After merging your PR, Conbench analyzed the 4 benchmarking runs that have been run so far on merge-commit f5f8f58.

Benchmarks with performance regressions

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

All benchmark runs analyzed:

• Commit Run on test-mac-arm at 2024-08-12 21:16:41Z
• Commit Run on ec2-c6a-4xlarge-us-east-2 at 2024-08-12 18:23:48Z
• Commit Run on arm64-t4g-linux-compute at 2024-08-12 19:46:13Z
• Commit Run on ec2-m5-4xlarge-us-east-2 at 2024-08-12 21:49:33Z

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 2024-08-12 18:23:48Z
  • HashIntegers (C++) with source=cpp-micro, suite=arrow-hashing-benchmark
  • BM_FindExistingHash (C++) with source=cpp-micro, suite=parquet-bloom-filter-benchmark
  • ChunkCSVEscapedBlock (C++) with source=cpp-micro, suite=arrow-csv-parser-benchmark