After merging your PR, Conbench analyzed the 4 benchmarking runs that have been run so far on merge-commit d75269f.

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-m6g-linux-compute at 2024-01-03 11:08:56Z
• Commit Run on ec2-t3-xlarge-us-east-2 at 2024-01-03 11:17:27Z
• Commit Run on arm64-t4g-linux-compute at 2024-01-03 11:12:54Z
• Commit Run on ec2-m5-4xlarge-us-east-2 at 2024-01-03 10:23:35Z

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 2024-01-03 11:08:56Z
  • MoveEmptyVector (C++) with params=<SMALL_VECTOR(std::string)>, source=cpp-micro, suite=arrow-small-vector-benchmark