jpountz commented on PR #15039:
URL: https://github.com/apache/lucene/pull/15039#issuecomment-3166506010
Even though `SimScorer#score` is monomorphic when running luceneutil, this
change still yields a speedup.
```
TaskQPS baseline StdDevQPS
my_modified_version StdDev Pct diff p-value
TermTitleSort 84.03 (9.4%) 82.36
(4.7%) -2.0% ( -14% - 13%) 0.479
CombinedTerm 39.33 (0.8%) 39.03
(0.7%) -0.8% ( -2% - 0%) 0.005
FilteredAndHighHigh 78.80 (1.7%) 78.22
(1.7%) -0.7% ( -4% - 2%) 0.254
FilteredAndStopWords 65.21 (1.8%) 64.75
(2.0%) -0.7% ( -4% - 3%) 0.328
TermDTSort 384.93 (3.0%) 383.03
(2.8%) -0.5% ( -6% - 5%) 0.652
FilteredPhrase 32.27 (1.1%) 32.17
(1.2%) -0.3% ( -2% - 2%) 0.485
CountTerm 9292.09 (3.8%) 9271.80
(2.2%) -0.2% ( -6% - 6%) 0.853
FilteredAnd3Terms 191.13 (0.7%) 190.90
(0.8%) -0.1% ( -1% - 1%) 0.649
CountAndHighMed 310.74 (1.4%) 310.39
(1.4%) -0.1% ( -2% - 2%) 0.832
CountAndHighHigh 360.15 (2.1%) 359.87
(1.9%) -0.1% ( -3% - 3%) 0.918
FilteredOr3Terms 167.20 (1.0%) 167.09
(0.8%) -0.1% ( -1% - 1%) 0.843
CountPhrase 4.26 (1.2%) 4.26
(1.6%) -0.0% ( -2% - 2%) 0.964
CountFilteredOrHighHigh 137.25 (0.9%) 137.24
(0.7%) -0.0% ( -1% - 1%) 0.998
FilteredAnd2Terms2StopWords 215.45 (0.9%) 215.45
(0.8%) -0.0% ( -1% - 1%) 0.999
CombinedAndHighHigh 23.39 (1.1%) 23.40
(0.9%) 0.0% ( -1% - 2%) 0.924
CombinedOrHighHigh 23.19 (1.4%) 23.21
(0.9%) 0.1% ( -2% - 2%) 0.883
CountFilteredOrHighMed 149.14 (0.7%) 149.25
(0.6%) 0.1% ( -1% - 1%) 0.765
CountFilteredOrMany 27.26 (1.4%) 27.29
(1.1%) 0.1% ( -2% - 2%) 0.862
FilteredAndHighMed 156.46 (1.0%) 156.63
(1.0%) 0.1% ( -1% - 2%) 0.790
FilteredOrHighMed 153.23 (1.0%) 153.40
(1.0%) 0.1% ( -1% - 2%) 0.765
FilteredOrMany 16.50 (2.4%) 16.53
(1.6%) 0.2% ( -3% - 4%) 0.843
CombinedOrHighMed 88.23 (0.9%) 88.39
(0.7%) 0.2% ( -1% - 1%) 0.553
CombinedAndHighMed 89.40 (0.8%) 89.59
(0.9%) 0.2% ( -1% - 1%) 0.510
AndMedOrHighHigh 88.85 (1.1%) 89.04
(1.3%) 0.2% ( -2% - 2%) 0.619
CountOrHighMed 362.64 (1.4%) 363.48
(1.3%) 0.2% ( -2% - 3%) 0.653
CountFilteredPhrase 25.46 (1.7%) 25.52
(1.5%) 0.3% ( -2% - 3%) 0.669
OrMany 23.56 (2.5%) 23.63
(2.2%) 0.3% ( -4% - 5%) 0.744
FilteredIntNRQ 298.55 (0.6%) 299.46
(0.8%) 0.3% ( -1% - 1%) 0.261
FilteredOr2Terms2StopWords 147.06 (1.0%) 147.54
(1.1%) 0.3% ( -1% - 2%) 0.415
CountOrHighHigh 343.27 (2.1%) 344.40
(2.0%) 0.3% ( -3% - 4%) 0.672
FilteredTerm 162.14 (2.8%) 162.70
(2.2%) 0.3% ( -4% - 5%) 0.718
CountOrMany 29.15 (1.4%) 29.27
(1.2%) 0.4% ( -2% - 3%) 0.420
FilteredOrHighHigh 66.92 (2.1%) 67.25
(1.8%) 0.5% ( -3% - 4%) 0.503
FilteredOrStopWords 45.53 (2.3%) 45.78
(2.1%) 0.6% ( -3% - 5%) 0.504
FilteredPrefix3 151.12 (2.5%) 152.02
(1.8%) 0.6% ( -3% - 5%) 0.467
TermMonthSort 3335.12 (2.1%) 3355.82
(2.1%) 0.6% ( -3% - 4%) 0.434
And3Terms 242.26 (1.1%) 244.68
(1.0%) 1.0% ( -1% - 3%) 0.012
AndHighOrMedMed 50.85 (1.6%) 51.36
(1.1%) 1.0% ( -1% - 3%) 0.059
And2Terms2StopWords 205.51 (1.4%) 208.13
(1.3%) 1.3% ( -1% - 3%) 0.011
TermDayOfYearSort 284.17 (2.6%) 288.16
(1.5%) 1.4% ( -2% - 5%) 0.077
Or3Terms 232.40 (1.6%) 235.89
(1.3%) 1.5% ( -1% - 4%) 0.006
Or2Terms2StopWords 205.85 (1.5%) 209.59
(1.2%) 1.8% ( 0% - 4%) 0.000
AndHighMed 203.33 (1.5%) 207.11
(1.5%) 1.9% ( -1% - 4%) 0.001
AndStopWords 47.25 (2.3%) 48.13
(2.0%) 1.9% ( -2% - 6%) 0.022
Term 663.37 (5.9%) 675.77
(5.7%) 1.9% ( -9% - 14%) 0.397
AndHighHigh 69.26 (2.4%) 70.92
(2.0%) 2.4% ( -1% - 6%) 0.004
OrHighMed 257.23 (2.2%) 263.59
(1.8%) 2.5% ( -1% - 6%) 0.001
OrStopWords 48.68 (3.1%) 50.25
(2.1%) 3.2% ( -1% - 8%) 0.001
OrHighHigh 77.59 (2.9%) 80.15
(2.1%) 3.3% ( -1% - 8%) 0.001
OrHighRare 285.82 (9.8%) 299.46
(6.3%) 4.8% ( -10% - 23%) 0.125
```
There are still a number of places where score computations are not
vectorized, specifically:
- When computing scores from impacts,
- MaxScore's non-essential clauses,
- All BlockMaxConjunctionBulkScorer's clauses but the leading clause.
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