Looking for Guidance on Enhancing SPARQL Query Performance for Huge Datasets

Miscellaneous
1

Hello Everyone :hugs:,

I would appreciate some guidance since I’ve been working on an undertaking that uses SPARQL for large-scale data administration and analysis. I’m having some performance problems.

While the size of the dataset has been reasonable thus far for my project, which entails querying a large RDF collection, I’m observing noticeable slowdowns while executing intricate SPARQL queries. More specifically, queries with several OPTIONAL pattern and FILTER condition are getting slower and slower, which affects how effective the program is as a whole.

Below is further information regarding my setup:

  • The size of the dataset is roughly 10 billion triples.
  • Query patterns usually include different FILTER criteria, multi-join procedures, and nested OPTIONAL patterns.
  • Using OpenLink Virtuoso to query the SPARQL engine

I want to know how to make SPARQL queries for big datasets as efficient as possible.

Here are a few particular places where I would welcome advice:

  • Indexing Strategies: Which large RDF datasets should be indexed first to maximise query performance? :thinking:
  • Techniques for Query Optimisation: Exist any particular SPARQL query pattern or optimisation strategies that can be used to shorten the execution time? :thinking:
  • Resource Management: How could I more effectively allocate server resources to process complex queries? :thinking:
  • Virtuoso Setting up: Are there any particular Virtuoso settings or configurations that may improve performance? :thinking:

I also followed this :point_right: https://stackoverflow.com/questions/69779846/optimize-sparql-query-for-a-very-large-database-sap-analytics

I would be appreciative of any advice on enhancing SPARQL query performance or experience dealing with such issues. Furthermore, kindly share any tools or assets you would suggest for identifying and resolving performance-related problems!

Thank you :pray: in advance.

2

Have you tuning your database as detailed in the Performance Tuning Virtuoso for RDF Queries and Other Use post ?

What does the output of running the status(); command from the Virtuoso isql command line tool report as the status of the database when running typical query workload.