Test With Jitter Patched - Speed
Jitter is defined as the statistical variance of packet inter-arrival times. If packets are sent at perfectly regular intervals (e.g., every 10 ms) but arrive at intervals of 8 ms, 12 ms, 9 ms, 11 ms, the variation is jitter. When jitter exceeds the buffer capacity of an application, packets are either discarded or delayed, causing perceptible degradation.
| Metric | Definition | Unit | Example | |--------|------------|------|---------| | | Time for a packet to travel to destination and back | ms | 20 ms | | Jitter | Standard deviation or mean absolute deviation of latencies across multiple packets | ms | 5 ms | | Packet Loss | Percentage of packets never acknowledged | % | 0.1% | speed test with jitter
[ J(i) = J(i-1) + \frac - J(i-1)16 ]
| Tool | Protocol | Jitter Measurement | Typical Jitter Result (ms) | Reproducibility | |------|----------|--------------------|----------------------------|------------------| | Ookla Speedtest | Multi-threaded TCP + UDP optional | Yes (UDP test) | 2–8 | High | | Fast.com (Netflix) | HTTP/3 (QUIC) | No (latency only) | N/A | N/A | | Cloudflare Speed | HTTP/2 + WebSocket | Yes (latency variation) | 1–4 | Medium | | Google Speed Test (Measurement Lab) | TCP + HTTP | Yes (RTT variance) | 3–10 | High | | PingPlotter | ICMP + UDP | Yes (per-hop jitter) | 0.5–2 (wired) | Very High | Jitter is defined as the statistical variance of
Where ( D(i-1,i) ) is the difference in packet transit times between packet ( i ) and packet ( i-1 ). | Metric | Definition | Unit | Example