What is the fastest GraphDB?

Toyotaro Suzumura and Miyuru Dayarathna from the Department of Computer Science of the Tokyo Institute of Technology and IBM Research published an interesting research about a benchmark between Graph Databases in the Clouds called:<p>"XGDBench: A Benchmarking Platform for Graph Stores in Exascale Clouds"<p>This research conducts a performance evaluation of four famous graph data stores AllegroGraph, Fuseki, Neo4j, an OrientDB using XGDBench on Tsubame 2.0 HPC cloud environment. XGDBench is an extension of famous Yahoo! Cloud Serving Benchmark (YCSB).<p>OrientDB is the faster Graph Database among the 4 products tested. In particular OrientDB is about 10x faster (!) than Neo4j in all the tests.<p>Look at the Presentation (25 slides) and Full Research PDF.