After merging your PR, Conbench analyzed the 4 benchmarking runs that have been run so far on merge-commit 06d4495.

Benchmarks with performance regressions

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

All benchmark runs analyzed:

• Commit Run on ec2-m5-4xlarge-us-east-2 at 2024-04-11 00:20:47Z
• Commit Run on ec2-t3-xlarge-us-east-2 at 2024-04-11 00:29:06Z
• Commit Run on arm64-t4g-linux-compute at 2024-04-11 01:00:36Z
• Commit Run on arm64-m6g-linux-compute at 2024-04-11 01:47:16Z

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-linux-compute at 2024-04-11 01:00:36Z

  • memory_latency (C++) with params=4096/repeats:1, source=cpp-micro, suite=arrow-machine-benchmark
  • ShortVectorInsert (C++) with params=<STD_VECTOR(std::shared_ptr)>, source=cpp-micro, suite=arrow-small-vector-benchmark
  • BM_ReadInt64Column (C++) with params=Repetition::REPEATED/65536/1024, source=cpp-micro, suite=parquet-column-io-benchmark

• Commit Run on arm64-m6g-linux-compute at 2024-04-11 01:47:16Z

  • CopyEmptyVector (C++) with params=<STATIC_VECTOR(std::string)>, source=cpp-micro, suite=arrow-small-vector-benchmark
  • ConstructFromEmptyStdVector (C++) with params=<STD_VECTOR(std::string)>, source=cpp-micro, suite=arrow-small-vector-benchmark
  • memory_latency (C++) with params=2097152/repeats:1, source=cpp-micro, suite=arrow-machine-benchmark
  • LongVectorPushBack (C++) with params=<STD_VECTOR(int)>, source=cpp-micro, suite=arrow-small-vector-benchmark
  • CopyEmptyVector (C++) with params=<STATIC_VECTOR(std::shared_ptr)>, source=cpp-micro, suite=arrow-small-vector-benchmark
  • ShortVectorInsertAtEnd (C++) with params=<STATIC_VECTOR(std::string)>, source=cpp-micro, suite=arrow-small-vector-benchmark
  • LongVectorPushBack (C++) with params=<STD_VECTOR(std::shared_ptr)>, source=cpp-micro, suite=arrow-small-vector-benchmark
  • memory_latency (C++) with params=131072/repeats:1, source=cpp-micro, suite=arrow-machine-benchmark
  • TouchArea (C++) with params=size:65536/real_time/threads:16, source=cpp-micro, suite=arrow-memory-pool-benchmark