gstvg commented on PR #6303:
URL: https://github.com/apache/arrow-rs/pull/6303#issuecomment-2308863584
```
$ RUSTFLAGS='-C target-feature=+avx2' cargo bench --bench union_array
union logical nulls 4096 1 children
time: [8.9139 ns 8.9932 ns 9.0887 ns]
Found 18 outliers among 100 measurements (18.00%)
5 (5.00%) high mild
13 (13.00%) high severe
union logical nulls 4096 2 children
time: [1.4903 µs 1.4969 µs 1.5055 µs]
Found 18 outliers among 100 measurements (18.00%)
1 (1.00%) low severe
3 (3.00%) high mild
14 (14.00%) high severe
union logical nulls 4096 3 children
time: [6.1631 µs 6.1999 µs 6.2449 µs]
Found 13 outliers among 100 measurements (13.00%)
1 (1.00%) high mild
12 (12.00%) high severe
union logical nulls 4096 4 children
time: [6.1878 µs 6.2374 µs 6.2976 µs]
Found 16 outliers among 100 measurements (16.00%)
1 (1.00%) high mild
15 (15.00%) high severe
union logical nulls 4096 5 children
time: [6.1996 µs 6.2488 µs 6.3094 µs]
Found 18 outliers among 100 measurements (18.00%)
1 (1.00%) high mild
17 (17.00%) high severe
union logical nulls 4096 6 children
time: [6.2286 µs 6.2827 µs 6.3441 µs]
Found 21 outliers among 100 measurements (21.00%)
3 (3.00%) high mild
18 (18.00%) high severe
single with nulls 4096 time: [1.2346 µs 1.2493 µs 1.2678 µs]
Found 14 outliers among 100 measurements (14.00%)
1 (1.00%) high mild
13 (13.00%) high severe
```
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