After merging your PR, Conbench analyzed the 6 benchmarking runs that have been run so far on merge-commit c9674bc.

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-t3-xlarge-us-east-2 at 2023-09-28 12:13:16Z
• Commit Run on arm64-m6g-linux-compute at 2023-09-28 12:49:17Z
• Commit Run on ec2-m5-4xlarge-us-east-2 at 2023-09-28 12:21:02Z
• Commit Run on arm64-t4g-linux-compute at 2023-09-28 12:52:23Z
• Commit Run on ursa-thinkcentre-m75q at 2023-09-28 14:06:12Z
• Commit Run on ursa-i9-9960x at 2023-09-28 12:07:19Z

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-m6g-linux-compute at 2023-09-28 12:49:17Z

  • ReadMmapUncachedFile (C++) with params=num_cols:8/is_partial:1/real_time, source=cpp-micro, suite=arrow-ipc-read-write-benchmark

• Commit Run on ursa-thinkcentre-m75q at 2023-09-28 14:06:12Z

  • BM_DeltaBitPackingEncode_Int32_Wide (C++) with params=32768, source=cpp-micro, suite=parquet-encoding-benchmark
  • GetAllFragments (C++) with source=cpp-micro, suite=arrow-dataset-file-benchmark