After merging your PR, Conbench analyzed the 4 benchmarking runs that have been run so far on merge-commit 1dc9142.

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 2025-07-11 07:53:38Z
• Commit Run on arm64-t4g-2xlarge-linux at 2025-07-11 12:41:52Z
• Commit Run on amd64-m5-4xlarge-linux at 2025-07-11 10:30:13Z
• Commit Run on test-mac-arm at 2025-07-11 20:42:32Z

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 arm64-t4g-2xlarge-linux at 2025-07-11 12:41:52Z
  • BenchmarkTemporalBinary (C++) with params=<MonthDayNanoBetween, date64_type>/1048576/0, source=cpp-micro, suite=arrow-compute-scalar-temporal-benchmark
  • ChunkedArrayRankInt64Narrow (C++) with params=65536/10000/tiebreaker:2, source=cpp-micro, suite=arrow-compute-vector-sort-benchmark
  • ArrayRankInt64Wide (C++) with params=65536/100/tiebreaker:0, source=cpp-micro, suite=arrow-compute-vector-sort-benchmark
  • ChunkedArrayRankInt64Wide (C++) with params=65536/0/tiebreaker:0, source=cpp-micro, suite=arrow-compute-vector-sort-benchmark
  • BenchmarkTemporalBinary (C++) with params=<QuartersBetween, date32_type>/1048576/0, source=cpp-micro, suite=arrow-compute-scalar-temporal-benchmark
  • ChunkedArrayRankInt64Narrow (C++) with params=65536/0/tiebreaker:0, source=cpp-micro, suite=arrow-compute-vector-sort-benchmark
  • BenchmarkTemporalBinary (C++) with params=<WeeksBetween, non_zoned>/1048576/100, source=cpp-micro, suite=arrow-compute-scalar-temporal-benchmark
  • ArrayRankInt64Wide (C++) with params=65536/100/tiebreaker:2, source=cpp-micro, suite=arrow-compute-vector-sort-benchmark
  • BenchmarkTemporal (C++) with params=<Day, non_zoned>/1048576/100, source=cpp-micro, suite=arrow-compute-scalar-temporal-benchmark
  • ChunkedArrayRankInt64Narrow (C++) with params=65536/100/tiebreaker:2, source=cpp-micro, suite=arrow-compute-vector-sort-benchmark
  • ErrorSchemeException (C++) with source=cpp-micro, suite=arrow-type-benchmark
  • ArrayRankInt64Wide (C++) with params=65536/0/tiebreaker:0, source=cpp-micro, suite=arrow-compute-vector-sort-benchmark
  • BenchmarkTemporalBinary (C++) with params=<MonthsBetween, date32_type>/1048576/0, source=cpp-micro, suite=arrow-compute-scalar-temporal-benchmark
  • ChunkedArrayRankInt64Wide (C++) with params=65536/10/tiebreaker:0, source=cpp-micro, suite=arrow-compute-vector-sort-benchmark
  • ChunkedArrayRankInt64Narrow (C++) with params=65536/10000/tiebreaker:0, source=cpp-micro, suite=arrow-compute-vector-sort-benchmark