After merging your PR, Conbench analyzed the 4 benchmarking runs that have been run so far on merge-commit caa7056.

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-t4g-2xlarge-linux at 2025-01-15 08:46:56Z
• Commit Run on amd64-c6a-4xlarge-linux at 2025-01-14 00:00:56Z
• Commit Run on amd64-m5-4xlarge-linux at 2025-01-14 14:56:35Z
• Commit Run on test-mac-arm at 2025-01-16 12:31:42Z

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 2025-01-15 08:46:56Z

  • TouchArea (C++) with params=size:4096/real_time/threads:1, source=cpp-micro, suite=arrow-memory-pool-benchmark

• Commit Run on test-mac-arm at 2025-01-16 12:31:42Z

  • CastInt64ToInt32Safe (C++) with params=4194304/0, source=cpp-micro, suite=arrow-compute-scalar-cast-benchmark
  • GrouperWithMultiTypes (C++) with params="{int32}"/1024/10000, source=cpp-micro, suite=arrow-compute-grouper-benchmark
  • BuildInlineBinaryViewArray (C++) with source=cpp-micro, suite=arrow-builder-benchmark