Sensitivity Analysis of Performability Model to Evaluate PBFT Systems

The evaluation of performance and availability of consensus protocols used in distributed networks is a crucial part in the development of tailored solutions for diversified applications. When building an analytical model for performability evaluation, the sensitivity analysis of the model parameters is a necessary step to determine the output variance at the variation of the input parameters. The sensitivity analysis performed in this work shows that the input parameters of the analyzed performability model have a highly non-linear effect on the considered performability metrics, determining a large variance on the output for small variation of the inputs.