Real flag OFF-vs-ON A/B from a local homelab with a production-like
multi-cluster topology (not production, no prod data or traffic). Micro
arm: a light key behind a backlog goes from first-served at step 480 to
step 4, wait p95 down ~70%, contention fairness 0.34 to 1.0, with the
balanced and lone-key cases unchanged and drain steps identical
(work-conserving). End-to-end arm across three worker clusters: the
victim tenant start latency drops ~38% mean while the flood tenant is
unchanged. Relative numbers only; single box, not prod scale.
Wes Mason
17ecdcd24f