mapleFU commented on PR #39397:
URL: https://github.com/apache/arrow/pull/39397#issuecomment-1879597172

   @emkornfield I've create a draft pr: 
https://github.com/apache/arrow/pull/39486
   
   In my M1 MacOS with Release (-O2)
   
   Origin:
   
   ```
   
-------------------------------------------------------------------------------------------------------------
   Benchmark                                                   Time             
CPU   Iterations UserCounters...
   
-------------------------------------------------------------------------------------------------------------
   ColumnReaderReadLevels/Repetition:1/BatchSize:1000    5309956 ns      
5145464 ns          138 bytes_per_second=505.577M/s
   ColumnReaderReadLevels/Repetition:2/BatchSize:1000    6481672 ns      
6169167 ns          114 bytes_per_second=449.652M/s
   ```
   
   New:
   
   ```
   
-------------------------------------------------------------------------------------------------------------
   Benchmark                                                   Time             
CPU   Iterations UserCounters...
   
-------------------------------------------------------------------------------------------------------------
   ColumnReaderReadLevels/Repetition:1/BatchSize:1000     712139 ns       
686560 ns         1087 bytes_per_second=3.70027G/s
   ColumnReaderReadLevels/Repetition:2/BatchSize:1000    1705093 ns      
1651455 ns          440 bytes_per_second=1.64035G/s
   ```
   


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