This paper presents a benchmark of RDF stores with realworld datasets and queries from the EU Publications Office (PO). The study compares the performance of four commercial triple stores: Stardog 4.3 EE, GraphDB 8.0.3 EE, Oracle 12.2c and Virtuoso 7.2.4.2 with respect to the following requirements: bulk loading, scalability, stability and query execution. The datasets and the selected queries (44) are used in the Linked Data publication workflow at PO. The first results of this study provides

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... ome insights into the quantitative performance assessment of RDF stores used in production environment in general, especially when dealing with large amount of triples. Virtuoso is faster in querying and loading scenarios while GraphDB shows better results regarding stability.