What is jitter?

Jitter is variation in packet timing or delay.

Website: https://zenshield.com/glossary/jitter

HomeGlossary

Jitter

Jitter is variation in packet timing or delay.

On this page

  1. A practical example
  2. What to check
  3. What it does not tell you
  4. Sources

A connection can have a reasonable average delay while individual responses arrive unevenly. This variation can matter in live calls and games, where steady delivery may be more useful than one fast response.

A practical example

Consider an illustrative sequence of round-trip times: 30, 31, 95 and 29 milliseconds. The average hides the isolated long delay. This is a simple example of variation, not a formal jitter calculation or a measurement of Zenshield.

What to check

Use the game or calling application’s own connection information when available. Watch a short session and record when the interruption occurs. Compare the same server and network before changing another condition. If the app reports jitter, keep its unit and the measurement window in the report.

What it does not tell you

Do not infer jitter from download speed alone. A single ping cannot describe variation either. The application’s definition of the statistic matters when comparing reports from different tools. Read the tool’s method before treating two numbers as equivalent.

Read the technical reference for the underlying definition. For a connection that is failing now, use the troubleshooting guide. To choose an app, follow the VPN selection worksheet.

Sources

Internet speed testHow to lower ping: test the cause before changing settings

On this page

Keep exploring

Internet speed testHow to lower ping: test the cause before changing settings

Keep exploring

What is latency? ↗

Latency is the delay experienced along a network path.

What is packet loss? ↗

Packet loss means traffic sent along a path does not arrive as expected.

How to lower ping: test the cause before changing settings ↗

Separate Wi-Fi delay, busy uploads and server distance, then compare the same game or call with useful latency observations.