etseidl commented on PR #7055:
URL: https://github.com/apache/arrow-rs/pull/7055#issuecomment-2795329215

   Benchmarks for integer conversion.
   
   <details>
   
   <summary>int8 details</summary>
   
   ```
   arrow_array_reader/Int8Array/binary packed skip, mandatory, no NULLs         
     1.13     47.2±0.59µs        ? ?/sec    1.00     41.6±0.60µs        ? ?/sec
   arrow_array_reader/Int8Array/binary packed skip, optional, half NULLs        
     1.44     78.1±1.06µs        ? ?/sec    1.00     54.1±0.72µs        ? ?/sec
   arrow_array_reader/Int8Array/binary packed skip, optional, no NULLs          
     1.11     48.5±0.64µs        ? ?/sec    1.00     43.8±0.61µs        ? ?/sec
   arrow_array_reader/Int8Array/binary packed, mandatory, no NULLs              
     1.18     66.2±0.75µs        ? ?/sec    1.00     56.3±0.84µs        ? ?/sec
   arrow_array_reader/Int8Array/binary packed, optional, half NULLs             
     1.51    138.1±1.33µs        ? ?/sec    1.00     91.5±1.38µs        ? ?/sec
   arrow_array_reader/Int8Array/binary packed, optional, no NULLs               
     1.15     69.7±0.87µs        ? ?/sec    1.00     60.7±1.14µs        ? ?/sec
   arrow_array_reader/Int8Array/byte_stream_split encoded, mandatory, no NULLs  
     1.42     29.8±0.42µs        ? ?/sec    1.00     20.9±0.24µs        ? ?/sec
   arrow_array_reader/Int8Array/byte_stream_split encoded, optional, half NULLs 
     1.61    118.0±1.28µs        ? ?/sec    1.00     73.4±1.38µs        ? ?/sec
   arrow_array_reader/Int8Array/byte_stream_split encoded, optional, no NULLs   
     1.35     32.6±0.38µs        ? ?/sec    1.00     24.1±0.29µs        ? ?/sec
   arrow_array_reader/Int8Array/dictionary encoded, mandatory, no NULLs         
     1.19     59.1±0.72µs        ? ?/sec    1.00     49.8±0.48µs        ? ?/sec
   arrow_array_reader/Int8Array/dictionary encoded, optional, half NULLs        
     1.50    135.4±1.44µs        ? ?/sec    1.00     90.4±1.41µs        ? ?/sec
   arrow_array_reader/Int8Array/dictionary encoded, optional, no NULLs          
     1.17     62.4±0.62µs        ? ?/sec    1.00     53.2±0.92µs        ? ?/sec
   arrow_array_reader/Int8Array/plain encoded, mandatory, no NULLs              
     1.49     28.6±0.35µs        ? ?/sec    1.00     19.2±0.29µs        ? ?/sec
   arrow_array_reader/Int8Array/plain encoded, optional, half NULLs             
     1.65    117.7±1.18µs        ? ?/sec    1.00     71.3±0.92µs        ? ?/sec
   arrow_array_reader/Int8Array/plain encoded, optional, no NULLs               
     1.43     32.3±0.86µs        ? ?/sec    1.00     22.6±0.35µs        ? ?/sec
   arrow_array_reader/UInt8Array/binary packed skip, mandatory, no NULLs        
     1.10     49.4±0.55µs        ? ?/sec    1.00     45.0±0.85µs        ? ?/sec
   arrow_array_reader/UInt8Array/binary packed skip, optional, half NULLs       
     1.39     78.2±0.80µs        ? ?/sec    1.00     56.1±0.61µs        ? ?/sec
   arrow_array_reader/UInt8Array/binary packed skip, optional, no NULLs         
     1.06     51.6±0.66µs        ? ?/sec    1.00     48.6±6.94µs        ? ?/sec
   arrow_array_reader/UInt8Array/binary packed, mandatory, no NULLs             
     1.15     70.2±0.81µs        ? ?/sec    1.00     61.2±0.85µs        ? ?/sec
   arrow_array_reader/UInt8Array/binary packed, optional, half NULLs            
     1.48    138.2±2.01µs        ? ?/sec    1.00     93.1±1.14µs        ? ?/sec
   arrow_array_reader/UInt8Array/binary packed, optional, no NULLs              
     1.14     73.5±1.20µs        ? ?/sec    1.00     64.7±1.06µs        ? ?/sec
   arrow_array_reader/UInt8Array/byte_stream_split encoded, mandatory, no NULLs 
     1.52     30.7±0.36µs        ? ?/sec    1.00     20.2±0.25µs        ? ?/sec
   arrow_array_reader/UInt8Array/byte_stream_split encoded, optional, half 
NULLs     1.61    116.4±1.57µs        ? ?/sec    1.00     72.3±1.13µs        ? 
?/sec
   arrow_array_reader/UInt8Array/byte_stream_split encoded, optional, no NULLs  
     1.35     33.6±0.80µs        ? ?/sec    1.00     24.8±0.35µs        ? ?/sec
   arrow_array_reader/UInt8Array/dictionary encoded, mandatory, no NULLs        
     1.14     59.1±0.53µs        ? ?/sec    1.00     52.0±7.15µs        ? ?/sec
   arrow_array_reader/UInt8Array/dictionary encoded, optional, half NULLs       
     1.49    134.2±2.16µs        ? ?/sec    1.00     89.9±1.02µs        ? ?/sec
   arrow_array_reader/UInt8Array/dictionary encoded, optional, no NULLs         
     1.17     62.4±0.79µs        ? ?/sec    1.00     53.2±0.78µs        ? ?/sec
   arrow_array_reader/UInt8Array/plain encoded, mandatory, no NULLs             
     1.51     28.7±0.48µs        ? ?/sec    1.00     19.0±0.24µs        ? ?/sec
   arrow_array_reader/UInt8Array/plain encoded, optional, half NULLs            
     1.66    117.0±2.70µs        ? ?/sec    1.00     70.5±0.78µs        ? ?/sec
   arrow_array_reader/UInt8Array/plain encoded, optional, no NULLs              
     1.43     31.9±0.58µs        ? ?/sec    1.00     22.3±0.35µs        ? ?/sec
   ```
   
   </details>
   
   <details>
   
   <summary>int16 details</summary>
   
   ```
   arrow_array_reader/Int16Array/binary packed skip, mandatory, no NULLs        
     1.14     47.2±0.54µs        ? ?/sec    1.00     41.5±0.78µs        ? ?/sec
   arrow_array_reader/Int16Array/binary packed skip, optional, half NULLs       
     1.44     77.6±1.00µs        ? ?/sec    1.00     54.0±0.77µs        ? ?/sec
   arrow_array_reader/Int16Array/binary packed skip, optional, no NULLs         
     1.13     49.0±0.50µs        ? ?/sec    1.00     43.3±0.59µs        ? ?/sec
   arrow_array_reader/Int16Array/binary packed, mandatory, no NULLs             
     1.20     67.5±0.79µs        ? ?/sec    1.00     56.0±0.59µs        ? ?/sec
   arrow_array_reader/Int16Array/binary packed, optional, half NULLs            
     1.51    136.1±2.29µs        ? ?/sec    1.00     90.1±1.33µs        ? ?/sec
   arrow_array_reader/Int16Array/binary packed, optional, no NULLs              
     1.17     70.7±0.92µs        ? ?/sec    1.00     60.6±0.92µs        ? ?/sec
   arrow_array_reader/Int16Array/byte_stream_split encoded, mandatory, no NULLs 
     1.53     30.7±0.54µs        ? ?/sec    1.00     20.1±0.24µs        ? ?/sec
   arrow_array_reader/Int16Array/byte_stream_split encoded, optional, half 
NULLs     1.65    116.6±2.29µs        ? ?/sec    1.00     70.9±0.88µs        ? 
?/sec
   arrow_array_reader/Int16Array/byte_stream_split encoded, optional, no NULLs  
     1.44     33.5±0.41µs        ? ?/sec    1.00     23.2±0.25µs        ? ?/sec
   arrow_array_reader/Int16Array/dictionary encoded, mandatory, no NULLs        
     1.25     61.0±1.06µs        ? ?/sec    1.00     48.7±0.93µs        ? ?/sec
   arrow_array_reader/Int16Array/dictionary encoded, optional, half NULLs       
     1.52    134.2±2.09µs        ? ?/sec    1.00     88.5±1.44µs        ? ?/sec
   arrow_array_reader/Int16Array/dictionary encoded, optional, no NULLs         
     1.23     64.3±1.10µs        ? ?/sec    1.00     52.1±0.64µs        ? ?/sec
   arrow_array_reader/Int16Array/plain encoded, mandatory, no NULLs             
     1.62     30.2±0.61µs        ? ?/sec    1.00     18.7±0.23µs        ? ?/sec
   arrow_array_reader/Int16Array/plain encoded, optional, half NULLs            
     1.65    116.7±2.04µs        ? ?/sec    1.00     70.9±1.20µs        ? ?/sec
   arrow_array_reader/Int16Array/plain encoded, optional, no NULLs              
     1.50     32.8±0.42µs        ? ?/sec    1.00     21.9±0.31µs        ? ?/sec
   arrow_array_reader/UInt16Array/binary packed skip, mandatory, no NULLs       
     1.13     51.2±0.57µs        ? ?/sec    1.00     45.3±0.47µs        ? ?/sec
   arrow_array_reader/UInt16Array/binary packed skip, optional, half NULLs      
     1.42     80.1±1.23µs        ? ?/sec    1.00     56.4±0.83µs        ? ?/sec
   arrow_array_reader/UInt16Array/binary packed skip, optional, no NULLs        
     1.13     53.1±0.77µs        ? ?/sec    1.00     47.0±0.54µs        ? ?/sec
   arrow_array_reader/UInt16Array/binary packed, mandatory, no NULLs            
     1.18     72.7±0.75µs        ? ?/sec    1.00     61.7±0.66µs        ? ?/sec
   arrow_array_reader/UInt16Array/binary packed, optional, half NULLs           
     1.49    139.9±2.34µs        ? ?/sec    1.00     94.2±1.57µs        ? ?/sec
   arrow_array_reader/UInt16Array/binary packed, optional, no NULLs             
     1.17     76.6±3.02µs        ? ?/sec    1.00     65.3±0.82µs        ? ?/sec
   arrow_array_reader/UInt16Array/byte_stream_split encoded, mandatory, no 
NULLs     1.58     30.3±0.39µs        ? ?/sec    1.00     19.1±0.39µs        ? 
?/sec
   arrow_array_reader/UInt16Array/byte_stream_split encoded, optional, half 
NULLs    1.64    116.5±1.78µs        ? ?/sec    1.00     71.1±1.25µs        ? 
?/sec
   arrow_array_reader/UInt16Array/byte_stream_split encoded, optional, no NULLs 
     1.55     34.3±0.40µs        ? ?/sec    1.00     22.1±0.28µs        ? ?/sec
   arrow_array_reader/UInt16Array/dictionary encoded, mandatory, no NULLs       
     1.24     60.9±0.62µs        ? ?/sec    1.00     48.9±0.63µs        ? ?/sec
   arrow_array_reader/UInt16Array/dictionary encoded, optional, half NULLs      
     1.52    134.7±1.79µs        ? ?/sec    1.00     88.8±1.25µs        ? ?/sec
   arrow_array_reader/UInt16Array/dictionary encoded, optional, no NULLs        
     1.22     64.2±0.70µs        ? ?/sec    1.00     52.6±0.57µs        ? ?/sec
   arrow_array_reader/UInt16Array/plain encoded, mandatory, no NULLs            
     1.61     29.7±0.46µs        ? ?/sec    1.00     18.5±0.22µs        ? ?/sec
   arrow_array_reader/UInt16Array/plain encoded, optional, half NULLs           
     1.64    116.8±1.86µs        ? ?/sec    1.00     71.1±1.08µs        ? ?/sec
   arrow_array_reader/UInt16Array/plain encoded, optional, no NULLs             
     1.51     32.8±0.42µs        ? ?/sec    1.00     21.7±0.38µs        ? ?/sec
   ```
   
   </details>
   
   <details>
   
   <summary>full details</summary>
   
   ```
   group                                                                        
     55_0                                   cast_int
   -----                                                                        
     ----                                   --------
   arrow_array_reader/Int16Array/binary packed skip, mandatory, no NULLs        
     1.14     47.2±0.54µs        ? ?/sec    1.00     41.5±0.78µs        ? ?/sec
   arrow_array_reader/Int16Array/binary packed skip, optional, half NULLs       
     1.44     77.6±1.00µs        ? ?/sec    1.00     54.0±0.77µs        ? ?/sec
   arrow_array_reader/Int16Array/binary packed skip, optional, no NULLs         
     1.13     49.0±0.50µs        ? ?/sec    1.00     43.3±0.59µs        ? ?/sec
   arrow_array_reader/Int16Array/binary packed, mandatory, no NULLs             
     1.20     67.5±0.79µs        ? ?/sec    1.00     56.0±0.59µs        ? ?/sec
   arrow_array_reader/Int16Array/binary packed, optional, half NULLs            
     1.51    136.1±2.29µs        ? ?/sec    1.00     90.1±1.33µs        ? ?/sec
   arrow_array_reader/Int16Array/binary packed, optional, no NULLs              
     1.17     70.7±0.92µs        ? ?/sec    1.00     60.6±0.92µs        ? ?/sec
   arrow_array_reader/Int16Array/byte_stream_split encoded, mandatory, no NULLs 
     1.53     30.7±0.54µs        ? ?/sec    1.00     20.1±0.24µs        ? ?/sec
   arrow_array_reader/Int16Array/byte_stream_split encoded, optional, half 
NULLs     1.65    116.6±2.29µs        ? ?/sec    1.00     70.9±0.88µs        ? 
?/sec
   arrow_array_reader/Int16Array/byte_stream_split encoded, optional, no NULLs  
     1.44     33.5±0.41µs        ? ?/sec    1.00     23.2±0.25µs        ? ?/sec
   arrow_array_reader/Int16Array/dictionary encoded, mandatory, no NULLs        
     1.25     61.0±1.06µs        ? ?/sec    1.00     48.7±0.93µs        ? ?/sec
   arrow_array_reader/Int16Array/dictionary encoded, optional, half NULLs       
     1.52    134.2±2.09µs        ? ?/sec    1.00     88.5±1.44µs        ? ?/sec
   arrow_array_reader/Int16Array/dictionary encoded, optional, no NULLs         
     1.23     64.3±1.10µs        ? ?/sec    1.00     52.1±0.64µs        ? ?/sec
   arrow_array_reader/Int16Array/plain encoded, mandatory, no NULLs             
     1.62     30.2±0.61µs        ? ?/sec    1.00     18.7±0.23µs        ? ?/sec
   arrow_array_reader/Int16Array/plain encoded, optional, half NULLs            
     1.65    116.7±2.04µs        ? ?/sec    1.00     70.9±1.20µs        ? ?/sec
   arrow_array_reader/Int16Array/plain encoded, optional, no NULLs              
     1.50     32.8±0.42µs        ? ?/sec    1.00     21.9±0.31µs        ? ?/sec
   arrow_array_reader/Int32Array/binary packed skip, mandatory, no NULLs        
     1.00     40.9±0.72µs        ? ?/sec    1.00     40.9±0.61µs        ? ?/sec
   arrow_array_reader/Int32Array/binary packed skip, optional, half NULLs       
     1.01     53.1±0.71µs        ? ?/sec    1.00     52.7±0.66µs        ? ?/sec
   arrow_array_reader/Int32Array/binary packed skip, optional, no NULLs         
     1.00     42.9±0.54µs        ? ?/sec    1.00     42.8±0.53µs        ? ?/sec
   arrow_array_reader/Int32Array/binary packed, mandatory, no NULLs             
     1.00     53.1±1.13µs        ? ?/sec    1.00     53.1±0.60µs        ? ?/sec
   arrow_array_reader/Int32Array/binary packed, optional, half NULLs            
     1.00     86.7±1.05µs        ? ?/sec    1.00     87.1±0.91µs        ? ?/sec
   arrow_array_reader/Int32Array/binary packed, optional, no NULLs              
     1.00     56.9±0.69µs        ? ?/sec    1.00     57.0±0.91µs        ? ?/sec
   arrow_array_reader/Int32Array/byte_stream_split encoded, mandatory, no NULLs 
     1.00     13.7±0.18µs        ? ?/sec    1.01     13.8±0.21µs        ? ?/sec
   arrow_array_reader/Int32Array/byte_stream_split encoded, optional, half 
NULLs     1.03     66.4±0.87µs        ? ?/sec    1.00     64.6±0.77µs        ? 
?/sec
   arrow_array_reader/Int32Array/byte_stream_split encoded, optional, no NULLs  
     1.00     17.1±0.19µs        ? ?/sec    1.00     17.0±0.28µs        ? ?/sec
   arrow_array_reader/Int32Array/dictionary encoded, mandatory, no NULLs        
     1.01     43.1±0.93µs        ? ?/sec    1.00     42.8±0.43µs        ? ?/sec
   arrow_array_reader/Int32Array/dictionary encoded, optional, half NULLs       
     1.00     83.2±1.10µs        ? ?/sec    1.00     83.5±1.05µs        ? ?/sec
   arrow_array_reader/Int32Array/dictionary encoded, optional, no NULLs         
     1.00     46.9±0.50µs        ? ?/sec    1.00     46.9±0.70µs        ? ?/sec
   arrow_array_reader/Int32Array/plain encoded, mandatory, no NULLs             
     1.00      9.6±0.11µs        ? ?/sec    1.05     10.1±0.14µs        ? ?/sec
   arrow_array_reader/Int32Array/plain encoded, optional, half NULLs            
     1.02     64.0±0.92µs        ? ?/sec    1.00     63.0±0.62µs        ? ?/sec
   arrow_array_reader/Int32Array/plain encoded, optional, no NULLs              
     1.00     13.5±0.19µs        ? ?/sec    1.01     13.7±0.18µs        ? ?/sec
   arrow_array_reader/Int64Array/binary packed skip, mandatory, no NULLs        
     1.00     44.7±0.56µs        ? ?/sec    1.01     45.1±0.71µs        ? ?/sec
   arrow_array_reader/Int64Array/binary packed skip, optional, half NULLs       
     1.01     55.4±0.61µs        ? ?/sec    1.00     54.5±0.59µs        ? ?/sec
   arrow_array_reader/Int64Array/binary packed skip, optional, no NULLs         
     1.01     46.7±0.87µs        ? ?/sec    1.00     46.1±0.71µs        ? ?/sec
   arrow_array_reader/Int64Array/binary packed, mandatory, no NULLs             
     1.00     61.0±0.61µs        ? ?/sec    1.02     62.3±0.85µs        ? ?/sec
   arrow_array_reader/Int64Array/binary packed, optional, half NULLs            
     1.00     91.1±0.98µs        ? ?/sec    1.06     96.6±1.43µs        ? ?/sec
   arrow_array_reader/Int64Array/binary packed, optional, no NULLs              
     1.00     65.1±0.99µs        ? ?/sec    1.01     65.6±0.93µs        ? ?/sec
   arrow_array_reader/Int64Array/byte_stream_split encoded, mandatory, no NULLs 
     1.00     64.2±0.65µs        ? ?/sec    1.00     64.0±0.72µs        ? ?/sec
   arrow_array_reader/Int64Array/byte_stream_split encoded, optional, half 
NULLs     1.00     95.3±1.26µs        ? ?/sec    1.00     95.3±1.16µs        ? 
?/sec
   arrow_array_reader/Int64Array/byte_stream_split encoded, optional, no NULLs  
     1.00     67.3±0.70µs        ? ?/sec    1.00     67.5±0.77µs        ? ?/sec
   arrow_array_reader/Int64Array/dictionary encoded, mandatory, no NULLs        
     1.01     48.4±0.59µs        ? ?/sec    1.00     47.9±0.52µs        ? ?/sec
   arrow_array_reader/Int64Array/dictionary encoded, optional, half NULLs       
     1.00     85.6±0.95µs        ? ?/sec    1.00     85.2±1.05µs        ? ?/sec
   arrow_array_reader/Int64Array/dictionary encoded, optional, no NULLs         
     1.00     51.7±0.83µs        ? ?/sec    1.00     51.6±0.94µs        ? ?/sec
   arrow_array_reader/Int64Array/plain encoded, mandatory, no NULLs             
     1.01     25.9±0.61µs        ? ?/sec    1.00     25.6±0.46µs        ? ?/sec
   arrow_array_reader/Int64Array/plain encoded, optional, half NULLs            
     1.01     74.4±0.94µs        ? ?/sec    1.00     73.4±0.91µs        ? ?/sec
   arrow_array_reader/Int64Array/plain encoded, optional, no NULLs              
     1.00     29.2±0.66µs        ? ?/sec    1.00     29.2±0.43µs        ? ?/sec
   arrow_array_reader/Int8Array/binary packed skip, mandatory, no NULLs         
     1.13     47.2±0.59µs        ? ?/sec    1.00     41.6±0.60µs        ? ?/sec
   arrow_array_reader/Int8Array/binary packed skip, optional, half NULLs        
     1.44     78.1±1.06µs        ? ?/sec    1.00     54.1±0.72µs        ? ?/sec
   arrow_array_reader/Int8Array/binary packed skip, optional, no NULLs          
     1.11     48.5±0.64µs        ? ?/sec    1.00     43.8±0.61µs        ? ?/sec
   arrow_array_reader/Int8Array/binary packed, mandatory, no NULLs              
     1.18     66.2±0.75µs        ? ?/sec    1.00     56.3±0.84µs        ? ?/sec
   arrow_array_reader/Int8Array/binary packed, optional, half NULLs             
     1.51    138.1±1.33µs        ? ?/sec    1.00     91.5±1.38µs        ? ?/sec
   arrow_array_reader/Int8Array/binary packed, optional, no NULLs               
     1.15     69.7±0.87µs        ? ?/sec    1.00     60.7±1.14µs        ? ?/sec
   arrow_array_reader/Int8Array/byte_stream_split encoded, mandatory, no NULLs  
     1.42     29.8±0.42µs        ? ?/sec    1.00     20.9±0.24µs        ? ?/sec
   arrow_array_reader/Int8Array/byte_stream_split encoded, optional, half NULLs 
     1.61    118.0±1.28µs        ? ?/sec    1.00     73.4±1.38µs        ? ?/sec
   arrow_array_reader/Int8Array/byte_stream_split encoded, optional, no NULLs   
     1.35     32.6±0.38µs        ? ?/sec    1.00     24.1±0.29µs        ? ?/sec
   arrow_array_reader/Int8Array/dictionary encoded, mandatory, no NULLs         
     1.19     59.1±0.72µs        ? ?/sec    1.00     49.8±0.48µs        ? ?/sec
   arrow_array_reader/Int8Array/dictionary encoded, optional, half NULLs        
     1.50    135.4±1.44µs        ? ?/sec    1.00     90.4±1.41µs        ? ?/sec
   arrow_array_reader/Int8Array/dictionary encoded, optional, no NULLs          
     1.17     62.4±0.62µs        ? ?/sec    1.00     53.2±0.92µs        ? ?/sec
   arrow_array_reader/Int8Array/plain encoded, mandatory, no NULLs              
     1.49     28.6±0.35µs        ? ?/sec    1.00     19.2±0.29µs        ? ?/sec
   arrow_array_reader/Int8Array/plain encoded, optional, half NULLs             
     1.65    117.7±1.18µs        ? ?/sec    1.00     71.3±0.92µs        ? ?/sec
   arrow_array_reader/Int8Array/plain encoded, optional, no NULLs               
     1.43     32.3±0.86µs        ? ?/sec    1.00     22.6±0.35µs        ? ?/sec
   arrow_array_reader/UInt16Array/binary packed skip, mandatory, no NULLs       
     1.13     51.2±0.57µs        ? ?/sec    1.00     45.3±0.47µs        ? ?/sec
   arrow_array_reader/UInt16Array/binary packed skip, optional, half NULLs      
     1.42     80.1±1.23µs        ? ?/sec    1.00     56.4±0.83µs        ? ?/sec
   arrow_array_reader/UInt16Array/binary packed skip, optional, no NULLs        
     1.13     53.1±0.77µs        ? ?/sec    1.00     47.0±0.54µs        ? ?/sec
   arrow_array_reader/UInt16Array/binary packed, mandatory, no NULLs            
     1.18     72.7±0.75µs        ? ?/sec    1.00     61.7±0.66µs        ? ?/sec
   arrow_array_reader/UInt16Array/binary packed, optional, half NULLs           
     1.49    139.9±2.34µs        ? ?/sec    1.00     94.2±1.57µs        ? ?/sec
   arrow_array_reader/UInt16Array/binary packed, optional, no NULLs             
     1.17     76.6±3.02µs        ? ?/sec    1.00     65.3±0.82µs        ? ?/sec
   arrow_array_reader/UInt16Array/byte_stream_split encoded, mandatory, no 
NULLs     1.58     30.3±0.39µs        ? ?/sec    1.00     19.1±0.39µs        ? 
?/sec
   arrow_array_reader/UInt16Array/byte_stream_split encoded, optional, half 
NULLs    1.64    116.5±1.78µs        ? ?/sec    1.00     71.1±1.25µs        ? 
?/sec
   arrow_array_reader/UInt16Array/byte_stream_split encoded, optional, no NULLs 
     1.55     34.3±0.40µs        ? ?/sec    1.00     22.1±0.28µs        ? ?/sec
   arrow_array_reader/UInt16Array/dictionary encoded, mandatory, no NULLs       
     1.24     60.9±0.62µs        ? ?/sec    1.00     48.9±0.63µs        ? ?/sec
   arrow_array_reader/UInt16Array/dictionary encoded, optional, half NULLs      
     1.52    134.7±1.79µs        ? ?/sec    1.00     88.8±1.25µs        ? ?/sec
   arrow_array_reader/UInt16Array/dictionary encoded, optional, no NULLs        
     1.22     64.2±0.70µs        ? ?/sec    1.00     52.6±0.57µs        ? ?/sec
   arrow_array_reader/UInt16Array/plain encoded, mandatory, no NULLs            
     1.61     29.7±0.46µs        ? ?/sec    1.00     18.5±0.22µs        ? ?/sec
   arrow_array_reader/UInt16Array/plain encoded, optional, half NULLs           
     1.64    116.8±1.86µs        ? ?/sec    1.00     71.1±1.08µs        ? ?/sec
   arrow_array_reader/UInt16Array/plain encoded, optional, no NULLs             
     1.51     32.8±0.42µs        ? ?/sec    1.00     21.7±0.38µs        ? ?/sec
   arrow_array_reader/UInt32Array/binary packed skip, mandatory, no NULLs       
     1.00     40.8±0.58µs        ? ?/sec    1.01     41.1±0.45µs        ? ?/sec
   arrow_array_reader/UInt32Array/binary packed skip, optional, half NULLs      
     1.02     52.7±1.04µs        ? ?/sec    1.00     51.9±0.54µs        ? ?/sec
   arrow_array_reader/UInt32Array/binary packed skip, optional, no NULLs        
     1.01     42.7±0.46µs        ? ?/sec    1.00     42.4±0.59µs        ? ?/sec
   arrow_array_reader/UInt32Array/binary packed, mandatory, no NULLs            
     1.00     53.5±0.76µs        ? ?/sec    1.02     54.4±0.99µs        ? ?/sec
   arrow_array_reader/UInt32Array/binary packed, optional, half NULLs           
     1.00     86.5±1.22µs        ? ?/sec    1.00     86.4±1.51µs        ? ?/sec
   arrow_array_reader/UInt32Array/binary packed, optional, no NULLs             
     1.00     56.7±0.70µs        ? ?/sec    1.00     56.7±0.85µs        ? ?/sec
   arrow_array_reader/UInt32Array/byte_stream_split encoded, mandatory, no 
NULLs     1.00     12.5±0.14µs        ? ?/sec    1.01     12.6±0.23µs        ? 
?/sec
   arrow_array_reader/UInt32Array/byte_stream_split encoded, optional, half 
NULLs    1.02     65.0±0.65µs        ? ?/sec    1.00     64.1±0.83µs        ? 
?/sec
   arrow_array_reader/UInt32Array/byte_stream_split encoded, optional, no NULLs 
     1.01     15.8±0.20µs        ? ?/sec    1.00     15.7±0.16µs        ? ?/sec
   arrow_array_reader/UInt32Array/dictionary encoded, mandatory, no NULLs       
     1.00     42.9±0.57µs        ? ?/sec    1.00     42.9±0.56µs        ? ?/sec
   arrow_array_reader/UInt32Array/dictionary encoded, optional, half NULLs      
     1.01     83.8±1.66µs        ? ?/sec    1.00     82.8±0.82µs        ? ?/sec
   arrow_array_reader/UInt32Array/dictionary encoded, optional, no NULLs        
     1.01     46.6±0.59µs        ? ?/sec    1.00     46.3±0.59µs        ? ?/sec
   arrow_array_reader/UInt32Array/plain encoded, mandatory, no NULLs            
     1.00     11.7±0.15µs        ? ?/sec    1.04     12.1±0.14µs        ? ?/sec
   arrow_array_reader/UInt32Array/plain encoded, optional, half NULLs           
     1.01     64.4±0.67µs        ? ?/sec    1.00     64.0±0.80µs        ? ?/sec
   arrow_array_reader/UInt32Array/plain encoded, optional, no NULLs             
     1.00     14.9±0.18µs        ? ?/sec    1.03     15.3±0.25µs        ? ?/sec
   arrow_array_reader/UInt64Array/binary packed skip, mandatory, no NULLs       
     1.00     44.7±0.55µs        ? ?/sec    1.02     45.6±0.57µs        ? ?/sec
   arrow_array_reader/UInt64Array/binary packed skip, optional, half NULLs      
     1.00     54.8±0.79µs        ? ?/sec    1.00     54.7±0.61µs        ? ?/sec
   arrow_array_reader/UInt64Array/binary packed skip, optional, no NULLs        
     1.01     46.7±0.74µs        ? ?/sec    1.00     46.3±0.78µs        ? ?/sec
   arrow_array_reader/UInt64Array/binary packed, mandatory, no NULLs            
     1.00     61.0±1.11µs        ? ?/sec    1.02     62.4±0.91µs        ? ?/sec
   arrow_array_reader/UInt64Array/binary packed, optional, half NULLs           
     1.00     95.7±1.26µs        ? ?/sec    1.01     97.2±1.49µs        ? ?/sec
   arrow_array_reader/UInt64Array/binary packed, optional, no NULLs             
     1.00     65.3±0.84µs        ? ?/sec    1.00     65.4±0.95µs        ? ?/sec
   arrow_array_reader/UInt64Array/byte_stream_split encoded, mandatory, no 
NULLs     1.00     64.1±0.87µs        ? ?/sec    1.00     63.8±0.82µs        ? 
?/sec
   arrow_array_reader/UInt64Array/byte_stream_split encoded, optional, half 
NULLs    1.01     95.4±0.99µs        ? ?/sec    1.00     94.6±1.43µs        ? 
?/sec
   arrow_array_reader/UInt64Array/byte_stream_split encoded, optional, no NULLs 
     1.00     67.2±0.78µs        ? ?/sec    1.00     67.2±0.84µs        ? ?/sec
   arrow_array_reader/UInt64Array/dictionary encoded, mandatory, no NULLs       
     1.04     49.0±0.65µs        ? ?/sec    1.00     47.1±0.49µs        ? ?/sec
   arrow_array_reader/UInt64Array/dictionary encoded, optional, half NULLs      
     1.00     85.9±1.29µs        ? ?/sec    1.00     85.5±0.93µs        ? ?/sec
   arrow_array_reader/UInt64Array/dictionary encoded, optional, no NULLs        
     1.03     51.8±0.57µs        ? ?/sec    1.00     50.2±0.63µs        ? ?/sec
   arrow_array_reader/UInt64Array/plain encoded, mandatory, no NULLs            
     1.04     26.5±0.34µs        ? ?/sec    1.00     25.4±0.44µs        ? ?/sec
   arrow_array_reader/UInt64Array/plain encoded, optional, half NULLs           
     1.02     74.6±1.43µs        ? ?/sec    1.00     73.4±0.88µs        ? ?/sec
   arrow_array_reader/UInt64Array/plain encoded, optional, no NULLs             
     1.00     29.0±0.37µs        ? ?/sec    1.00     28.9±0.47µs        ? ?/sec
   arrow_array_reader/UInt8Array/binary packed skip, mandatory, no NULLs        
     1.10     49.4±0.55µs        ? ?/sec    1.00     45.0±0.85µs        ? ?/sec
   arrow_array_reader/UInt8Array/binary packed skip, optional, half NULLs       
     1.39     78.2±0.80µs        ? ?/sec    1.00     56.1±0.61µs        ? ?/sec
   arrow_array_reader/UInt8Array/binary packed skip, optional, no NULLs         
     1.06     51.6±0.66µs        ? ?/sec    1.00     48.6±6.94µs        ? ?/sec
   arrow_array_reader/UInt8Array/binary packed, mandatory, no NULLs             
     1.15     70.2±0.81µs        ? ?/sec    1.00     61.2±0.85µs        ? ?/sec
   arrow_array_reader/UInt8Array/binary packed, optional, half NULLs            
     1.48    138.2±2.01µs        ? ?/sec    1.00     93.1±1.14µs        ? ?/sec
   arrow_array_reader/UInt8Array/binary packed, optional, no NULLs              
     1.14     73.5±1.20µs        ? ?/sec    1.00     64.7±1.06µs        ? ?/sec
   arrow_array_reader/UInt8Array/byte_stream_split encoded, mandatory, no NULLs 
     1.52     30.7±0.36µs        ? ?/sec    1.00     20.2±0.25µs        ? ?/sec
   arrow_array_reader/UInt8Array/byte_stream_split encoded, optional, half 
NULLs     1.61    116.4±1.57µs        ? ?/sec    1.00     72.3±1.13µs        ? 
?/sec
   arrow_array_reader/UInt8Array/byte_stream_split encoded, optional, no NULLs  
     1.35     33.6±0.80µs        ? ?/sec    1.00     24.8±0.35µs        ? ?/sec
   arrow_array_reader/UInt8Array/dictionary encoded, mandatory, no NULLs        
     1.14     59.1±0.53µs        ? ?/sec    1.00     52.0±7.15µs        ? ?/sec
   arrow_array_reader/UInt8Array/dictionary encoded, optional, half NULLs       
     1.49    134.2±2.16µs        ? ?/sec    1.00     89.9±1.02µs        ? ?/sec
   arrow_array_reader/UInt8Array/dictionary encoded, optional, no NULLs         
     1.17     62.4±0.79µs        ? ?/sec    1.00     53.2±0.78µs        ? ?/sec
   arrow_array_reader/UInt8Array/plain encoded, mandatory, no NULLs             
     1.51     28.7±0.48µs        ? ?/sec    1.00     19.0±0.24µs        ? ?/sec
   arrow_array_reader/UInt8Array/plain encoded, optional, half NULLs            
     1.66    117.0±2.70µs        ? ?/sec    1.00     70.5±0.78µs        ? ?/sec
   arrow_array_reader/UInt8Array/plain encoded, optional, no NULLs              
     1.43     31.9±0.58µs        ? ?/sec    1.00     22.3±0.35µs        ? ?/sec
   ```
   
   </details


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