After merging your PR, Conbench analyzed the 6 benchmarking runs that have been run so far on merge-commit 7751444.

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-linux-compute at 2023-10-24 18:03:33Z
• Commit Run on ec2-t3-xlarge-us-east-2 at 2023-10-24 16:47:13Z
• Commit Run on ursa-i9-9960x at 2023-10-24 19:24:44Z
• Commit Run on ec2-m5-4xlarge-us-east-2 at 2023-10-24 17:14:44Z
• Commit Run on arm64-m6g-linux-compute at 2023-10-25 00:30:20Z
• Commit Run on ursa-thinkcentre-m75q at 2023-10-25 15:34:26Z

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 ursa-thinkcentre-m75q at 2023-10-25 15:34:26Z
  • BM_ByteStreamSplitDecode_Double_Scalar (C++) with params=65536, source=cpp-micro, suite=parquet-encoding-benchmark
  • BM_ByteStreamSplitEncode_Double_Scalar (C++) with params=32768, source=cpp-micro, suite=parquet-encoding-benchmark
  • BM_ByteStreamSplitEncode_Double_Scalar (C++) with params=4096, source=cpp-micro, suite=parquet-encoding-benchmark
  • BenchmarkBitmapVisitUInt8And (C++) with params=131072/2, source=cpp-micro, suite=arrow-bit-util-benchmark
  • BM_ByteStreamSplitEncode_Double_Scalar (C++) with params=65536, source=cpp-micro, suite=parquet-encoding-benchmark
  • BM_ByteStreamSplitEncode_Double_Scalar (C++) with params=1024, source=cpp-micro, suite=parquet-encoding-benchmark