Jitter
Jitter is the variation in latency over time — how much the delay between packets fluctuates.
Steady latency is predictable; high jitter is not, and it breaks real-time applications like voice and video even when average latency looks fine. Monitoring jitter catches instability that averages hide.
Related terms
LatencyLatency is the delay between sending a request and receiving a response, usually measured in milliseconds.Packet LossPacket loss is the percentage of network packets that fail to reach their destination.ICMP / PingICMP (Internet Control Message Protocol) is the network protocol behind "ping" — a simple echo request used to check whether a host is reachable and how long it takes to respond.
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