49.91	38.78	1282.23	825.19
`100 MiB/s`	64	32	681.70	359.21	93.88	89.08
`50 MiB/s`	64	32	1323.63	678.67	48.35	47.15
`25 MiB/s`	64	32	2610.05	1322.83	24.52	24.19