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What does the jitter value mean?



Just wondering what exactly the ping jitter value is? Google searches tells me that anything over 150 is 'bad' for VOIP/Gaming. Is the value the same for all jitter measurement tools?

jitter ping voip

Created on Dec 1, 2011 6:00:07 PM

4 Replies




Jitter is a calculated value that is a measure for the difference in response times and does not tell you anything about the actual response times.

For example if 10 consecutive pings all reply in 10 ms, the ping jitter is 0. But if these 10 pings all reply in 100 ms, the jitter is also 0.

The jitter value tells you something about the variation in packet delay and is described in RFC 3550.


Created on Dec 1, 2011 6:46:22 PM



Hi A. Can someone explain exactly what the Ping Jitter vale means? I.e the formula that is described in the PRTG manual for the Ping Jitter sensor as it is not clear. B. How do I know what the normal Jitter is? Just run the sensor for a time and determine a baseline?

What is the meaning of each variable in the formula that appears in the manual?

Created on Aug 26, 2012 4:00:53 PM

Last change on Aug 28, 2012 2:10:05 PM by  Torsten Lindner [Paessler Support]



Hi Chen,

If you want to know "everything" about jitter calculation you can have a look at RFC 1889 and/or RFC 3550.

Ideally the jitter value (the variation in the delay of received packets) should always be 0, indicating a steady stream of packets.

Jitter is particularly annoying in VOIP networks.

(image by Cisco)


Created on Aug 31, 2012 5:59:09 PM



So is the Ping Jitter value return in PRTG in milliseconds or is it just a calculated score?

Created on Jul 12, 2017 10:46:04 AM

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