Latency
Round-trip time is useful, but it should be compared with time to first byte and application response time.
Open network notes
Measure the route,
not just the endpoint.
A compact reference for understanding latency, packet loss, route changes, and web-delivery behavior across public networks.
Reference site available
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Loss & jitter
Short samples can hide congestion. Repeat bounded tests and compare stable windows before drawing conclusions.
Routing
Reachability may differ by provider and direction. Observe both the forward route and the return path.
Working principles
Small tests. Clear claims.
- Separate DNS, connection, TLS, and payload results.
- Use fixed-size transfers for comparable evidence.
- Record the access network and test time.
- Do not treat one successful ping as service health.