Java BitSet performance-flicker mystery

Re:Java BitSet performance-flicker mystery by cospaia on Sunday February 06, 2022 @06:49PM (#30238363)

I had this issue using JDK17 and 18 as well, so at least by default things are not better. =)

I wonder if there is a way that does not involve using `numactl`. It needs the container to run in privileged mode and that is not how the containers are run in the drag-racing benchmark...

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Re:Java BitSet performance-flicker mystery by CraigJPerry on Sunday February 06, 2022 @07:52PM (#30238790)

Can you use the jvm’s -xx:+UseNUMA option instead?

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Re:Java BitSet performance-flicker mystery by cospaia on Tuesday February 08, 2022 @04:08PM (#30264730)

Thanks! It does and it does not. Here's 100 rounds where it does: https://github.com/PEZ/ghost-chase-condition/tree/master/tes...

But in other cases I have it seems to not help that much. Not sure how to minimize those, but will try figure it out.

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