After merging your PR, Conbench analyzed the 3 benchmarking runs that have been run so far on merge-commit 00e7c65.

Benchmarks with performance regressions

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

All benchmark runs analyzed:

• Commit Run on arm64-t4g-2xlarge-linux at 2024-11-03 20:02:16Z
• Commit Run on amd64-c6a-4xlarge-linux at 2024-11-03 19:46:04Z
• Commit Run on amd64-m5-4xlarge-linux at 2024-11-03 20:00:28Z

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 amd64-c6a-4xlarge-linux at 2024-11-03 19:46:04Z

  • AllocateDeallocate (C++) with params=/size:4096/real_time/threads:1, source=cpp-micro, suite=arrow-memory-pool-benchmark
  • CopyBitmapWithOffset (C++) with params=8192, source=cpp-micro, suite=arrow-bit-util-benchmark

• Commit Run on amd64-m5-4xlarge-linux at 2024-11-03 20:00:28Z

  • CheckIndexBoundsInt32 (C++) with params=1048576/0, source=cpp-micro, suite=arrow-int-util-benchmark
  • CheckIndexBoundsUInt32 (C++) with params=1048576/1000, source=cpp-micro, suite=arrow-int-util-benchmark
  • CheckIndexBoundsInt32 (C++) with params=32768/0, source=cpp-micro, suite=arrow-int-util-benchmark
  • CastUInt32ToInt32Safe (C++) with params=1048576/0, source=cpp-micro, suite=arrow-compute-scalar-cast-benchmark
  • CheckIndexBoundsUInt32 (C++) with params=32768/1000, source=cpp-micro, suite=arrow-int-util-benchmark