After merging your PR, Conbench analyzed the 4 benchmarking runs that have been run so far on merge-commit 7a24729.

Benchmarks with performance regressions

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

All benchmark runs analyzed:

• Commit Run on arm64-t4g-2xlarge-linux at 2024-09-05 13:59:20Z
• Commit Run on test-mac-arm at 2024-09-05 17:14:55Z
• Commit Run on amd64-c6a-4xlarge-linux at 2024-09-05 13:30:33Z
• Commit Run on amd64-m5-4xlarge-linux at 2024-09-05 13:42:50Z

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 2024-09-05 17:14:55Z

  • TimestampParsingISO8601 (C++) with params=TimeUnit::SECOND, source=cpp-micro, suite=arrow-value-parsing-benchmark
  • BM_RleDecoding (C++) with params=1024/1, source=cpp-micro, suite=parquet-column-io-benchmark

• Commit Run on amd64-c6a-4xlarge-linux at 2024-09-05 13:30:33Z

  • BM_PlainEncodingBoolean (C++) with params=1024, source=cpp-micro, suite=parquet-encoding-benchmark
  • ShortVectorInsertAtEnd (C++) with params=<STATIC_VECTOR(std::string)>, source=cpp-micro, suite=arrow-small-vector-benchmark
  • BM_PlainEncodingBoolean (C++) with params=4096, source=cpp-micro, suite=parquet-encoding-benchmark