theirix commented on PR #19980:
URL: https://github.com/apache/datafusion/pull/19980#issuecomment-3807676283
Bench results including string view (performance improvement up to 71%):
<details>
left size=1024/string_array positive n/1024
time: [23.798 µs 24.031 µs 24.314 µs]
change: [−76.797% −76.528% −76.258%] (p = 0.00 <
0.05)
Performance has improved.
Found 10 outliers among 100 measurements (10.00%)
1 (1.00%) low mild
4 (4.00%) high mild
5 (5.00%) high severe
left size=1024/string_array negative n/1024
time: [22.595 µs 22.847 µs 23.168 µs]
change: [−87.229% −86.860% −86.364%] (p = 0.00 <
0.05)
Performance has improved.
Found 16 outliers among 100 measurements (16.00%)
10 (10.00%) high mild
6 (6.00%) high severe
left size=4096/string_array positive n/4096
time: [91.667 µs 93.497 µs 95.918 µs]
change: [−77.238% −77.002% −76.749%] (p = 0.00 <
0.05)
Performance has improved.
Found 7 outliers among 100 measurements (7.00%)
2 (2.00%) high mild
5 (5.00%) high severe
left size=4096/string_array negative n/4096
time: [143.00 µs 144.61 µs 147.09 µs]
change: [−80.111% −79.845% −79.592%] (p = 0.00 <
0.05)
Performance has improved.
Found 9 outliers among 100 measurements (9.00%)
4 (4.00%) high mild
5 (5.00%) high severe
left size=1024/string_view_array positive n/1024
time: [29.146 µs 29.498 µs 29.944 µs]
change: [−71.392% −71.024% −70.658%] (p = 0.00 <
0.05)
Performance has improved.
Found 10 outliers among 100 measurements (10.00%)
1 (1.00%) low mild
2 (2.00%) high mild
7 (7.00%) high severe
left size=1024/string_view_array negative n/1024
time: [38.693 µs 40.003 µs 41.691 µs]
change: [−67.517% −66.564% −65.535%] (p = 0.00 <
0.05)
Performance has improved.
Found 16 outliers among 100 measurements (16.00%)
3 (3.00%) high mild
13 (13.00%) high severe
left size=4096/string_view_array positive n/4096
time: [141.09 µs 146.31 µs 152.57 µs]
change: [−65.138% −64.507% −63.801%] (p = 0.00 <
0.05)
Performance has improved.
Found 21 outliers among 100 measurements (21.00%)
5 (5.00%) low mild
5 (5.00%) high mild
11 (11.00%) high severe
left size=4096/string_view_array negative n/4096
time: [194.03 µs 194.67 µs 195.37 µs]
change: [−59.304% −58.830% −58.400%] (p = 0.00 <
0.05)
Performance has improved.
Found 10 outliers among 100 measurements (10.00%)
2 (2.00%) low mild
2 (2.00%) high mild
6 (6.00%) high severe
</details>
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