LDBC’s Semantic Publishing Benchmark (SPB) measures the performance of an RDF database in a load typical for metadata-based content publishing, such as the famous BBC Dynamic Semantic Publishing scenario. Such load combines tens of updates per second (e.g. adding metadata about new articles) with even higher volume of read requests (SPARQL queries collecting recent content and data to generate web page on a specific subject, e.g. Frank …

In previous posts (Getting started with snb, DATAGEN: data generation for the Social Network Benchmark), Arnau Prat discussed the main features and characteristics of DATAGEN: realism, scalability, determinism, usability. DATAGEN is the social network data generator used by the three LDBC-SNB workloads, which produces data simulating the activity in a social network site during a period of time. In this post, we conduct a series of experiments …

In this multi-part blog we consider the challenge of running the LDBC Social Network Interactive Benchmark (LDBC SNB) workload in parallel, i.e. the design of the workload driver that will issue the queries against the System Under Test (SUT). We go through design principles that were implemented for the LDBC SNB workload generator/load tester (simply referred to as driver). Software and documentation for this driver is available here: …

LDBC SPB (Semantic Publishing Benchmark) is based on the BBC linked data platform use case. Thus the data modelling and transaction mix reflects the BBC’s actual utilization of RDF. But a benchmark is not only a condensation of current best practices. The BBC linked data platform is an Ontotext Graph DB deployment. Graph DB was formerly known as Owlim.

So, in SPB we wanted to address substantially more complex queries than the lookups that …

The Semantic Publishing Benchmark (SPB), developed in the context of LDBC, aims at measuring the read and write operations that can be performed in the context of a media organisation. It simulates the management and consumption of RDF metadata describing media assets and creative works. The scenario is based around a media organisation that maintains RDF descriptions of its catalogue of creative works. These descriptions use a set of ontologies …

The Linked Data Benchmark Council (LDBC) mission is to design and maintain benchmarks for graph data management systems, and establish and enforce standards in running these benchmarks, and publish and arbitrate around the official benchmark results. The council and its https://ldbcouncil.org website just launched, and in its first 1.5 year of existence, most effort at LDBC has gone into investigating the needs of the field through interaction …