measurements

Recorded metrics in OMNeT++ simulations

When running a compiled OMNeT++ simulation, several measurements are performed and the following metrics are collected. All measurements are saved as vectors containing the measurement results over time. Measurements are written event-based, e.g., the size of incoming tokens tokenInSize is recorded directly when a token enters a place or transition.

Per place and transition (inside VNFs):

• tokenInSize: Size of incoming requests (tokens)
• tokenInDelay: Delay from creation until arrival at the place/transition. Also useful for measuring end-to-end delay.

Additionally:

• queueLength: Number of tokens in the queue at a queuing place in front of a transition
• processingDelay: Delay of a timed transition, e.g., representing the processing delay of a VNF

Additional metrics can easily be added in the OMNeT++ base files, which implement the behavior (including measurement) of places and transitions.