Review Checklist for Fabric Contention Debug focuses on contention hotspot recurrence, throughput collapse trigger. The goal is to map symptoms to boundary contracts, owner actions, and regression-proof closure.
Baseline manifest and revision are explicit.
Boundary contracts for this topic are current and approved.
Ownership map covers all open issues.
Focused and full regression evidence both exist.
Residual risks are either closed or bounded via waiver policy.
Owners signed: performance lead, fabric owner, firmware owner.
OWNERSHIP MAP — Fabric Contention Debug
artifact owner
----------------- -----------------
primary owner performance lead
co-owner fabric owner
review owner firmware owner
No top-level issue should remain ownerless beyond one review cycle.Fabric correctness and contention behavior must be proven together.
FABRIC FLOW
masters -> routers/VCs -> slaves + memoryLATENCY TAIL
p50 ███
p95 ██████
p99 ██████████NoC contention heatmap
ordering violation report
QoS fairness summary
protocol trace
Bandwidth looked fine at average load, but p99 tail violated SLA due to arbitration starvation.
Isolate traffic class
Check ordering assumptions
Audit arbitration policy
Ask: what baseline, owner, and artifact prove this topic is truly closed?
State baseline manifest and owner with every closure metric.
Run cross-domain regression after every top-level fix.
Comparing results across different manifests.
Unowned issues slipping through review cycles.
Waiving risks without expiry and validation plan.
Contention debug isolates head-of-line blocking, unfair arbitration, and backpressure loops before over-provisioning bus width or buffers.
Metric: contention hotspot recurrence, throughput collapse trigger
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