After merging your PR, Conbench analyzed the 7 benchmarking runs that have been run so far on merge-commit 0eefb07.

Benchmarks with performance regressions

There were 8 possible performance regressions, according to the lookback z-score method.

Benchmarks with regressions:

• Commit Run on ursa-i9-9960x at 2024-03-20 14:37:21Z
  • file-read (R) with compression=uncompressed, dataset=fanniemae_2016Q4, file_type=feather, language=R, output_type=dataframe
  • tpch (R) with engine=arrow, format=native, language=R, memory_map=False, query_id=TPCH-20, scale_factor=1
  • tpch (R) with engine=arrow, format=native, language=R, memory_map=False, query_id=TPCH-16, scale_factor=1
  • file-read (R) with compression=lz4, dataset=fanniemae_2016Q4, file_type=feather, language=R, output_type=table
  • tpch (R) with engine=arrow, format=native, language=R, memory_map=False, query_id=TPCH-14, scale_factor=1
  • file-read (R) with compression=lz4, dataset=fanniemae_2016Q4, file_type=feather, language=R, output_type=dataframe
  • file-read (R) with compression=uncompressed, dataset=fanniemae_2016Q4, file_type=feather, language=R, output_type=table
  • tpch (R) with engine=arrow, format=native, language=R, memory_map=False, query_id=TPCH-15, scale_factor=1

All benchmark runs analyzed:

• Commit Run on ursa-thinkcentre-m75q at 2024-03-20 18:33:35Z
• Commit Run on test-mac-arm at 2024-03-20 17:28:16Z
• Commit Run on ursa-i9-9960x at 2024-03-20 14:37:21Z
• Commit Run on ec2-t3-xlarge-us-east-2 at 2024-03-20 13:37:41Z
• Commit Run on ec2-m5-4xlarge-us-east-2 at 2024-03-20 16:12:07Z
• Commit Run on arm64-t4g-linux-compute at 2024-03-20 18:22:13Z
• Commit Run on arm64-m6g-linux-compute at 2024-03-20 18:46:02Z

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 2024-03-20 18:33:35Z
  • TouchArea (C++) with params=size:4096/real_time, source=cpp-micro, suite=arrow-memory-pool-benchmark
  • BM_ComputeHash (C++) with params=, source=cpp-micro, suite=parquet-bloom-filter-benchmark
  • IntegerParsing (C++) with params=, source=cpp-micro, suite=arrow-value-parsing-benchmark