After merging your PR, Conbench analyzed the 7 benchmarking runs that have been run so far on merge-commit 74f7578.

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 2024-05-17 00:30:39Z
• Commit Run on ursa-thinkcentre-m75q at 2024-05-17 00:17:46Z
• Commit Run on ec2-m5-4xlarge-us-east-2 at 2024-05-16 23:54:48Z
• Commit Run on arm64-m6g-linux-compute at 2024-05-16 23:36:42Z
• Commit Run on ursa-i9-9960x at 2024-05-16 23:32:00Z
• Commit Run on ec2-t3-xlarge-us-east-2 at 2024-05-17 00:36:46Z
• Commit Run on arm64-t4g-linux-compute at 2024-05-17 01:49:15Z

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 2024-05-17 00:30:39Z

  • ExecuteScalarExpressionOverhead (C++) with params=complex_integer_expression/rows_per_batch:100000/real_time/threads:1, source=cpp-micro, suite=arrow-acero-expression-benchmark
  • ExecuteScalarExpressionOverhead (C++) with params=complex_expression/rows_per_batch:100000/real_time/threads:1, source=cpp-micro, suite=arrow-acero-expression-benchmark

• Commit Run on ursa-thinkcentre-m75q at 2024-05-17 00:17:46Z

  • alignBenchmark (Java) with source=java-micro, suite=arrow.vector.ipc.WriteChannelBenchmark
  • FloatRowMajorTensorConversionFixture (C++) with params=/ConvertToSparseCOOTensorInt64, source=cpp-micro, suite=arrow-tensor-conversion-benchmark
  • ReverseSetBitRunReader (C++) with params=0, source=cpp-micro, suite=arrow-bit-util-benchmark
  • MoveShortVector (C++) with params=<STD_VECTOR(std::shared_ptr)>, source=cpp-micro, suite=arrow-small-vector-benchmark
  • FloatColumnMajorTensorConversionFixture (C++) with params=/ConvertToSparseCOOTensorInt64, source=cpp-micro, suite=arrow-tensor-conversion-benchmark

• Commit Run on ec2-m5-4xlarge-us-east-2 at 2024-05-16 23:54:48Z

  • alignBenchmark (Java) with source=java-micro, suite=arrow.vector.ipc.WriteChannelBenchmark

• Commit Run on arm64-t4g-linux-compute at 2024-05-17 01:49:15Z

  • ValidateSmallAlmostAscii (C++) with source=cpp-micro, suite=arrow-utf8-util-benchmark
  • ValidateLargeNonAscii (C++) with source=cpp-micro, suite=arrow-utf8-util-benchmark
  • ValidateLargeAlmostAscii (C++) with source=cpp-micro, suite=arrow-utf8-util-benchmark
  • CopyEmptyVector (C++) with params=<STATIC_VECTOR(std::shared_ptr)>, source=cpp-micro, suite=arrow-small-vector-benchmark
  • ValidateSmallNonAscii (C++) with source=cpp-micro, suite=arrow-utf8-util-benchmark