After merging your PR, Conbench analyzed the 5 benchmarking runs that have been run so far on merge-commit c260a24.

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 2023-11-10 04:01:17Z
• Commit Run on ec2-m5-4xlarge-us-east-2 at 2023-11-10 03:07:15Z
• Commit Run on arm64-t4g-linux-compute at 2023-11-10 03:46:45Z
• Commit Run on arm64-m6g-linux-compute at 2023-11-10 06:17:54Z
• Commit Run on ursa-thinkcentre-m75q at 2023-11-10 06:48:58Z

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 ursa-thinkcentre-m75q at 2023-11-10 06:48:58Z
  • ConstructFromShortStdVector (C++) with params=<SMALL_VECTOR(std::shared_ptr)>, source=cpp-micro, suite=arrow-small-vector-benchmark
  • ShortVectorInsert (C++) with params=<SMALL_VECTOR(int)>, source=cpp-micro, suite=arrow-small-vector-benchmark
  • BenchmarkBitmapVisitUInt64And (C++) with params=32768/1, source=cpp-micro, suite=arrow-bit-util-benchmark