Silphium: 0.87× baseline latency

What we measured

Path analysis

Traffic kept the same route. Latency rose without a visible path change, which points at congestion or a fault on the existing route rather than a reroute.

Cross-probe verdict. The effect was confined to a narrow set of paths, so a cable-wide fault is unlikely.

Timeline

• 2026-04-22 23:01 UTC Alert 2026042201: warning — ratio 2.03x
• 2026-04-23 00:00 UTC Alert #90 improving: 1/3 consecutive OK
• 2026-04-23 00:32 UTC Alert #90 resolved: RTT 144.87ms (baseline 165.82ms), 3 consecutive OK

Detection method

Latency is sampled continuously from our probe network. An alert opens when round-trip time to a monitored endpoint holds above its rolling baseline, and closes automatically once it returns. Full method is described on the methodology page.

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