After merging your PR, Conbench analyzed the 5 benchmarking runs that have been run so far on merge-commit 8d687b0.

Benchmarks with performance regressions

There was 1 possible performance regression, according to the lookback z-score method.

Benchmarks with regressions:

• Commit Run on ec2-t3-xlarge-us-east-2 at 2024-05-17 18:08:54Z
  • file-read (R) with compression=lz4, dataset=nyctaxi_2010-01, file_type=feather, language=R, output_type=table

All benchmark runs analyzed:

• Commit Run on test-mac-arm at 2024-05-17 17:39:33Z
• Commit Run on ec2-t3-xlarge-us-east-2 at 2024-05-17 18:08:54Z
• Commit Run on ec2-m5-4xlarge-us-east-2 at 2024-05-17 17:05:28Z
• Commit Run on arm64-t4g-linux-compute at 2024-05-17 18:57:05Z
• Commit Run on arm64-m6g-linux-compute at 2024-05-17 16:45:15Z

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 2024-05-17 18:57:05Z
  • BuildBooleanArrayNoNulls (C++) with source=cpp-micro, suite=arrow-builder-benchmark