After merging your PR, Conbench analyzed the 4 benchmarking runs that have been run so far on merge-commit 68f1a0f.

Benchmarks with performance regressions

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

All benchmark runs analyzed:

• Commit Run on amd64-m5-4xlarge-linux at 2025-04-08 07:16:06Z
• Commit Run on amd64-c6a-4xlarge-linux at 2025-04-08 07:01:10Z
• Commit Run on arm64-t4g-2xlarge-linux at 2025-04-08 08:30:25Z
• Commit Run on test-mac-arm at 2025-04-08 07:23:46Z

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-t4g-2xlarge-linux at 2025-04-08 08:30:25Z
  • ConstructFromShortStdVector (C++) with params=<SMALL_VECTOR(std::string)>, source=cpp-micro, suite=arrow-small-vector-benchmark
  • ShortVectorInsert (C++) with params=<STATIC_VECTOR(std::string)>, source=cpp-micro, suite=arrow-small-vector-benchmark