After merging your PR, Conbench analyzed the 4 benchmarking runs that have been run so far on merge-commit ad136d8.

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 2024-10-04 11:44:28Z
• Commit Run on arm64-t4g-2xlarge-linux at 2024-10-04 12:01:18Z
• Commit Run on amd64-m5-4xlarge-linux at 2024-10-04 11:56:45Z
• Commit Run on test-mac-arm at 2024-10-04 12:03:10Z

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 2024-10-04 11:44:28Z
  • ErrorSchemeBool (C++) with source=cpp-micro, suite=arrow-type-benchmark
  • ErrorSchemeStatus (C++) with source=cpp-micro, suite=arrow-type-benchmark
  • ErrorSchemeException (C++) with source=cpp-micro, suite=arrow-type-benchmark
  • BitRunReaderLinear (C++) with params=0, source=cpp-micro, suite=arrow-bit-util-benchmark
  • ReferenceWorkloadCost (C++) with params=task_cost:100000/real_time, source=cpp-micro, suite=arrow-thread-pool-benchmark
  • SetBitRunReader (C++) with params=-1, source=cpp-micro, suite=arrow-bit-util-benchmark
  • BitRunReaderLinear (C++) with params=-1, source=cpp-micro, suite=arrow-bit-util-benchmark