epotyom commented on PR #13568:
URL: https://github.com/apache/lucene/pull/13568#issuecomment-2289194440
@gsmiller my results for `wikimedium10k` are quite different, but it might
be that something is wrong with my setup, double-checking; I'm also running
tests for `wikimediumall` but they are not done yet as I've never built index
for the new Lucene912 codec.
The change in IndexSearcher#search and CollectorOwner that might be related
is that `CollectorOwner` keeps `Collector`s in a synchronised list, which I
think can cause noticeable performance impact it the query exec itself is very
fast? I'll look at JFR files too see if that's the case when the test is done.
```
TaskQPS baseline StdDevQPS
my_modified_version StdDev Pct diff p-value
BrowseDateSSDVFacets 1163.38 (17.2%) 1119.67
(20.7%) -3.8% ( -35% - 41%) 0.532
HighSpanNear 497.58 (10.7%) 479.03
(14.4%) -3.7% ( -26% - 23%) 0.353
Fuzzy1 298.47 (8.2%) 287.84
(6.8%) -3.6% ( -17% - 12%) 0.133
BrowseMonthTaxoFacets 1806.93 (8.7%) 1750.34
(8.1%) -3.1% ( -18% - 14%) 0.238
BrowseRandomLabelSSDVFacets 694.14 (11.0%) 683.07
(8.7%) -1.6% ( -19% - 20%) 0.610
MedIntervalsOrdered 1891.59 (7.1%) 1870.17
(5.2%) -1.1% ( -12% - 12%) 0.565
Respell 294.59 (9.6%) 291.84
(7.5%) -0.9% ( -16% - 17%) 0.732
BrowseDateTaxoFacets 1983.50 (8.3%) 1964.99
(8.7%) -0.9% ( -16% - 17%) 0.730
HighPhrase 504.41 (12.6%) 499.78
(10.0%) -0.9% ( -20% - 24%) 0.799
BrowseDayOfYearSSDVFacets 2187.97 (20.3%) 2168.49
(16.7%) -0.9% ( -31% - 45%) 0.880
LowPhrase 1307.00 (8.0%) 1301.30
(8.4%) -0.4% ( -15% - 17%) 0.867
AndHighLow 1332.73 (7.3%) 1328.35
(9.3%) -0.3% ( -15% - 17%) 0.901
HighTerm 809.67 (12.6%) 808.34
(8.7%) -0.2% ( -19% - 24%) 0.962
OrHighMed 802.15 (8.0%) 800.86
(7.8%) -0.2% ( -14% - 16%) 0.948
Prefix3 564.39 (8.5%) 563.52
(12.7%) -0.2% ( -19% - 22%) 0.964
BrowseMonthSSDVFacets 2178.32 (20.0%) 2183.69
(15.7%) 0.2% ( -29% - 45%) 0.965
AndHighMed 921.59 (8.7%) 925.68
(9.8%) 0.4% ( -16% - 20%) 0.880
MedSloppyPhrase 409.88 (14.8%) 411.84
(14.5%) 0.5% ( -25% - 34%) 0.918
OrHighHigh 460.88 (12.6%) 464.13
(10.4%) 0.7% ( -19% - 27%) 0.847
Wildcard 387.27 (10.3%) 391.08
(8.2%) 1.0% ( -15% - 21%) 0.739
MedPhrase 839.57 (14.4%) 848.45
(7.9%) 1.1% ( -18% - 27%) 0.773
AndHighHigh 507.56 (10.7%) 513.02
(11.8%) 1.1% ( -19% - 26%) 0.763
BrowseDayOfYearTaxoFacets 1833.28 (7.8%) 1859.33
(6.4%) 1.4% ( -11% - 16%) 0.528
OrHighLow 710.49 (11.1%) 720.63
(8.6%) 1.4% ( -16% - 23%) 0.650
MedSpanNear 904.17 (10.6%) 918.71
(9.2%) 1.6% ( -16% - 23%) 0.607
IntNRQ 894.42 (9.9%) 911.12
(9.9%) 1.9% ( -16% - 23%) 0.549
MedTerm 2175.06 (7.6%) 2222.74
(4.8%) 2.2% ( -9% - 15%) 0.278
LowSpanNear 718.73 (13.9%) 734.53
(9.6%) 2.2% ( -18% - 29%) 0.560
Fuzzy2 123.89 (6.3%) 126.72
(6.6%) 2.3% ( -9% - 16%) 0.261
BrowseRandomLabelTaxoFacets 916.56 (6.3%) 938.42
(7.4%) 2.4% ( -10% - 17%) 0.273
LowSloppyPhrase 1118.91 (9.4%) 1167.18
(7.8%) 4.3% ( -11% - 23%) 0.114
HighSloppyPhrase 528.92 (10.6%) 552.04
(11.1%) 4.4% ( -15% - 29%) 0.203
LowIntervalsOrdered 1626.45 (9.7%) 1701.81
(10.5%) 4.6% ( -14% - 27%) 0.148
LowTerm 2339.32 (8.1%) 2457.03
(7.6%) 5.0% ( -9% - 22%) 0.044
HighIntervalsOrdered 683.07 (12.3%) 719.64
(15.7%) 5.4% ( -20% - 38%) 0.231
HighTermMonthSort 859.86 (10.8%) 916.82
(7.6%) 6.6% ( -10% - 28%) 0.025
PKLookup 171.76 (15.8%) 183.62
(17.1%) 6.9% ( -22% - 47%) 0.184
HighTermDayOfYearSort 994.52 (9.1%) 1066.75
(8.3%) 7.3% ( -9% - 27%) 0.008
```
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