After merging your PR, Conbench analyzed the 7 benchmarking runs that have been run so far on merge-commit 640c101.

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 2024-04-04 11:28:06Z
• Commit Run on ursa-i9-9960x at 2024-04-04 12:57:24Z
• Commit Run on ec2-m5-4xlarge-us-east-2 at 2024-04-04 11:05:20Z
• Commit Run on ec2-t3-xlarge-us-east-2 at 2024-04-04 10:14:40Z
• Commit Run on arm64-t4g-linux-compute at 2024-04-04 11:58:11Z
• Commit Run on arm64-m6g-linux-compute at 2024-04-04 14:44:45Z
• Commit Run on ursa-thinkcentre-m75q at 2024-04-04 21:53:18Z

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 test-mac-arm at 2024-04-04 11:28:06Z

  • RoundArrayBenchmark (C++) with params=<Round, Int32Type, RoundMode::DOWN>/size:4194304/inverse_null_proportion:0, source=cpp-micro, suite=arrow-compute-scalar-round-benchmark
  • ChunkCSVQuotedBlock (C++) with source=cpp-micro, suite=arrow-csv-parser-benchmark

• Commit Run on ursa-thinkcentre-m75q at 2024-04-04 21:53:18Z

  • RoundArrayBenchmark (C++) with params=<Round, Int64Type, RoundMode::DOWN>/size:524288/inverse_null_proportion:0, source=cpp-micro, suite=arrow-compute-scalar-round-benchmark
  • UniqueString100bytes (C++) with params=2, source=cpp-micro, suite=arrow-compute-vector-hash-benchmark
  • UniqueString100bytes (C++) with params=3, source=cpp-micro, suite=arrow-compute-vector-hash-benchmark
  • UniqueString100bytes (C++) with params=4, source=cpp-micro, suite=arrow-compute-vector-hash-benchmark