jpountz commented on PR #12444:
URL: https://github.com/apache/lucene/pull/12444#issuecomment-1637792504

   Here is the usual set of queries, still on wikimedium10m. Sparser 
disjunctive queries like `Fuzzy1`, `Fuzzy2` and `OrHighLow` can get a slowdown 
when the majority of clauses have very few matches per window of 2048 doc IDs, 
so the bitset adds more overhead than it removes.
   
   ```
                               TaskQPS baseline      StdDevQPS 
my_modified_version      StdDev                Pct diff p-value
                             Fuzzy1      114.52      (2.1%)      101.50      
(1.3%)  -11.4% ( -14% -   -8%) 0.000
          BrowseDayOfYearTaxoFacets       44.09      (4.4%)       41.73     
(16.0%)   -5.3% ( -24% -   15%) 0.150
               BrowseDateTaxoFacets       43.48      (3.1%)       41.17     
(16.0%)   -5.3% ( -23% -   14%) 0.145
        BrowseRandomLabelTaxoFacets       36.20      (5.4%)       34.54     
(15.0%)   -4.6% ( -23% -   16%) 0.199
                          OrHighLow      504.34      (3.3%)      483.98      
(5.4%)   -4.0% ( -12% -    4%) 0.004
                             Fuzzy2       73.82      (2.3%)       71.64      
(1.0%)   -3.0% (  -6% -    0%) 0.000
                       OrNotHighLow     1132.98      (4.6%)     1100.07      
(4.5%)   -2.9% ( -11% -    6%) 0.044
                         AndHighLow     1468.55      (2.9%)     1435.02      
(3.3%)   -2.3% (  -8% -    4%) 0.020
              BrowseMonthTaxoFacets       28.59      (7.9%)       27.99     
(12.2%)   -2.1% ( -20% -   19%) 0.514
               BrowseDateSSDVFacets        5.66      (8.2%)        5.56      
(7.3%)   -1.7% ( -15% -   15%) 0.501
                   HighSloppyPhrase       22.58      (4.2%)       22.21      
(4.5%)   -1.6% (  -9% -    7%) 0.241
                       HighSpanNear       42.83      (5.2%)       42.14      
(7.2%)   -1.6% ( -13% -   11%) 0.416
                        AndHighHigh       47.72      (6.7%)       47.10      
(4.9%)   -1.3% ( -12% -   11%) 0.485
                         AndHighMed      337.19      (4.8%)      333.34      
(3.7%)   -1.1% (  -9% -    7%) 0.399
                  HighTermTitleSort      103.35      (6.8%)      102.27      
(6.3%)   -1.0% ( -13% -   12%) 0.615
                    LowSloppyPhrase       32.10      (2.7%)       31.78      
(2.3%)   -1.0% (  -5% -    4%) 0.203
              HighTermDayOfYearSort      381.91      (2.9%)      378.63      
(2.8%)   -0.9% (  -6% -    5%) 0.346
                       OrNotHighMed      552.91      (4.2%)      549.11      
(4.5%)   -0.7% (  -9% -    8%) 0.617
                         TermDTSort      181.43      (2.3%)      180.22      
(2.3%)   -0.7% (  -5% -    3%) 0.353
        BrowseRandomLabelSSDVFacets       15.36      (9.1%)       15.28      
(9.5%)   -0.5% ( -17% -   19%) 0.864
                          LowPhrase      538.67      (4.0%)      536.18      
(3.8%)   -0.5% (  -7% -    7%) 0.710
              BrowseMonthSSDVFacets       20.59      (1.6%)       20.49      
(1.7%)   -0.5% (  -3% -    2%) 0.394
                        MedSpanNear       15.50      (5.1%)       15.44      
(4.5%)   -0.4% (  -9% -    9%) 0.788
                            Respell       58.48      (1.9%)       58.25      
(1.4%)   -0.4% (  -3% -    3%) 0.465
                  HighTermMonthSort     3272.95      (5.1%)     3260.51      
(3.8%)   -0.4% (  -8% -    8%) 0.789
            AndHighMedDayTaxoFacets       54.85      (2.3%)       54.70      
(1.6%)   -0.3% (  -4% -    3%) 0.681
                        LowSpanNear       37.04      (4.4%)       36.95      
(3.8%)   -0.2% (  -8% -    8%) 0.855
                       OrHighNotMed      572.03      (5.9%)      571.26      
(5.5%)   -0.1% ( -10% -   11%) 0.941
           AndHighHighDayTaxoFacets       13.89      (4.7%)       13.89      
(2.7%)   -0.0% (  -7% -    7%) 0.974
                    MedSloppyPhrase        6.27      (4.2%)        6.27      
(5.4%)   -0.0% (  -9% -    9%) 0.980
                            Prefix3      647.76      (2.6%)      648.17      
(1.9%)    0.1% (  -4% -    4%) 0.929
                           PKLookup      242.95      (5.0%)      243.25      
(4.4%)    0.1% (  -8% -    9%) 0.934
                         HighPhrase       80.44      (3.6%)       80.57      
(4.1%)    0.2% (  -7% -    8%) 0.899
                           Wildcard       57.52      (3.0%)       57.61      
(2.6%)    0.2% (  -5% -    5%) 0.852
                          MedPhrase       73.08      (2.7%)       73.28      
(3.4%)    0.3% (  -5% -    6%) 0.773
             OrHighMedDayTaxoFacets       19.03      (3.1%)       19.09      
(2.9%)    0.3% (  -5% -    6%) 0.723
                      OrNotHighHigh      524.34      (5.4%)      527.14      
(5.7%)    0.5% ( -10% -   12%) 0.761
                MedIntervalsOrdered      128.67      (4.8%)      129.38      
(3.9%)    0.6% (  -7% -    9%) 0.688
               MedTermDayTaxoFacets       52.89      (6.6%)       53.31      
(4.4%)    0.8% (  -9% -   12%) 0.655
                       OrHighNotLow      432.03      (6.4%)      435.93      
(7.6%)    0.9% ( -12% -   15%) 0.685
                      OrHighNotHigh      240.53      (6.9%)      242.89      
(7.2%)    1.0% ( -12% -   16%) 0.660
                            MedTerm      684.80      (5.7%)      691.78      
(6.3%)    1.0% ( -10% -   13%) 0.591
               HighIntervalsOrdered        2.08      (5.0%)        2.10      
(5.1%)    1.1% (  -8% -   11%) 0.509
               HighTermTitleBDVSort       18.90      (4.9%)       19.11      
(3.0%)    1.1% (  -6% -    9%) 0.390
          BrowseDayOfYearSSDVFacets       20.08      (8.3%)       20.44     
(11.7%)    1.8% ( -16% -   23%) 0.574
                          OrHighMed      175.91      (3.4%)      179.48      
(4.0%)    2.0% (  -5% -    9%) 0.085
                LowIntervalsOrdered      324.63      (5.4%)      331.22      
(4.5%)    2.0% (  -7% -   12%) 0.199
                           HighTerm      566.09      (6.0%)      577.68      
(6.8%)    2.0% ( -10% -   15%) 0.310
                             IntNRQ     1518.60      (6.5%)     1555.96      
(7.7%)    2.5% ( -10% -   17%) 0.273
                            LowTerm      965.29      (5.9%)      992.04      
(6.1%)    2.8% (  -8% -   15%) 0.146
                         OrHighHigh       53.17      (4.6%)       55.48      
(5.6%)    4.3% (  -5% -   15%) 0.007
   ```


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