After merging your PR, Conbench analyzed the 6 benchmarking runs that have been run so far on merge-commit 0640f94.

Benchmarks with performance regressions

There were 0 possible performance regressions, according to the lookback z-score method.

All benchmark runs analyzed:

• Commit Run on ursa-i9-9960x at 2023-10-13 04:40:43Z
• Commit Run on ec2-m5-4xlarge-us-east-2 at 2023-10-12 16:07:04Z
• Commit Run on ec2-t3-xlarge-us-east-2 at 2023-10-12 16:00:55Z
• Commit Run on arm64-t4g-linux-compute at 2023-10-12 16:51:42Z
• Commit Run on arm64-m6g-linux-compute at 2023-10-14 05:48:12Z
• Commit Run on ursa-thinkcentre-m75q at 2023-10-16 08:20:46Z

Unstable benchmarks with performance regressions

The following benchmark results indicate a possible performance regression, but are known to sometimes produce false positives when applying the lookback z-score analysis.

• Commit Run on arm64-t4g-linux-compute at 2023-10-12 16:51:42Z

  • BitBlockCounterFourWordsSum (C++) with params=32768, source=cpp-micro, suite=arrow-bit-block-counter-benchmark

• Commit Run on ursa-thinkcentre-m75q at 2023-10-16 08:20:46Z

  • ArrayArrayKernel (C++) with params=<Multiply, Int64Type>/size:524288/inverse_null_proportion:0, source=cpp-micro, suite=arrow-compute-scalar-arithmetic-benchmark
  • ArrayArrayKernel (C++) with params=<Multiply, Int64Type>/size:524288/inverse_null_proportion:100, source=cpp-micro, suite=arrow-compute-scalar-arithmetic-benchmark
  • Constants (C++) with source=cpp-micro, suite=arrow-decimal-benchmark
  • GetAllFragments (C++) with source=cpp-micro, suite=arrow-dataset-file-benchmark