After merging your PR, Conbench analyzed the 4 benchmarking runs that have been run so far on merge-commit ce251a6.

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-c6a-4xlarge-us-east-2 at 2024-08-14 04:42:17Z
• Commit Run on arm64-t4g-linux-compute at 2024-08-14 11:03:48Z
• Commit Run on ec2-m5-4xlarge-us-east-2 at 2024-08-14 09:09:01Z
• Commit Run on test-mac-arm at 2024-08-14 16:29:19Z

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 ec2-c6a-4xlarge-us-east-2 at 2024-08-14 04:42:17Z
  • ShortVectorInsert (C++) with params=<STATIC_VECTOR(std::string)>, source=cpp-micro, suite=arrow-small-vector-benchmark