SP^2Bench: A SPARQL Performance Benchmark

Recently, the SPARQL query language for RDF has reached the W3C recommendation status. In response to this emerging standard, the database community is currently exploring efficient storage techniques for RDF data and evaluation strategies for SPARQL queries. A meaningful analysis and comparison of these approaches necessitates a comprehensive and universal benchmark platform. To this end, we have developed SP²Bench, a publicly available, language-specific SPARQL performance benchmark. SP²Bench is settled in the DBLP scenario and comprises both a data generator for creating arbitrarily large DBLP-like documents and a set of carefully designed benchmark queries. The generated documents mirror key characteristics and social-world distributions encountered in the original DBLP data set, while the queries implement meaningful requests on top of this data, covering a variety of SPARQL operator constellationsand RDF access patterns. As a proof of concept, we apply SP²Bench to existing engines and discuss their strengths and weaknesses that follow immediately from the benchmark results.