Verification IP & Protocol Compliance · All levels
VIP Metrics Reference
Core metrics for latency quality, command efficiency, margin health, and field reliability.
Core metric families
QoS: p50/p95/p99 latency, jitter, and class fairness.
Efficiency: checker hit rate, ACT/PRE per request, bus turnaround overhead.
Capacity pressure: queue age distribution and blocked-cycle share.
Margin: eye width/height, Vref drift, retrain frequency, byte-lane outliers.
Reliability: CE/UE trends, scrub impact, rowhammer alert rates.
diagram
BEFORE / AFTER GRAPH - VIP Closure
metric quality
^
| o target band
| o post-fix sweep
| o
| o baseline (failing)
+----------------------------------------------> iteration
evidence capture fix applied closure run
Use this view to prove improvement is causal, not accidental.