Merge pull request #80 from Fedict/issues/#1271-client-cpu

Added documentation on jdk bug
eclipse-rdf4j · Feb 10, 2019 · 6ecbe00 · 6ecbe00
2 parents 99db3a3 + ab4f03f
commit 6ecbe00
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/doc/programming/03-repository-api.adoc b/doc/programming/03-repository-api.adoc
@@ -164,6 +164,13 @@ Repository repo = new HTTPRepository(rdf4jServer, repositoryID);
 repo.initialize();
 ----
 
+Note: some OpenJDK 8 JVMs have a 
+[ScheduledThreadPoolExecutor bug](https://bugs.openjdk.java.net/browse/JDK-8129861), 
+causing high processor load even when idling.
+
+Setting the property `-Dorg.eclipse.rdf4j.client.executors.jdkbug`
+will use 1 core thread (instead of 0) for clients to remediate this.
+
 === Accessing a SPARQL endpoint
 
 We can use the Repository interface to access any SPARQL endpoint as well. This is done as follows: