After merging your PR, Conbench analyzed the 6 benchmarking runs that have been run so far on merge-commit 0d128c6.

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-m5-4xlarge-us-east-2 at 2024-01-16 04:00:15Z
• Commit Run on ursa-i9-9960x at 2024-01-16 02:08:16Z
• Commit Run on arm64-m6g-linux-compute at 2024-01-16 09:02:40Z
• Commit Run on ec2-t3-xlarge-us-east-2 at 2024-01-16 05:30:01Z
• Commit Run on arm64-t4g-linux-compute at 2024-01-16 04:44:49Z
• Commit Run on ursa-thinkcentre-m75q at 2024-01-16 10:11:16Z

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 2024-01-16 09:02:40Z

  • ReadMmapUncachedFileAsync (C++) with params=num_cols:64/is_partial:1/real_time, source=cpp-micro, suite=arrow-ipc-read-write-benchmark

• Commit Run on ursa-thinkcentre-m75q at 2024-01-16 10:11:16Z

  • ConstructFromEmptyStdVector (C++) with params=<STATIC_VECTOR(std::shared_ptr)>, source=cpp-micro, suite=arrow-small-vector-benchmark