liukun4515 commented on PR #2551:
URL: https://github.com/apache/arrow-rs/pull/2551#issuecomment-1222061269
cast decimal128 to decimal128 512
time: [3.4851 us 3.5120 us 3.5413 us]
change: [-31.129% -29.411% -27.777%] (p = 0.00 <
0.05)
Performance has improved.
Found 2 outliers among 100 measurements (2.00%)
1 (1.00%) high mild
1 (1.00%) high severe
cast decimal128 to decimal256 512
time: [102.42 us 104.41 us 106.54 us]
change: [-2.4822% -0.9755% +0.4987%] (p = 0.22 >
0.05)
No change in performance detected.
The performance of casting decimal has been improve significantly for the
decimal128 to decimal128 about 30%, when the situation meet the no validation
requirement.
@tustvold @alamb
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