HaoYang670 commented on pull request #1361:
URL: https://github.com/apache/arrow-rs/pull/1361#issuecomment-1050445770


   # Performance
   run `cargo bench -- json_list_primitive_to_record_batch`
   
   ## Before
   ```bash
   json_list_primitive_to_record_batch                                          
                                   
                           time:   [17.513 us 17.536 us 17.563 us]
                           change: [+0.0716% +0.4880% +0.8879%] (p = 0.01 < 
0.05)
                           Change within noise threshold.
   Found 11 outliers among 100 measurements (11.00%)
     2 (2.00%) low mild
     4 (4.00%) high mild
     5 (5.00%) high severe
   ```
   
   ## After
   ```bash
   json_list_primitive_to_record_batch                                          
                                   
                           time:   [16.754 us 16.769 us 16.785 us]
                           change: [+0.4428% +1.0700% +1.7171%] (p = 0.00 < 
0.05)
                           Change within noise threshold.
   Found 10 outliers among 100 measurements (10.00%)
     4 (4.00%) high mild
     6 (6.00%) high severe
   ```
   
   No performance penalty.
   


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