NUMA Regression 5.18

Benchmarks by Michael Larabel reproducing regression from https://www.phoronix.com/scan.php?page=news_item&px=Linux-518-Stress-NUMA-Goes-Boom on the system in 2022-05-28 state across v5.17 to v5.18, still present on Linux Gity, and testing the Linux Git with patch from https://lore.kernel.org/lkml/YhUI1wUtV8yguijO@fuller.cnet/T/#m172e8b7b57fdbed3aceca6fc667cdbf85e2af49b. Patch seems to resolve the stress-ng NUMA performance.

Compare your own system(s) to this result file with the Phoronix Test Suite by running the command: phoronix-test-suite benchmark 2205284-PTS-NUMAREGR17
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Result
Identifier
Performance Per
Dollar
Date
Run
  Test
  Duration
v5.17
May 28 2022
  2 Minutes
v5.18
May 28 2022
  7 Minutes
20220528 Git
May 28 2022
  8 Minutes
20220528 Git + sched-rcu-exped patch
May 28 2022
  2 Minutes
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  5 Minutes

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NUMA Regression 5.18 Suite 1.0.0 System Test suite extracted from NUMA Regression 5.18. pts/stress-ng-1.5.1 --numa 0 Test: NUMA