After merging your PR, Conbench analyzed the 4 benchmarking runs that have been run so far on merge-commit 7f64fff.

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-t3-xlarge-us-east-2 at 2024-04-11 04:04:32Z
• Commit Run on ec2-m5-4xlarge-us-east-2 at 2024-04-11 03:07:02Z
• Commit Run on arm64-t4g-linux-compute at 2024-04-11 03:44:56Z
• Commit Run on arm64-m6g-linux-compute at 2024-04-11 05:36:22Z

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 03:44:56Z

  • InlinedTrieLookupNotFound (C++) with source=cpp-micro, suite=arrow-trie-benchmark
  • memory_latency (C++) with params=65536/repeats:1, source=cpp-micro, suite=arrow-machine-benchmark
  • memory_latency (C++) with params=32768/repeats:1, source=cpp-micro, suite=arrow-machine-benchmark
  • memory_latency (C++) with params=4096/repeats:1, source=cpp-micro, suite=arrow-machine-benchmark
  • memory_latency (C++) with params=16384/repeats:1, source=cpp-micro, suite=arrow-machine-benchmark
  • memory_latency (C++) with params=2048/repeats:1, source=cpp-micro, suite=arrow-machine-benchmark
  • FloatConversion (C++) with source=cpp-micro, suite=arrow-csv-converter-benchmark
  • memory_latency (C++) with params=8192/repeats:1, source=cpp-micro, suite=arrow-machine-benchmark
  • InlinedTrieLookupFound (C++) with source=cpp-micro, suite=arrow-trie-benchmark
  • CheckIndexBoundsUInt32 (C++) with params=1048576/1000, source=cpp-micro, suite=arrow-int-util-benchmark

• Commit Run on arm64-m6g-linux-compute at 2024-04-11 05:36:22Z

  • BitmapReaderSum (C++) with params=65536, source=cpp-micro, suite=arrow-bit-block-counter-benchmark