After merging your PR, Conbench analyzed the 7 benchmarking runs that have been run so far on merge-commit 9749d7d.

Benchmarks with performance regressions

There was 1 possible performance regression, according to the lookback z-score method.

Benchmarks with regressions:

• Commit Run on ursa-i9-9960x at 2024-05-03 01:10:02Z
  • tpch (R) with engine=arrow, format=parquet, language=R, memory_map=False, query_id=TPCH-08, scale_factor=1

All benchmark runs analyzed:

• Commit Run on ec2-t3-xlarge-us-east-2 at 2024-05-03 04:09:11Z
• Commit Run on ursa-i9-9960x at 2024-05-03 01:10:02Z
• Commit Run on test-mac-arm at 2024-05-03 02:10:59Z
• Commit Run on ec2-m5-4xlarge-us-east-2 at 2024-05-03 01:53:54Z
• Commit Run on arm64-t4g-linux-compute at 2024-05-03 02:42:44Z
• Commit Run on ursa-thinkcentre-m75q at 2024-05-03 02:34:08Z
• Commit Run on arm64-m6g-linux-compute at 2024-05-03 01:16:33Z

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 2024-05-03 02:10:59Z

  • FloatColumnMajorMatrixConversionFixture (C++) with params=/ConvertToSparseCSRMatrixInt64, source=cpp-micro, suite=arrow-tensor-conversion-benchmark
  • DoubleRowMajorMatrixConversionFixture (C++) with params=/ConvertToSparseCSRMatrixInt64, source=cpp-micro, suite=arrow-tensor-conversion-benchmark
  • DoubleColumnMajorMatrixConversionFixture (C++) with params=/ConvertToSparseCSCMatrixInt32, source=cpp-micro, suite=arrow-tensor-conversion-benchmark
  • DoubleColumnMajorMatrixConversionFixture (C++) with params=/ConvertToSparseCSRMatrixInt64, source=cpp-micro, suite=arrow-tensor-conversion-benchmark
  • DoubleRowMajorMatrixConversionFixture (C++) with params=/ConvertToSparseCSCMatrixInt32, source=cpp-micro, suite=arrow-tensor-conversion-benchmark
  • DoubleRowMajorMatrixConversionFixture (C++) with params=/ConvertToSparseCSRMatrixInt32, source=cpp-micro, suite=arrow-tensor-conversion-benchmark
  • DoubleRowMajorMatrixConversionFixture (C++) with params=/ConvertToSparseCSCMatrixInt64, source=cpp-micro, suite=arrow-tensor-conversion-benchmark
  • FloatColumnMajorMatrixConversionFixture (C++) with params=/ConvertToSparseCSCMatrixInt64, source=cpp-micro, suite=arrow-tensor-conversion-benchmark
  • DoubleColumnMajorMatrixConversionFixture (C++) with params=/ConvertToSparseCSRMatrixInt32, source=cpp-micro, suite=arrow-tensor-conversion-benchmark
  • FloatRowMajorMatrixConversionFixture (C++) with params=/ConvertToSparseCSRMatrixInt64, source=cpp-micro, suite=arrow-tensor-conversion-benchmark
  • Int8ColumnMajorMatrixConversionFixture (C++) with params=/ConvertToSparseCSRMatrixInt16, source=cpp-micro, suite=arrow-tensor-conversion-benchmark
  • Int8StridedMatrixConversionFixture (C++) with params=/ConvertToSparseCSCMatrixInt64, source=cpp-micro, suite=arrow-tensor-conversion-benchmark
  • Int8RowMajorMatrixConversionFixture (C++) with params=/ConvertToSparseCSRMatrixInt8, source=cpp-micro, suite=arrow-tensor-conversion-benchmark
  • FloatStridedMatrixConversionFixture (C++) with params=/ConvertToSparseCSCMatrixInt64, source=cpp-micro, suite=arrow-tensor-conversion-benchmark
  • FloatRowMajorMatrixConversionFixture (C++) with params=/ConvertToSparseCSRMatrixInt32, source=cpp-micro, suite=arrow-tensor-conversion-benchmark
  • Int8RowMajorMatrixConversionFixture (C++) with params=/ConvertToSparseCSCMatrixInt64, source=cpp-micro, suite=arrow-tensor-conversion-benchmark
  • DoubleColumnMajorMatrixConversionFixture (C++) with params=/ConvertToSparseCSCMatrixInt64, source=cpp-micro, suite=arrow-tensor-conversion-benchmark
  • Int8StridedMatrixConversionFixture (C++) with params=/ConvertToSparseCSRMatrixInt16, source=cpp-micro, suite=arrow-tensor-conversion-benchmark
  • FloatStridedMatrixConversionFixture (C++) with params=/ConvertToSparseCSRMatrixInt64, source=cpp-micro, suite=arrow-tensor-conversion-benchmark
  • FloatRowMajorMatrixConversionFixture (C++) with params=/ConvertToSparseCSCMatrixInt64, source=cpp-micro, suite=arrow-tensor-conversion-benchmark
  • FloatColumnMajorMatrixConversionFixture (C++) with params=/ConvertToSparseCSCMatrixInt32, source=cpp-micro, suite=arrow-tensor-conversion-benchmark
  • FloatRowMajorMatrixConversionFixture (C++) with params=/ConvertToSparseCSCMatrixInt32, source=cpp-micro, suite=arrow-tensor-conversion-benchmark
  • DoubleStridedMatrixConversionFixture (C++) with params=/ConvertToSparseCSRMatrixInt32, source=cpp-micro, suite=arrow-tensor-conversion-benchmark
  • DoubleStridedMatrixConversionFixture (C++) with params=/ConvertToSparseCSRMatrixInt64, source=cpp-micro, suite=arrow-tensor-conversion-benchmark
  • DoubleStridedMatrixConversionFixture (C++) with params=/ConvertToSparseCSCMatrixInt32, source=cpp-micro, suite=arrow-tensor-conversion-benchmark
  • Int8RowMajorMatrixConversionFixture (C++) with params=/ConvertToSparseCSCMatrixInt32, source=cpp-micro, suite=arrow-tensor-conversion-benchmark
  • Int8StridedMatrixConversionFixture (C++) with params=/ConvertToSparseCSCMatrixInt32, source=cpp-micro, suite=arrow-tensor-conversion-benchmark
  • Int8ColumnMajorMatrixConversionFixture (C++) with params=/ConvertToSparseCSCMatrixInt64, source=cpp-micro, suite=arrow-tensor-conversion-benchmark
  • Int8RowMajorMatrixConversionFixture (C++) with params=/ConvertToSparseCSRMatrixInt16, source=cpp-micro, suite=arrow-tensor-conversion-benchmark
  • Int8ColumnMajorMatrixConversionFixture (C++) with params=/ConvertToSparseCSCMatrixInt32, source=cpp-micro, suite=arrow-tensor-conversion-benchmark
  • FloatStridedMatrixConversionFixture (C++) with params=/ConvertToSparseCSRMatrixInt32, source=cpp-micro, suite=arrow-tensor-conversion-benchmark
  • DoubleStridedMatrixConversionFixture (C++) with params=/ConvertToSparseCSCMatrixInt64, source=cpp-micro, suite=arrow-tensor-conversion-benchmark
  • Int8StridedMatrixConversionFixture (C++) with params=/ConvertToSparseCSRMatrixInt8, source=cpp-micro, suite=arrow-tensor-conversion-benchmark
  • FloatColumnMajorMatrixConversionFixture (C++) with params=/ConvertToSparseCSRMatrixInt32, source=cpp-micro, suite=arrow-tensor-conversion-benchmark
  • FloatStridedMatrixConversionFixture (C++) with params=/ConvertToSparseCSCMatrixInt32, source=cpp-micro, suite=arrow-tensor-conversion-benchmark
  • Int8ColumnMajorMatrixConversionFixture (C++) with params=/ConvertToSparseCSRMatrixInt8, source=cpp-micro, suite=arrow-tensor-conversion-benchmark

• Commit Run on ursa-thinkcentre-m75q at 2024-05-03 02:34:08Z

  • ConstructFromShortStdVector (C++) with params=<STATIC_VECTOR(std::string)>, source=cpp-micro, suite=arrow-small-vector-benchmark
  • BenchmarkTemporalRounding (C++) with params=<FloorTemporal, non_zoned, round_10_week>/524288/0, source=cpp-micro, suite=arrow-compute-scalar-temporal-benchmark
  • CopyShortVector (C++) with params=<STATIC_VECTOR(int)>, source=cpp-micro, suite=arrow-small-vector-benchmark
  • BM_BatchComputeHash (C++) with params=, source=cpp-micro, suite=parquet-bloom-filter-benchmark
  • MoveShortVector (C++) with params=<STATIC_VECTOR(int)>, source=cpp-micro, suite=arrow-small-vector-benchmark