On: Java BitSet performance-flicker mystery

[plasma]

I’m not a Java expert, but potentially due to the CPU/memory OS scheduler?

Try running the workload with pinned CPUs assigned and not across NUMA nodes.

[myrryr → plasma]

Try running the workload with pinned CPUs assigned ^^^--- it will be this.

I've run into the same weirdness on other things and this always solves it. Some cores are better at some things than others.

[cospaia → myrryr]

It was indeed this.