conbench-apache-arrow[bot] commented on PR #38784:
URL: https://github.com/apache/arrow/pull/38784#issuecomment-1824941921

   Thanks for your patience. Conbench analyzed the 6 benchmarking runs that 
have been run so far on PR commit 0333b417407a9c6fa3d70d0e08265b49eca1b1cf.
   
   There were 10 benchmark results indicating a performance regression:
   
   - Pull Request Run on `ursa-i9-9960x` at [2023-11-23 
19:03:16Z](https://conbench.ursa.dev/compare/runs/f12445ad2fb84f32a924a483ab75e0db...a4bdbcdd77654137bd734bf9310f6f26/)
     - [`csv-read` (Python) with compression=uncompressed, 
dataset=nyctaxi_2010-01, output_format=arrow_table, 
streaming=file](https://conbench.ursa.dev/compare/benchmarks/0655f49672fa7eff8000b422a207bad4...0655fa1f474e738c80001353d4e9e726)
     - [`tpch` (R) with engine=arrow, format=native, language=R, 
memory_map=False, query_id=TPCH-04, 
scale_factor=1](https://conbench.ursa.dev/compare/benchmarks/0655f60fe0b870688000aff88fd5a5bb...0655fb9c4464755780005edf0a9a17cb)
   - and 8 more (see the report linked below)
   
   The [full Conbench report](https://github.com/apache/arrow/runs/18980214165) 
has more details.


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