pepijnve commented on PR #23211:
URL: https://github.com/apache/datafusion/pull/23211#issuecomment-4918302694
A local run comparing main to this branch gives me these results on my mbp.
This is on aarch64 though; perhaps the difference is only on x86_64?
```
concat_utf8view/concat/nulls_0
time: [69.578 µs 69.689 µs 69.812 µs]
change: [−27.441% −26.921% −26.416%] (p = 0.00 <
0.05)
Performance has improved.
Found 8 outliers among 100 measurements (8.00%)
6 (6.00%) high mild
2 (2.00%) high severe
concat_utf8view/concat/nulls_10
time: [71.570 µs 72.055 µs 72.628 µs]
change: [−29.967% −29.463% −28.992%] (p = 0.00 <
0.05)
Performance has improved.
concat_utf8view/concat/nulls_50
time: [54.130 µs 54.572 µs 55.013 µs]
change: [−1.1417% −0.0261% +1.1042%] (p = 0.96 >
0.05)
No change in performance detected.
Found 4 outliers among 100 measurements (4.00%)
2 (2.00%) high mild
2 (2.00%) high severe
```
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