After merging your PR, Conbench analyzed the 4 benchmarking runs that have been run so far on merge-commit 27cca0f.

Benchmarks with performance regressions

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

All benchmark runs analyzed:

• Commit Run on amd64-c6a-4xlarge-linux at 2025-07-10 02:21:53Z
• Commit Run on arm64-t4g-2xlarge-linux at 2025-07-10 04:48:23Z
• Commit Run on amd64-m5-4xlarge-linux at 2025-07-10 02:46:50Z
• Commit Run on test-mac-arm at 2025-07-10 06:41:11Z

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 2025-07-10 02:21:53Z

  • BenchmarkTemporalBinary (C++) with params=<SecondsBetween, zoned>/524288/100, source=cpp-micro, suite=arrow-compute-scalar-temporal-benchmark
  • BenchmarkTemporalBinary (C++) with params=<WeeksBetween, zoned>/524288/0, source=cpp-micro, suite=arrow-compute-scalar-temporal-benchmark
  • ListSliceStringListWithStop (C++) with params=32768/1, source=cpp-micro, suite=arrow-compute-scalar-list-benchmark
  • BenchmarkTemporalRounding (C++) with params=<RoundTemporal, zoned, round_1_month>/524288/0, source=cpp-micro, suite=arrow-compute-scalar-temporal-benchmark
  • BenchmarkTemporalRounding (C++) with params=<RoundTemporal, zoned, round_1_week>/524288/100, source=cpp-micro, suite=arrow-compute-scalar-temporal-benchmark
  • BenchmarkTemporalRounding (C++) with params=<RoundTemporal, zoned, round_1_week>/524288/0, source=cpp-micro, suite=arrow-compute-scalar-temporal-benchmark
  • BM_ReadColumn (C++) with params=<false,DoubleType>/-1/20, source=cpp-micro, suite=parquet-arrow-reader-writer-benchmark
  • BenchmarkTemporalRounding (C++) with params=<RoundTemporal, zoned, round_1_month>/524288/100, source=cpp-micro, suite=arrow-compute-scalar-temporal-benchmark
  • BenchmarkTemporalBinary (C++) with params=<HoursBetween, zoned>/524288/100, source=cpp-micro, suite=arrow-compute-scalar-temporal-benchmark
  • BenchmarkTemporalRounding (C++) with params=<RoundTemporal, zoned, round_10_week>/524288/100, source=cpp-micro, suite=arrow-compute-scalar-temporal-benchmark
  • BenchmarkTemporalRounding (C++) with params=<RoundTemporal, zoned, round_10_week>/524288/0, source=cpp-micro, suite=arrow-compute-scalar-temporal-benchmark
  • BenchmarkTemporalBinary (C++) with params=<MinutesBetween, zoned>/524288/100, source=cpp-micro, suite=arrow-compute-scalar-temporal-benchmark
  • BenchmarkTemporalBinary (C++) with params=<DaysBetween, zoned>/524288/100, source=cpp-micro, suite=arrow-compute-scalar-temporal-benchmark
  • BenchmarkTemporalBinary (C++) with params=<NanosecondsBetween, zoned>/524288/100, source=cpp-micro, suite=arrow-compute-scalar-temporal-benchmark
  • ArraySortIndicesBool (C++) with params=1048576/100, source=cpp-micro, suite=arrow-compute-vector-sort-benchmark
  • BM_ReadColumn (C++) with params=<false,DoubleType>/-1/0, source=cpp-micro, suite=parquet-arrow-reader-writer-benchmark
  • ShortVectorPushBack (C++) with params=<SMALL_VECTOR(int)>, source=cpp-micro, suite=arrow-small-vector-benchmark

• Commit Run on arm64-t4g-2xlarge-linux at 2025-07-10 04:48:23Z

  • BM_DecodeArrowBooleanRle (C++) with params=DecodeArrow/32768, source=cpp-micro, suite=parquet-encoding-benchmark
  • ConstructFromEmptyStdVector (C++) with params=<SMALL_VECTOR(std::shared_ptr)>, source=cpp-micro, suite=arrow-small-vector-benchmark
  • LongVectorInsertAtEnd (C++) with params=<STD_VECTOR(int)>, source=cpp-micro, suite=arrow-small-vector-benchmark
  • MoveEmptyVector (C++) with params=<STATIC_VECTOR(int)>, source=cpp-micro, suite=arrow-small-vector-benchmark
  • LongVectorInsertAtEnd (C++) with params=<SMALL_VECTOR(int)>, source=cpp-micro, suite=arrow-small-vector-benchmark
  • CopyShortVector (C++) with params=<STATIC_VECTOR(std::string)>, source=cpp-micro, suite=arrow-small-vector-benchmark
  • ConstructFromShortStdVector (C++) with params=<SMALL_VECTOR(int)>, source=cpp-micro, suite=arrow-small-vector-benchmark
  • MoveShortVector (C++) with params=<STD_VECTOR(std::string)>, source=cpp-micro, suite=arrow-small-vector-benchmark
  • BM_DecodeArrowBooleanRle (C++) with params=DecodeArrow/65536, source=cpp-micro, suite=parquet-encoding-benchmark
  • CopyShortVector (C++) with params=<STD_VECTOR(int)>, source=cpp-micro, suite=arrow-small-vector-benchmark
  • ConstructFromEmptyStdVector (C++) with params=<STD_VECTOR(std::shared_ptr)>, source=cpp-micro, suite=arrow-small-vector-benchmark
  • ConstructFromShortStdVector (C++) with params=<STD_VECTOR(std::string)>, source=cpp-micro, suite=arrow-small-vector-benchmark
  • ShortVectorPushBack (C++) with params=<STATIC_VECTOR(std::string)>, source=cpp-micro, suite=arrow-small-vector-benchmark