Allocate more than 4 cores (Windows?) in Neo4j

Neo4j Graph Platform
1

I just got myself an AMD Threadripper and I was looking forward to rip the benefits of its 48 cores in my Neo4j applications.

I was disappointed to notice that only four cores are utilised by Neo4j even under very heavy loads e.g. querying a graph with 150 million nodes.

I tried to find out any references on the issue and I only came upon this reference:

But it refers only to Linux and to actually (de)allocating specific cores.

In Windows (UI) the affinity of the process to processor cores can be checked/set in the details section of the Task Manager...

affinity
affinity744×453 34.8 KB

In my case all processors are selected yet regardless of the load, my queries will just be assigned four cores.

How can we change this (on Windows)?

2

What kinds of queries are you running?

Usually cypher queries are only using a single core.
In apoc there are a number of procedures that support more cores as well for querying and updates (e.g. apoc.cypher.mapParallel or apoc.periodic.iterate)

There is a parallel runtime in progress that you can try to use with cypher runtime=parallel

Graph data science can use all cores with an enterprise license.