After merging your PR, Conbench analyzed the 4 benchmarking runs that have been run so far on merge-commit bc923bd.

Benchmarks with performance regressions

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

All benchmark runs analyzed:

• Commit Run on amd64-c6a-4xlarge-linux at 2024-09-26 07:10:51Z
• Commit Run on arm64-t4g-2xlarge-linux at 2024-09-26 07:29:42Z
• Commit Run on test-mac-arm at 2024-09-26 07:30:08Z
• Commit Run on amd64-m5-4xlarge-linux at 2024-09-26 07:22:41Z

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 amd64-c6a-4xlarge-linux at 2024-09-26 07:10:51Z

  • BenchmarkTemporalBinary (C++) with params=<YearsBetween, zoned>/524288/100, source=cpp-micro, suite=arrow-compute-scalar-temporal-benchmark
  • BenchmarkTemporalBinary (C++) with params=<QuartersBetween, zoned>/524288/100, source=cpp-micro, suite=arrow-compute-scalar-temporal-benchmark
  • BuildFixedSizeBinaryArray (C++) with source=cpp-micro, suite=arrow-builder-benchmark

• Commit Run on arm64-t4g-2xlarge-linux at 2024-09-26 07:29:42Z

  • BenchmarkTemporalBinary (C++) with params=<YearsBetween, non_zoned>/1048576/0, source=cpp-micro, suite=arrow-compute-scalar-temporal-benchmark
  • BenchmarkTemporalBinary (C++) with params=<YearsBetween, date64_type>/1048576/0, source=cpp-micro, suite=arrow-compute-scalar-temporal-benchmark

• Commit Run on test-mac-arm at 2024-09-26 07:30:08Z

  • ResolveManyUInt64Sorted (C++) with params=chunked_array_length:65535/num_chunks:100/num_indices:32764, source=cpp-micro, suite=arrow-chunk-resolver-benchmark
  • InlinedTrieLookupNotFound (C++) with source=cpp-micro, suite=arrow-trie-benchmark
  • ResolveManyUInt64Sorted (C++) with params=chunked_array_length:65535/num_chunks:10000/num_indices:32764, source=cpp-micro, suite=arrow-chunk-resolver-benchmark
  • BM_PlainEncodingBoolean (C++) with params=32768, source=cpp-micro, suite=parquet-encoding-benchmark