After merging your PR, Conbench analyzed the 4 benchmarking runs that have been run so far on merge-commit c3a0bd2.

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 2024-09-16 22:29:33Z
• Commit Run on arm64-t4g-2xlarge-linux at 2024-09-16 22:46:58Z
• Commit Run on amd64-m5-4xlarge-linux at 2024-09-16 22:42:08Z
• Commit Run on test-mac-arm at 2024-09-16 22:47:36Z

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 2024-09-16 22:29:33Z

  • IntegerParsing (C++) with params=, source=cpp-micro, suite=arrow-value-parsing-benchmark
  • ShortVectorPushBack (C++) with params=<STD_VECTOR(std::string)>, source=cpp-micro, suite=arrow-small-vector-benchmark
  • BitmapUInt64Reader (C++) with params=8192, source=cpp-micro, suite=arrow-bit-util-benchmark

• Commit Run on arm64-t4g-2xlarge-linux at 2024-09-16 22:46:58Z

  • BitmapReaderSumWithOffset (C++) with params=64, source=cpp-micro, suite=arrow-bit-block-counter-benchmark