Figure 7
From: Middleware for efficient and confidentiality-aware federation of access control policies
Results of the performance tests. The upper chart shows the number of remote requests needed for evaluating the policies (lower is better), the lower chart shows the resulting policy evaluation time in milliseconds (lower is better). For each access request, we show the results for provider-side evaluation, tenant-side evaluation and federated evaluation. As shown, the federated policy provide the best results for most access requests.