After merging your PR, Conbench analyzed the 6 benchmarking runs that have been run so far on merge-commit 3f0b620.

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 2023-07-19 21:43:14Z
• Commit Run on ec2-m5-4xlarge-us-east-2 at 2023-07-19 21:49:58Z
• Commit Run on arm64-t4g-linux-compute at 2023-07-19 22:47:11Z
• Commit Run on arm64-m6g-linux-compute at 2023-07-20 03:37:49Z
• Commit Run on ursa-thinkcentre-m75q at 2023-07-23 16:07:20Z
• Commit Run on ursa-i9-9960x at 2023-07-28 09:28:23Z

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-linux-compute at 2023-07-19 22:47:11Z

  • params=/rows_per_batch:1000000/real_time/threads:1, source=cpp-micro, suite=arrow-acero-expression-benchmark

• Commit Run on arm64-m6g-linux-compute at 2023-07-20 03:37:49Z

  • params=num_cols:64/is_partial:1/real_time, source=cpp-micro, suite=arrow-ipc-read-write-benchmark