After merging your PR, Conbench analyzed the 5 benchmarking runs that have been run so far on merge-commit a4fae02.

Benchmarks with performance regressions

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

All benchmark runs analyzed:

• Commit Run on arm64-t4g-linux-compute at 2023-12-14 18:35:04Z
• Commit Run on ec2-t3-xlarge-us-east-2 at 2023-12-14 17:55:43Z
• Commit Run on ec2-m5-4xlarge-us-east-2 at 2023-12-14 17:48:14Z
• Commit Run on arm64-m6g-linux-compute at 2023-12-14 20:12:24Z
• Commit Run on ursa-thinkcentre-m75q at 2023-12-14 23:44:45Z

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 2023-12-14 20:12:24Z

  • BenchmarkBitmapAnd (C++) with params=131072/0, source=cpp-micro, suite=arrow-bit-util-benchmark
  • BitRunReaderLinear (C++) with params=99, source=cpp-micro, suite=arrow-bit-util-benchmark

• Commit Run on ursa-thinkcentre-m75q at 2023-12-14 23:44:45Z

  • BM_ArrowBinaryPlain (C++) with params=EncodeArrow/262144, source=cpp-micro, suite=parquet-encoding-benchmark
  • BM_ArrowBinaryPlain (C++) with params=EncodeArrow/1048576, source=cpp-micro, suite=parquet-encoding-benchmark
  • ShortVectorPushBack (C++) with params=<SMALL_VECTOR(int)>, source=cpp-micro, suite=arrow-small-vector-benchmark
  • BitRunReader (C++) with params=0, source=cpp-micro, suite=arrow-bit-util-benchmark
  • setWithWriter (Java) with source=java-micro, suite=arrow.vector.IntBenchmarks