After merging your PR, Conbench analyzed the 4 benchmarking runs that have been run so far on merge-commit c6be2df.

Benchmarks with performance regressions

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

Benchmarks with regressions:

• Commit Run on test-mac-arm at 2024-07-31 19:31:40Z
  • tpch (R) with engine=arrow, format=native, language=R, memory_map=False, query_id=TPCH-18, scale_factor=1

All benchmark runs analyzed:

• Commit Run on ec2-m5-4xlarge-us-east-2 at 2024-07-31 21:05:24Z
• Commit Run on ec2-c6a-4xlarge-us-east-2 at 2024-07-31 19:29:18Z
• Commit Run on arm64-t4g-linux-compute at 2024-07-31 21:05:22Z
• Commit Run on test-mac-arm at 2024-07-31 19:31:40Z

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 2024-07-31 19:31:40Z
  • BenchmarkTemporalRounding (C++) with params=<FloorTemporal, zoned, round_1_month>/4194304/100, source=cpp-micro, suite=arrow-compute-scalar-temporal-benchmark
  • BenchmarkTemporal (C++) with params=<Month, zoned>/4194304/0, source=cpp-micro, suite=arrow-compute-scalar-temporal-benchmark
  • BenchmarkTemporal (C++) with params=<ISOWeek, zoned>/4194304/0, source=cpp-micro, suite=arrow-compute-scalar-temporal-benchmark
  • BenchmarkTemporal (C++) with params=<DayOfYear, zoned>/4194304/0, source=cpp-micro, suite=arrow-compute-scalar-temporal-benchmark
  • ErrorSchemeNoError (C++) with source=cpp-micro, suite=arrow-type-benchmark
  • ReferenceCompression (C++) with params=Compression::LZ4, source=cpp-micro, suite=arrow-compression-benchmark
  • BenchmarkTemporal (C++) with params=<USWeek, zoned>/4194304/0, source=cpp-micro, suite=arrow-compute-scalar-temporal-benchmark
  • BitmapReaderSumWithOffset (C++) with params=32768, source=cpp-micro, suite=arrow-bit-block-counter-benchmark
  • BenchmarkTemporalRounding (C++) with params=<CeilTemporal, zoned, round_10_month>/4194304/0, source=cpp-micro, suite=arrow-compute-scalar-temporal-benchmark
  • ErrorSchemeBool (C++) with source=cpp-micro, suite=arrow-type-benchmark
  • BenchmarkTemporal (C++) with params=<DayOfYear, zoned>/4194304/100, source=cpp-micro, suite=arrow-compute-scalar-temporal-benchmark
  • RecordBatchSortIndicesInt64Narrow (C++) with params=1048576/100/8, source=cpp-micro, suite=arrow-compute-vector-sort-benchmark
  • BenchmarkTemporal (C++) with params=<Day, zoned>/4194304/100, source=cpp-micro, suite=arrow-compute-scalar-temporal-benchmark
  • TakeStringRandomIndicesWithNulls (C++) with params=4194304/2, source=cpp-micro, suite=arrow-compute-vector-selection-benchmark
  • BenchmarkTemporal (C++) with params=<Quarter, zoned>/4194304/0, source=cpp-micro, suite=arrow-compute-scalar-temporal-benchmark
  • TakeChunkedChunkedFSBRandomIndicesNoNulls (C++) with params=4194304/1000/9, source=cpp-micro, suite=arrow-compute-vector-selection-benchmark
  • CastDoubleToInt32Safe (C++) with params=4194304/1000, source=cpp-micro, suite=arrow-compute-scalar-cast-benchmark
  • BenchmarkTemporalRounding (C++) with params=<CeilTemporal, zoned, round_1_month>/4194304/0, source=cpp-micro, suite=arrow-compute-scalar-temporal-benchmark
  • BenchmarkTemporal (C++) with params=<USWeek, zoned>/4194304/100, source=cpp-micro, suite=arrow-compute-scalar-temporal-benchmark
  • BenchmarkTemporal (C++) with params=<Quarter, zoned>/4194304/100, source=cpp-micro, suite=arrow-compute-scalar-temporal-benchmark
  • BenchmarkTemporalRounding (C++) with params=<CeilTemporal, zoned, round_10_month>/4194304/100, source=cpp-micro, suite=arrow-compute-scalar-temporal-benchmark
  • CastInt64ToInt32Safe (C++) with params=4194304/1, source=cpp-micro, suite=arrow-compute-scalar-cast-benchmark
  • BenchmarkTemporal (C++) with params=<Month, zoned>/4194304/100, source=cpp-micro, suite=arrow-compute-scalar-temporal-benchmark
  • BenchmarkTemporal (C++) with params=<Day, zoned>/4194304/0, source=cpp-micro, suite=arrow-compute-scalar-temporal-benchmark
  • BenchmarkTemporal (C++) with params=<USYear, zoned>/4194304/100, source=cpp-micro, suite=arrow-compute-scalar-temporal-benchmark
  • BenchmarkTemporal (C++) with params=<ISOYear, zoned>/4194304/100, source=cpp-micro, suite=arrow-compute-scalar-temporal-benchmark
  • BitmapReaderSumWithOffset (C++) with params=2, source=cpp-micro, suite=arrow-bit-block-counter-benchmark
  • TakeStringRandomIndicesNoNulls (C++) with params=4194304/1000, source=cpp-micro, suite=arrow-compute-vector-selection-benchmark
  • BenchmarkTemporal (C++) with params=<ISOWeek, zoned>/4194304/100, source=cpp-micro, suite=arrow-compute-scalar-temporal-benchmark