After merging your PR, Conbench analyzed the 5 benchmarking runs that have been run so far on merge-commit 3f4aeab.

Benchmarks with performance regressions

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

All benchmark runs analyzed:

• Commit Run on ec2-t3-xlarge-us-east-2 at 2023-10-26 05:12:24Z
• Commit Run on ec2-m5-4xlarge-us-east-2 at 2023-10-26 05:23:28Z
• Commit Run on arm64-t4g-linux-compute at 2023-10-26 06:00:30Z
• Commit Run on arm64-m6g-linux-compute at 2023-10-26 08:19:14Z
• Commit Run on ursa-thinkcentre-m75q at 2023-10-27 08:56:21Z

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-m6g-linux-compute at 2023-10-26 08:19:14Z

  • BinaryMathOpMultiply128 (C++) with source=cpp-micro, suite=arrow-decimal-benchmark
  • ReadUncachedFileAsync (C++) with params=num_cols:64/is_partial:1/real_time, source=cpp-micro, suite=arrow-ipc-read-write-benchmark

• Commit Run on ursa-thinkcentre-m75q at 2023-10-27 08:56:21Z

  • ArrayArrayKernel (C++) with params=<Subtract, UInt8Type>/size:524288/inverse_null_proportion:100, source=cpp-micro, suite=arrow-compute-scalar-arithmetic-benchmark
  • BM_DeltaBitPackingEncode_Int64_Narrow (C++) with params=4096, source=cpp-micro, suite=parquet-encoding-benchmark
  • BM_DeltaBitPackingEncode_Int64_Narrow (C++) with params=1024, source=cpp-micro, suite=parquet-encoding-benchmark