After merging your PR, Conbench analyzed the 5 benchmarking runs that have been run so far on merge-commit cdc95c2.

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-m5-4xlarge-us-east-2 at 2023-09-07 22:40:07Z
• Commit Run on arm64-t4g-linux-compute at 2023-09-07 23:34:47Z
• Commit Run on ec2-t3-xlarge-us-east-2 at 2023-09-07 22:18:41Z
• Commit Run on arm64-m6g-linux-compute at 2023-09-08 02:32:32Z
• Commit Run on ursa-thinkcentre-m75q at 2023-09-09 03:15:53Z

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 2023-09-09 03:15:53Z
  • ConstructFromEmptyStdVector (C++) with params=<SMALL_VECTOR(std::string)>, source=cpp-micro, suite=arrow-small-vector-benchmark
  • BitmapReaderSum (C++) with params=512, source=cpp-micro, suite=arrow-bit-block-counter-benchmark