Measuring Packet Delay Variation¶
Goals¶
In this example we explore the various packet delay variation (also known as packet jitter) statistics of application modules.
INET version:
4.4
Source files location: inet/showcases/measurement/jitter
The Model¶
The packet delay variation is measured in several different forms:
Instantaneous packet delay variation: the difference between the packet delay of successive packets (
packetJitter
statistic)Variance of packet delay (
packetDelayVariation
statistic)Packet delay difference compared to the mean value (
packetDelayDifferenceToMean
statistic)
Here is the network:

Here is the configuration:
[General]
network = JitterMeasurementShowcase
sim-time-limit = 5s
# source application ~96Mbps throughput
*.source.numApps = 1
*.source.app[0].typename = "UdpSourceApp"
*.source.app[0].source.packetLength = 1200B
*.source.app[0].source.productionInterval = exponential(100us)
*.source.app[0].io.destAddress = "destination"
*.source.app[0].io.destPort = 1000
# destination application
*.destination.numApps = 1
*.destination.app[0].typename = "UdpSinkApp"
*.destination.app[0].io.localPort = 1000