Graphdb

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Harold Guildford

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Jan 25, 2024, 6:12:28 AM1/25/24

to irtsedbilhu

Clearing a named graph with many triples through rdf4j with clear(context) function is slow.Even, manually deleting a named graph through the graphdb interface :7200/graphs is slow.I tried to play with the JVM memory according to those guidelines. My server has 64GB RAM, and I am calling graphdb with 40GB JVM memory, the 'graphdb.page.cache.size' is being set to default value '17.8G' :

I have GraphDb (standlone server version) in Ubuntu Server 16 running in localhost (with the command ./graphdb -d in /etc/graphdb/bin). But I only have ssh access to the server in the terminal, can't open Worbench in localhost:7200 locally.

graphdb

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PS: two extra questions related: a) For creating an URI endpoint it is the same procedure? b) For GraphDB daemon to start automattically at boot time (with the command ./graphdb -d in graph/bin folder), what is the recommended way and configuration? (tryed the line "/etc/graphdb/bin ./graphdb -d" in rc.local but it didn't worked).

[ERROR] Failed to execute goal org.codehaus.mojo:exec-maven-plugin:1.6.0:java (default-cli) on project my-first-app: An exception occured while executing the Java class. org.eclipse.rdf4j.sail.SailException: Repository under /opt/maven-graphdb-test/graphdb-free-8.4.0/data/repositories/test/storage is currently in use (we failed to lock its lockfile: /opt/maven-graphdb-test/graphdb-free-8.4.0/data/repositories/test/storage/lock)!