[jira] [Created] (JENA-2299) RDFWriter: Rename/migrate from create(...) to source(...)

2022-03-02 Thread Andy Seaborne (Jira)
Andy Seaborne created JENA-2299: --- Summary: RDFWriter: Rename/migrate from create(...) to source(...) Key: JENA-2299 URL: https://issues.apache.org/jira/browse/JENA-2299 Project: Apache Jena Iss

[jira] [Created] (JENA-2298) Add convenience methods to RDFParser to directly read into a fresh model or dataset

2022-03-02 Thread Andy Seaborne (Jira)
Andy Seaborne created JENA-2298: --- Summary: Add convenience methods to RDFParser to directly read into a fresh model or dataset Key: JENA-2298 URL: https://issues.apache.org/jira/browse/JENA-2298 Project

[jira] [Created] (JENA-2297) Change configuration files to YAML or other similarly simple syntax

2022-03-02 Thread Wolfgang Fahl (Jira)
Wolfgang Fahl created JENA-2297: --- Summary: Change configuration files to YAML or other similarly simple syntax Key: JENA-2297 URL: https://issues.apache.org/jira/browse/JENA-2297 Project: Apache Jena

Re: Wikidata evolution

2022-03-02 Thread LB
Hm, coming back to this query SELECT * WHERE {   ?s p:P625 [ps:P625 ?o; pq:P376 ?body] } LIMIT 100 I calculated the triple pattern sizes: p:P625: ~9M ps:P625: ~9M pq:P376: ~1K Even with computing TDB stats it doesn't seem to perform well (not sure if those steps have been taken into accoun

Re: Wikidata evolution

2022-03-02 Thread Andy Seaborne
> iotops showed ~400M/s while executing the last time. Does this > performance drop really come from HDD vs SSD? Yes - it could well do. Try running the queries twice in the same server. TDB does no pre-work whatsoever so file system caching is significant. > Especially the last two > queries

Re: Wikidata evolution

2022-03-02 Thread LB
Hi all, just as a follow up I loaded Wikidata latest full into TDB2 via xloader on a different less powerful server: - 2x Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz (8 cores per cpu, 2 threads per core, -> 16C/32T) - 128GB RAM - non SSD RAID it took about 93h with  --threads 28; again I lost