After merging your PR, Conbench analyzed the 5 benchmarking runs that have been run so far on merge-commit f325ce9.

Benchmarks with performance regressions

There were 0 possible performance regressions, according to the lookback z-score method.

All benchmark runs analyzed:

• Commit Run on ursa-thinkcentre-m75q at 2023-10-17 16:08:23Z
• Commit Run on ec2-m5-4xlarge-us-east-2 at 2023-10-16 09:44:19Z
• Commit Run on ec2-t3-xlarge-us-east-2 at 2023-10-16 09:35:23Z
• Commit Run on arm64-t4g-linux-compute at 2023-10-16 10:18:51Z
• Commit Run on arm64-m6g-linux-compute at 2023-10-16 10:14:28Z

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 2023-10-17 16:08:23Z
  • BM_ExecSpanIterator (C++) with params=16384, source=cpp-micro, suite=arrow-compute-function-benchmark
  • BM_ExecSpanIterator (C++) with params=4096, source=cpp-micro, suite=arrow-compute-function-benchmark
  • BM_ExecSpanIterator (C++) with params=1024, source=cpp-micro, suite=arrow-compute-function-benchmark
  • CopyEmptyVector (C++) with params=<SMALL_VECTOR(std::shared_ptr)>, source=cpp-micro, suite=arrow-small-vector-benchmark