After merging your PR, Conbench analyzed the 5 benchmarking runs that have been run so far on merge-commit c8cf61c.

Benchmarks with performance regressions

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

All benchmark runs analyzed:

• Commit Run on test-mac-arm at 2024-05-03 15:00:21Z
• Commit Run on ec2-m5-4xlarge-us-east-2 at 2024-05-03 15:02:57Z
• Commit Run on arm64-m6g-linux-compute at 2024-05-03 15:02:44Z
• Commit Run on ec2-t3-xlarge-us-east-2 at 2024-05-03 15:20:48Z
• Commit Run on arm64-t4g-linux-compute at 2024-05-03 15:34:23Z

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 test-mac-arm at 2024-05-03 15:00:21Z

  • DetectUIntWidthNulls (C++) with source=cpp-micro, suite=arrow-int-util-benchmark

• Commit Run on arm64-t4g-linux-compute at 2024-05-03 15:34:23Z

  • BitBlockCounterSum (C++) with params=512, source=cpp-micro, suite=arrow-bit-block-counter-benchmark
  • BitBlockCounterSum (C++) with params=8, source=cpp-micro, suite=arrow-bit-block-counter-benchmark
  • BitBlockCounterFourWordsSumWithOffset (C++) with params=4096, source=cpp-micro, suite=arrow-bit-block-counter-benchmark
  • BitmapReaderSum (C++) with params=64, source=cpp-micro, suite=arrow-bit-block-counter-benchmark
  • BitBlockCounterFourWordsSum (C++) with params=512, source=cpp-micro, suite=arrow-bit-block-counter-benchmark
  • BitBlockCounterFourWordsSum (C++) with params=65536, source=cpp-micro, suite=arrow-bit-block-counter-benchmark
  • BitBlockCounterFourWordsSum (C++) with params=2, source=cpp-micro, suite=arrow-bit-block-counter-benchmark
  • BitBlockCounterSumWithOffset (C++) with params=4096, source=cpp-micro, suite=arrow-bit-block-counter-benchmark
  • BitBlockCounterFourWordsSum (C++) with params=64, source=cpp-micro, suite=arrow-bit-block-counter-benchmark
  • BitBlockCounterFourWordsSumWithOffset (C++) with params=8, source=cpp-micro, suite=arrow-bit-block-counter-benchmark
  • BitBlockCounterSumWithOffset (C++) with params=64, source=cpp-micro, suite=arrow-bit-block-counter-benchmark
  • BitBlockCounterFourWordsSum (C++) with params=8, source=cpp-micro, suite=arrow-bit-block-counter-benchmark
  • BitBlockCounterSumWithOffset (C++) with params=8, source=cpp-micro, suite=arrow-bit-block-counter-benchmark
  • BitBlockCounterSumWithOffset (C++) with params=32768, source=cpp-micro, suite=arrow-bit-block-counter-benchmark
  • BitBlockCounterSumWithOffset (C++) with params=512, source=cpp-micro, suite=arrow-bit-block-counter-benchmark
  • BitBlockCounterSumWithOffset (C++) with params=2, source=cpp-micro, suite=arrow-bit-block-counter-benchmark
  • BitBlockCounterFourWordsSumWithOffset (C++) with params=2, source=cpp-micro, suite=arrow-bit-block-counter-benchmark
  • BitBlockCounterSum (C++) with params=2, source=cpp-micro, suite=arrow-bit-block-counter-benchmark
  • BitBlockCounterFourWordsSumWithOffset (C++) with params=65536, source=cpp-micro, suite=arrow-bit-block-counter-benchmark
  • BitBlockCounterFourWordsSum (C++) with params=32768, source=cpp-micro, suite=arrow-bit-block-counter-benchmark
  • BitBlockCounterFourWordsSumWithOffset (C++) with params=32768, source=cpp-micro, suite=arrow-bit-block-counter-benchmark
  • BitBlockCounterSum (C++) with params=32768, source=cpp-micro, suite=arrow-bit-block-counter-benchmark
  • BitBlockCounterSumWithOffset (C++) with params=65536, source=cpp-micro, suite=arrow-bit-block-counter-benchmark
  • BitBlockCounterSum (C++) with params=4096, source=cpp-micro, suite=arrow-bit-block-counter-benchmark
  • BitBlockCounterFourWordsSum (C++) with params=4096, source=cpp-micro, suite=arrow-bit-block-counter-benchmark
  • BitBlockCounterFourWordsSumWithOffset (C++) with params=512, source=cpp-micro, suite=arrow-bit-block-counter-benchmark
  • BitmapReaderSum (C++) with params=2, source=cpp-micro, suite=arrow-bit-block-counter-benchmark
  • BitBlockCounterSum (C++) with params=65536, source=cpp-micro, suite=arrow-bit-block-counter-benchmark