Fsharp.ParallelGroupBy.Benchmarks

Benchmarks for implementation of Array.Parallel.GroupBy

There are two main baselines to compare with:

• Array.groupBy ; especially for smaller sizes (<100K) OR very cheap projection. Has the lowest allocation profile
• PLINQ's GroupBy, especially for bigger sizes (>100K) OR expensive projections

The benchmark uses three main profiles which differ in:

• The number of final groups/buckets (controlled by modulo operation)
• Time complexity of the projection. More complex gives advantage to parallel scenarios, since the projection function can be parallelized.
• Especially for the combination of many final buckets AND having a cheap projection function the inner overhead of .groupBy implementation stands out.

Different tasks

• Ref vs Struct
• Cheap vs expensive projection
• Few vs many resulting buckets

type ReferenceRecordExpensiveProjection = {Id : int; Value : float}
    with interface IBenchMarkElement<ReferenceRecordExpensiveProjection> 
            with 
                static member Create(id,value) = {Id = id; Value = value}
                static member Projection() = fun x -> (x.Id.ToString().GetHashCode() * (x.Value |> sin |> string |> hash)) % 20

type ReferenceRecordNormal = {Id : int; Value : float}
    with interface IBenchMarkElement<ReferenceRecordNormal> 
            with 
                static member Create(id,value) = {Id = id; Value = value}
                static member Projection() = fun x -> (x.Id  ) % 128

type ReferenceRecordManyBuckets = {Id : int; Value : float}
    with interface IBenchMarkElement<ReferenceRecordManyBuckets> 
            with 
                static member Create(id,value) = {Id = id; Value = value}
                static member Projection() = fun x -> (x.Value.GetHashCode() * x.Id.GetHashCode() ) % 10_000

[<Struct>]
type StructRecord = {Id : int; Value : float}
    with interface IBenchMarkElement<StructRecord> 
            with 
                static member Create(id,value) = {Id = id; Value = value}
                static member Projection() = fun x -> x.Id % 20

[<Struct>]
type StructRecordManyBuckets = {Id : int; Value : float}
    with interface IBenchMarkElement<StructRecordManyBuckets> 
            with 
                static member Create(id,value) = {Id = id; Value = value}
                static member Projection() = fun x -> x.Id % 10_000

Results

BenchmarkDotNet=v0.13.5, OS=Windows 11 (10.0.22621.1265/22H2/2022Update/SunValley2) 11th Gen Intel Core i9-11950H 2.60GHz, 1 CPU, 16 logical and 8 physical cores .NET SDK=7.0.200 [Host] : .NET 7.0.3 (7.0.323.6910), X64 RyuJIT AVX2 DEBUG DefaultJob : .NET 7.0.3 (7.0.323.6910), X64 RyuJIT AVX2

Method	Type	NumberOfItems	Mean	Error	StdDev	Median	Ratio	RatioSD	Completed Work Items	Lock Contentions	Gen0	Gen1	Gen2	Allocated	Alloc Ratio
SortByForReference	StructRecord	4000	157.34 us	3.130 us	4.589 us	158.66 us	0.64	0.02	-	-	7.5684	-	-	93.8 KB	0.09
ArrayGroupBy	StructRecord	4000	49.91 us	0.502 us	0.445 us	49.93 us	0.20	0.00	-	-	18.6157	5.9814	-	228.49 KB	0.22
PLINQDefault	StructRecord	4000	243.54 us	4.831 us	5.169 us	241.53 us	1.00	0.00	15.0000	11.5552	89.1113	71.5332	-	1050.09 KB	1.00
EachChunkSeparatelyThenMerge	StructRecord	4000	50.78 us	1.011 us	1.661 us	50.28 us	0.21	0.01	17.4300	0.0014	36.9873	18.3716	-	373.26 KB	0.36
EachChunkSeparatelyThenCombineArrayBuilders	StructRecord	4000	78.19 us	1.523 us	2.233 us	78.42 us	0.32	0.01	4.1427	-	41.6260	19.7754	-	443.71 KB	0.42
GroupByInPlaceViaSortAndParallelSegmentation	StructRecord	4000	232.69 us	4.625 us	6.922 us	231.60 us	0.97	0.04	12.9634	0.0007	33.2031	2.1973	-	408.75 KB	0.39
SortThenCreateGroups	StructRecord	4000	60.08 us	1.200 us	2.757 us	60.60 us	0.25	0.01	-	-	7.0801	1.3428	-	87.22 KB	0.08
GroupByInPlaceViaSort	StructRecord	4000	201.53 us	1.099 us	0.974 us	201.29 us	0.83	0.02	11.9299	0.0012	33.4473	2.1973	-	410.21 KB	0.39
FullyOnParallelFor	StructRecord	4000	99.33 us	0.484 us	0.429 us	99.49 us	0.41	0.01	16.9712	0.4312	26.0010	25.8789	4.6387	301.7 KB	0.29
CountByThenAssign	StructRecord	4000	93.26 us	0.593 us	0.555 us	93.27 us	0.38	0.01	39.0732	0.0035	28.0762	2.1973	-	331.57 KB	0.32
ConcurrentMultiDictionairy	StructRecord	4000	238.74 us	4.677 us	7.142 us	238.31 us	0.99	0.04	21.9253	3.8013	43.4570	43.2129	10.0098	511.05 KB	0.49
SortByForReference	StructRecord	50000	3,174.35 us	59.483 us	125.470 us	3,122.32 us	3.77	0.11	-	-	281.2500	281.2500	281.2500	1172.01 KB	0.20
ArrayGroupBy	StructRecord	50000	614.27 us	12.269 us	26.932 us	628.04 us	0.70	0.04	-	-	272.4609	181.6406	-	3349.12 KB	0.58
PLINQDefault	StructRecord	50000	875.69 us	15.741 us	13.954 us	875.29 us	1.00	0.00	15.0000	11.1084	543.9453	509.7656	-	5732.01 KB	1.00
EachChunkSeparatelyThenMerge	StructRecord	50000	460.99 us	2.040 us	1.909 us	460.91 us	0.53	0.01	20.9961	0.0098	441.8945	419.9219	-	4074.11 KB	0.71
EachChunkSeparatelyThenCombineArrayBuilders	StructRecord	50000	523.48 us	4.572 us	4.053 us	522.71 us	0.60	0.01	11.4053	0.0049	448.2422	436.5234	-	4462.82 KB	0.78
GroupByInPlaceViaSortAndParallelSegmentation	StructRecord	50000	2,547.58 us	48.945 us	66.996 us	2,536.83 us	2.90	0.08	16.8125	0.0039	437.5000	58.5938	58.5938	4903.19 KB	0.86
SortThenCreateGroups	StructRecord	50000	1,400.43 us	7.804 us	6.918 us	1,400.28 us	1.60	0.03	-	-	250.0000	250.0000	250.0000	985.73 KB	0.17
GroupByInPlaceViaSort	StructRecord	50000	2,496.83 us	48.360 us	62.882 us	2,499.68 us	2.84	0.09	16.2500	-	437.5000	58.5938	58.5938	4904.5 KB	0.86
FullyOnParallelFor	StructRecord	50000	854.59 us	17.002 us	47.955 us	852.22 us	0.98	0.06	26.8164	0.5313	355.4688	296.8750	140.6250	3258.99 KB	0.57
CountByThenAssign	StructRecord	50000	867.73 us	3.743 us	2.922 us	868.52 us	0.99	0.02	43.5020	0.0342	331.0547	68.3594	-	3926.11 KB	0.68
ConcurrentMultiDictionairy	StructRecord	50000	1,894.83 us	37.555 us	102.806 us	1,878.45 us	2.28	0.13	29.2578	4.5352	671.8750	287.1094	103.5156	6129.31 KB	1.07
SortByForReference	StructRecord	100000	6,526.54 us	36.659 us	32.497 us	6,531.85 us	3.87	0.05	-	-	351.5625	351.5625	351.5625	2343.91 KB	0.24
ArrayGroupBy	StructRecord	100000	1,491.09 us	29.821 us	48.997 us	1,482.91 us	0.90	0.03	-	-	906.2500	882.8125	570.3125	6691 KB	0.68
PLINQDefault	StructRecord	100000	1,688.95 us	23.949 us	22.402 us	1,692.59 us	1.00	0.00	15.0000	11.9238	925.7813	898.4375	-	9850.66 KB	1.00
EachChunkSeparatelyThenMerge	StructRecord	100000	7,765.79 us	34.612 us	30.683 us	7,766.55 us	4.60	0.07	11.6797	-	867.1875	859.3750	492.1875	6462.66 KB	0.66
EachChunkSeparatelyThenCombineArrayBuilders	StructRecord	100000	7,792.92 us	111.135 us	103.956 us	7,783.29 us	4.61	0.08	6.2734	-	937.5000	929.6875	500.0000	7579.44 KB	0.77
GroupByInPlaceViaSortAndParallelSegmentation	StructRecord	100000	5,906.01 us	114.729 us	160.834 us	5,922.58 us	3.52	0.12	18.2109	0.0156	875.0000	109.3750	109.3750	9786.35 KB	0.99
SortThenCreateGroups	StructRecord	100000	2,941.68 us	39.248 us	34.793 us	2,946.18 us	1.74	0.02	-	-	496.0938	496.0938	496.0938	1962.37 KB	0.20
GroupByInPlaceViaSort	StructRecord	100000	5,401.30 us	60.446 us	53.584 us	5,409.64 us	3.20	0.05	16.9531	0.0078	875.0000	109.3750	109.3750	9787.61 KB	0.99
FullyOnParallelFor	StructRecord	100000	2,457.95 us	48.062 us	60.783 us	2,453.39 us	1.46	0.04	27.2422	0.5391	757.8125	472.6563	171.8750	6301.58 KB	0.64
CountByThenAssign	StructRecord	100000	1,829.96 us	22.224 us	19.701 us	1,824.30 us	1.08	0.02	42.9219	0.0566	650.3906	134.7656	-	7832.15 KB	0.80
ConcurrentMultiDictionairy	StructRecord	100000	4,520.13 us	117.857 us	347.505 us	4,485.39 us	2.59	0.12	35.8516	9.0938	1390.6250	593.7500	203.1250	12294.87 KB	1.25
SortByForReference	StructRecord	500000	37,637.68 us	596.748 us	558.198 us	37,700.91 us	2.29	0.12	-	-	428.5714	428.5714	428.5714	11718.96 KB	0.27
ArrayGroupBy	StructRecord	500000	10,356.70 us	203.026 us	350.209 us	10,327.10 us	0.65	0.05	-	-	1109.3750	1078.1250	906.2500	28302.64 KB	0.66
PLINQDefault	StructRecord	500000	16,173.89 us	338.247 us	997.330 us	16,213.97 us	1.00	0.00	15.0000	9.8438	2875.0000	2656.2500	968.7500	43070.85 KB	1.00
EachChunkSeparatelyThenMerge	StructRecord	500000	16,518.88 us	328.457 us	449.596 us	16,640.92 us	1.03	0.07	24.2500	0.0313	3562.5000	3531.2500	1000.0000	51212.87 KB	1.19
EachChunkSeparatelyThenCombineArrayBuilders	StructRecord	500000	16,336.73 us	320.264 us	507.973 us	16,246.87 us	1.02	0.07	13.7500	-	3625.0000	3250.0000	1000.0000	52208.41 KB	1.21
GroupByInPlaceViaSortAndParallelSegmentation	StructRecord	500000	21,331.05 us	210.012 us	196.445 us	21,212.17 us	1.30	0.07	25.8750	-	3937.5000	125.0000	125.0000	48848.84 KB	1.13
SortThenCreateGroups	StructRecord	500000	17,180.11 us	324.902 us	303.914 us	17,116.36 us	1.05	0.05	-	-	437.5000	437.5000	437.5000	9774.87 KB	0.23
GroupByInPlaceViaSort	StructRecord	500000	21,691.25 us	433.745 us	464.102 us	21,630.39 us	1.33	0.08	22.4688	-	3937.5000	125.0000	125.0000	48849.87 KB	1.13
FullyOnParallelFor	StructRecord	500000	11,887.66 us	236.797 us	686.992 us	11,963.15 us	0.74	0.06	32.1563	0.2969	2593.7500	2046.8750	656.2500	30962.9 KB	0.72
CountByThenAssign	StructRecord	500000	11,931.59 us	192.701 us	180.253 us	11,918.91 us	0.73	0.04	47.5156	0.0156	2828.1250	281.2500	265.6250	39100.24 KB	0.91
ConcurrentMultiDictionairy	StructRecord	500000	17,493.32 us	345.831 us	815.164 us	17,530.02 us	1.09	0.09	35.3438	1.2188	5625.0000	2875.0000	843.7500	61952.84 KB	1.44
SortByForReference	StructRecord	2500000	217,358.97 us	4,328.276 us	4,631.207 us	217,611.15 us	5.17	0.33	-	-	333.3333	333.3333	333.3333	58594.07 KB	0.32
ArrayGroupBy	StructRecord	2500000	42,360.29 us	741.462 us	693.564 us	42,506.54 us	1.00	0.06	-	-	1000.0000	923.0769	846.1538	120993.02 KB	0.67
PLINQDefault	StructRecord	2500000	42,835.68 us	850.729 us	2,005.268 us	43,037.62 us	1.00	0.00	15.0000	8.9167	3916.6667	3833.3333	1166.6667	181879.57 KB	1.00
EachChunkSeparatelyThenMerge	StructRecord	2500000	35,884.55 us	716.966 us	1,950.558 us	35,530.14 us	0.84	0.07	32.0667	0.0667	3400.0000	3333.3333	800.0000	216953.08 KB	1.19
EachChunkSeparatelyThenCombineArrayBuilders	StructRecord	2500000	45,426.26 us	904.293 us	2,166.627 us	45,419.99 us	1.06	0.07	16.9167	-	4583.3333	4500.0000	1166.6667	228075.05 KB	1.25
GroupByInPlaceViaSortAndParallelSegmentation	StructRecord	2500000	103,691.41 us	1,217.204 us	1,079.020 us	103,827.09 us	2.46	0.14	30.2000	-	19000.0000	-	-	244161.75 KB	1.34
SortThenCreateGroups	StructRecord	2500000	91,213.97 us	1,823.729 us	2,027.070 us	91,652.52 us	2.17	0.12	-	-	333.3333	333.3333	333.3333	48837.41 KB	0.27
GroupByInPlaceViaSort	StructRecord	2500000	100,719.91 us	1,843.694 us	1,893.338 us	100,587.23 us	2.40	0.14	23.0000	-	19000.0000	-	-	244162.33 KB	1.34
FullyOnParallelFor	StructRecord	2500000	25,495.58 us	503.003 us	1,093.487 us	25,357.96 us	0.60	0.04	33.2500	0.0313	4687.5000	4062.5000	1343.7500	157515.61 KB	0.87
CountByThenAssign	StructRecord	2500000	56,053.18 us	1,090.336 us	1,492.465 us	55,971.84 us	1.33	0.07	51.3000	-	13300.0000	500.0000	500.0000	195359.31 KB	1.07
ConcurrentMultiDictionairy	StructRecord	2500000	52,668.53 us	1,041.496 us	1,878.031 us	52,364.62 us	1.24	0.07	33.9000	0.1000	19400.0000	7300.0000	2000.0000	305667.22 KB	1.68
SortByForReference	StructRecord	25000000	2,351,806.25 us	35,022.826 us	32,760.374 us	2,351,706.60 us	9.06	0.26	-	-	-	-	-	585938.04 KB	0.22
ArrayGroupBy	StructRecord	25000000	450,170.88 us	8,940.527 us	9,937.372 us	453,347.10 us	1.73	0.05	-	-	1000.0000	1000.0000	1000.0000	1701357.91 KB	0.63
PLINQDefault	StructRecord	25000000	260,563.92 us	5,183.680 us	6,740.248 us	261,579.40 us	1.00	0.00	15.0000	12.0000	3000.0000	2000.0000	1000.0000	2683902.65 KB	1.00
EachChunkSeparatelyThenMerge	StructRecord	25000000	132,646.36 us	2,627.391 us	6,591.610 us	131,395.10 us	0.50	0.03	33.7500	-	3250.0000	3000.0000	750.0000	1560284.26 KB	0.58
EachChunkSeparatelyThenCombineArrayBuilders	StructRecord	25000000	175,806.91 us	3,501.767 us	7,686.464 us	174,434.13 us	0.67	0.03	17.0000	-	3333.3333	3000.0000	1000.0000	1824184.33 KB	0.68
GroupByInPlaceViaSortAndParallelSegmentation	StructRecord	25000000	1,042,473.76 us	20,116.113 us	23,165.746 us	1,040,516.30 us	4.00	0.14	39.0000	-	191000.0000	-	-	2441429.22 KB	0.91
SortThenCreateGroups	StructRecord	25000000	993,415.19 us	17,578.828 us	13,724.393 us	994,472.35 us	3.81	0.12	-	-	-	-	-	488290.84 KB	0.18
GroupByInPlaceViaSort	StructRecord	25000000	1,024,796.18 us	19,337.125 us	25,814.506 us	1,023,253.00 us	3.94	0.13	24.0000	-	191000.0000	-	-	2441428.21 KB	0.91
FullyOnParallelFor	StructRecord	25000000	161,913.25 us	3,226.153 us	4,626.852 us	162,039.39 us	0.62	0.03	35.2500	-	4500.0000	3750.0000	1500.0000	1624547.79 KB	0.61
CountByThenAssign	StructRecord	25000000	467,014.02 us	8,266.653 us	7,732.632 us	467,222.20 us	1.80	0.07	71.0000	-	128000.0000	-	-	1953147.88 KB	0.73
ConcurrentMultiDictionairy	StructRecord	25000000	298,155.50 us	5,123.819 us	4,792.823 us	296,976.25 us	1.15	0.04	36.0000	-	135000.0000	10000.0000	2500.0000	3214718.71 KB	1.20
SortByForReference	ReferenceRecord	4000	204.26 us	4.023 us	4.633 us	203.94 us	0.83	0.02	-	-	4.8828	0.2441	-	62.55 KB	0.08
ArrayGroupBy	ReferenceRecord	4000	51.78 us	1.034 us	1.699 us	52.23 us	0.21	0.01	-	-	10.1929	1.8921	-	125.26 KB	0.16
PLINQDefault	ReferenceRecord	4000	247.80 us	3.303 us	3.090 us	247.74 us	1.00	0.00	15.0000	11.4233	63.9648	41.0156	-	773.76 KB	1.00
EachChunkSeparatelyThenMerge	ReferenceRecord	4000	109.82 us	2.196 us	5.218 us	107.46 us	0.44	0.02	11.9973	0.0029	48.9502	28.4424	-	554.64 KB	0.72
EachChunkSeparatelyThenCombineArrayBuilders	ReferenceRecord	4000	217.00 us	4.247 us	5.954 us	214.73 us	0.88	0.03	5.5830	-	64.2090	35.8887	-	755.44 KB	0.98
GroupByInPlaceViaSortAndParallelSegmentation	ReferenceRecord	4000	218.13 us	1.536 us	1.437 us	218.43 us	0.88	0.01	13.8711	0.0005	34.1797	2.1973	-	418.83 KB	0.54
SortThenCreateGroups	ReferenceRecord	4000	127.26 us	2.498 us	3.503 us	128.75 us	0.51	0.01	-	-	4.8828	0.4883	-	61.03 KB	0.08
GroupByInPlaceViaSort	ReferenceRecord	4000	212.67 us	1.647 us	1.541 us	212.82 us	0.86	0.01	12.6609	0.0017	33.9355	2.1973	-	415.49 KB	0.54
FullyOnParallelFor	ReferenceRecord	4000	241.76 us	2.695 us	2.520 us	241.30 us	0.98	0.02	11.2432	0.0088	25.3906	24.9023	3.9063	305.94 KB	0.40
CountByThenAssign	ReferenceRecord	4000	101.80 us	0.608 us	0.539 us	101.60 us	0.41	0.01	37.0566	0.0433	27.0996	2.0752	-	329.94 KB	0.43
ConcurrentMultiDictionairy	ReferenceRecord	4000	1,941.97 us	38.291 us	73.773 us	1,940.40 us	8.05	0.31	27.4648	14.3086	87.8906	85.9375	27.3438	1070.21 KB	1.38
SortByForReference	ReferenceRecord	50000	4,264.17 us	83.506 us	99.408 us	4,255.76 us	5.04	0.16	-	-	242.1875	242.1875	242.1875	781.38 KB	0.25
ArrayGroupBy	ReferenceRecord	50000	606.51 us	11.923 us	19.921 us	605.46 us	0.73	0.03	-	-	118.1641	60.5469	-	1456.63 KB	0.46
PLINQDefault	ReferenceRecord	50000	845.74 us	13.877 us	12.302 us	842.95 us	1.00	0.00	15.0000	11.4229	302.7344	231.4453	-	3153.13 KB	1.00
EachChunkSeparatelyThenMerge	ReferenceRecord	50000	563.23 us	11.258 us	8.789 us	563.36 us	0.67	0.01	18.3857	0.0127	321.2891	287.1094	-	3773.92 KB	1.20
EachChunkSeparatelyThenCombineArrayBuilders	ReferenceRecord	50000	789.58 us	7.002 us	6.207 us	790.30 us	0.93	0.02	8.1240	-	341.7969	290.0391	-	4136.34 KB	1.31
GroupByInPlaceViaSortAndParallelSegmentation	ReferenceRecord	50000	2,709.13 us	43.395 us	40.592 us	2,701.99 us	3.20	0.06	18.3359	0.0078	394.5313	62.5000	62.5000	4911.85 KB	1.56
SortThenCreateGroups	ReferenceRecord	50000	2,448.40 us	48.833 us	61.759 us	2,464.13 us	2.90	0.08	-	-	179.6875	179.6875	179.6875	600.15 KB	0.19
GroupByInPlaceViaSort	ReferenceRecord	50000	2,596.90 us	16.191 us	15.145 us	2,600.54 us	3.07	0.05	16.9180	0.0078	394.5313	62.5000	62.5000	4908.44 KB	1.56
FullyOnParallelFor	ReferenceRecord	50000	1,178.91 us	23.243 us	38.834 us	1,174.29 us	1.39	0.06	17.2578	2.1777	171.8750	167.9688	33.2031	1961.88 KB	0.62
CountByThenAssign	ReferenceRecord	50000	834.37 us	5.530 us	4.902 us	832.71 us	0.99	0.02	45.1113	0.2070	299.8047	50.7813	-	3565.4 KB	1.13
ConcurrentMultiDictionairy	ReferenceRecord	50000	8,698.99 us	172.120 us	169.045 us	8,673.17 us	10.29	0.30	33.0469	19.9375	421.8750	171.8750	46.8750	4588.27 KB	1.46
SortByForReference	ReferenceRecord	100000	9,470.64 us	181.410 us	208.912 us	9,496.19 us	4.31	0.13	-	-	484.3750	484.3750	484.3750	1562.71 KB	0.24
ArrayGroupBy	ReferenceRecord	100000	1,270.70 us	25.314 us	49.374 us	1,279.81 us	0.58	0.03	-	-	234.3750	169.9219	-	2874.26 KB	0.43
PLINQDefault	ReferenceRecord	100000	2,203.17 us	41.530 us	58.219 us	2,207.53 us	1.00	0.00	15.0000	11.0117	734.3750	636.7188	-	6645.73 KB	1.00
EachChunkSeparatelyThenMerge	ReferenceRecord	100000	7,818.32 us	59.613 us	55.762 us	7,840.36 us	3.55	0.10	12.7422	0.0078	773.4375	773.4375	500.0000	5767.98 KB	0.87
EachChunkSeparatelyThenCombineArrayBuilders	ReferenceRecord	100000	7,828.13 us	59.294 us	55.464 us	7,849.83 us	3.55	0.09	7.0078	-	820.3125	820.3125	507.8125	6495.77 KB	0.98
GroupByInPlaceViaSortAndParallelSegmentation	ReferenceRecord	100000	5,789.14 us	114.804 us	171.833 us	5,776.25 us	2.63	0.11	21.4844	0.0078	867.1875	109.3750	109.3750	9798.69 KB	1.47
SortThenCreateGroups	ReferenceRecord	100000	5,050.16 us	53.140 us	49.707 us	5,043.84 us	2.29	0.07	-	-	289.0625	289.0625	289.0625	1186.12 KB	0.18
GroupByInPlaceViaSort	ReferenceRecord	100000	5,715.70 us	96.587 us	85.622 us	5,728.81 us	2.60	0.07	19.5625	0.0156	875.0000	117.1875	117.1875	9796.78 KB	1.47
FullyOnParallelFor	ReferenceRecord	100000	2,427.00 us	48.527 us	91.146 us	2,423.34 us	1.11	0.06	18.2422	1.8203	371.0938	316.4063	62.5000	3566.9 KB	0.54
CountByThenAssign	ReferenceRecord	100000	1,747.19 us	15.304 us	14.315 us	1,745.05 us	0.79	0.02	45.2188	0.1270	597.6563	89.8438	-	7080.92 KB	1.07
ConcurrentMultiDictionairy	ReferenceRecord	100000	17,957.19 us	338.057 us	347.160 us	17,794.89 us	8.16	0.27	32.3438	14.2188	843.7500	375.0000	93.7500	9032.12 KB	1.36
SortByForReference	ReferenceRecord	500000	51,071.36 us	959.013 us	984.836 us	50,980.00 us	1.46	0.06	-	-	300.0000	300.0000	300.0000	7812.68 KB	0.28
ArrayGroupBy	ReferenceRecord	500000	7,585.85 us	151.184 us	280.229 us	7,577.83 us	0.22	0.01	-	-	984.3750	867.1875	-	12149.26 KB	0.43
PLINQDefault	ReferenceRecord	500000	34,764.75 us	688.029 us	1,341.948 us	34,689.98 us	1.00	0.00	15.0000	8.6250	3687.5000	3625.0000	812.5000	28300.55 KB	1.00
EachChunkSeparatelyThenMerge	ReferenceRecord	500000	18,770.70 us	568.575 us	1,676.457 us	19,016.67 us	0.54	0.05	20.9375	-	1437.5000	1375.0000	500.0000	25954.92 KB	0.92
EachChunkSeparatelyThenCombineArrayBuilders	ReferenceRecord	500000	24,604.30 us	689.938 us	2,034.298 us	24,569.50 us	0.71	0.06	13.0625	-	1937.5000	1812.5000	843.7500	28724.02 KB	1.01
GroupByInPlaceViaSortAndParallelSegmentation	ReferenceRecord	500000	24,173.86 us	405.893 us	359.814 us	24,155.61 us	0.69	0.03	25.2500	-	3937.5000	125.0000	125.0000	48859.07 KB	1.73
SortThenCreateGroups	ReferenceRecord	500000	30,134.98 us	582.896 us	572.481 us	30,035.98 us	0.86	0.03	-	-	312.5000	312.5000	312.5000	5873.64 KB	0.21
GroupByInPlaceViaSort	ReferenceRecord	500000	24,149.03 us	433.996 us	622.425 us	24,189.89 us	0.69	0.03	22.0313	-	3937.5000	125.0000	125.0000	48855.62 KB	1.73
FullyOnParallelFor	ReferenceRecord	500000	14,822.86 us	289.980 us	551.717 us	14,956.39 us	0.43	0.02	26.7500	1.7188	1843.7500	1125.0000	218.7500	15874.08 KB	0.56
CountByThenAssign	ReferenceRecord	500000	8,208.37 us	63.109 us	52.699 us	8,213.22 us	0.24	0.01	57.7031	0.0313	2953.1250	390.6250	-	35206.88 KB	1.24
ConcurrentMultiDictionairy	ReferenceRecord	500000	81,454.74 us	989.458 us	925.539 us	81,272.40 us	2.33	0.11	36.4286	10.0000	4142.8571	1714.2857	142.8571	46994.63 KB	1.66
SortByForReference	ReferenceRecord	2500000	271,461.72 us	5,343.932 us	5,248.456 us	271,384.60 us	2.21	0.06	-	-	-	-	-	39062.79 KB	0.26
ArrayGroupBy	ReferenceRecord	2500000	63,282.39 us	1,254.560 us	2,417.112 us	63,486.42 us	0.51	0.02	-	-	1888.8889	1777.7778	555.5556	85126.87 KB	0.57
PLINQDefault	ReferenceRecord	2500000	122,988.68 us	2,347.214 us	3,052.041 us	123,359.00 us	1.00	0.00	15.0000	6.5000	6500.0000	5500.0000	500.0000	150479.22 KB	1.00
EachChunkSeparatelyThenMerge	ReferenceRecord	2500000	62,152.33 us	2,031.523 us	5,989.990 us	61,050.96 us	0.52	0.05	35.2000	-	3400.0000	3300.0000	400.0000	110613.75 KB	0.74
EachChunkSeparatelyThenCombineArrayBuilders	ReferenceRecord	2500000	87,541.83 us	1,726.963 us	3,790.726 us	86,664.39 us	0.72	0.04	17.0000	-	4833.3333	4666.6667	833.3333	124249.04 KB	0.83
GroupByInPlaceViaSortAndParallelSegmentation	ReferenceRecord	2500000	114,620.26 us	2,281.932 us	5,971.419 us	115,332.95 us	0.93	0.05	30.0000	-	19000.0000	-	-	244171.89 KB	1.62
SortThenCreateGroups	ReferenceRecord	2500000	179,258.72 us	3,505.852 us	5,138.833 us	179,141.83 us	1.46	0.06	-	-	333.3333	333.3333	333.3333	29311.3 KB	0.19
GroupByInPlaceViaSort	ReferenceRecord	2500000	118,517.69 us	2,317.810 us	3,094.210 us	118,988.53 us	0.96	0.04	22.0000	-	19000.0000	-	-	244167.15 KB	1.62
FullyOnParallelFor	ReferenceRecord	2500000	79,939.56 us	1,580.008 us	3,963.931 us	80,132.96 us	0.64	0.04	45.1429	0.1429	6428.5714	5571.4286	285.7143	81774.01 KB	0.54
CountByThenAssign	ReferenceRecord	2500000	44,223.60 us	831.096 us	736.745 us	44,191.25 us	0.36	0.01	56.4167	0.0833	13000.0000	250.0000	250.0000	175842.09 KB	1.17
ConcurrentMultiDictionairy	ReferenceRecord	2500000	371,662.08 us	3,782.205 us	3,158.312 us	372,758.60 us	3.01	0.06	34.0000	-	18000.0000	7000.0000	-	235291.02 KB	1.56
SortByForReference	ReferenceRecord	25000000	3,078,500.79 us	32,580.386 us	28,881.663 us	3,079,307.80 us	2.99	0.07	-	-	-	-	-	390625.54 KB	0.31
ArrayGroupBy	ReferenceRecord	25000000	912,032.69 us	15,826.505 us	14,804.122 us	918,280.90 us	0.88	0.03	-	-	2000.0000	1000.0000	1000.0000	719670.33 KB	0.58
PLINQDefault	ReferenceRecord	25000000	1,031,171.82 us	20,039.431 us	28,739.954 us	1,024,426.80 us	1.00	0.00	15.0000	10.0000	7000.0000	6000.0000	1000.0000	1243882.6 KB	1.00
EachChunkSeparatelyThenMerge	ReferenceRecord	25000000	499,331.39 us	9,248.607 us	9,083.369 us	499,709.20 us	0.48	0.01	48.0000	-	9000.0000	8000.0000	1000.0000	1278411.73 KB	1.03
EachChunkSeparatelyThenCombineArrayBuilders	ReferenceRecord	25000000	646,197.00 us	12,286.715 us	14,149.400 us	646,899.35 us	0.63	0.02	32.0000	-	17000.0000	16000.0000	1000.0000	1380103.44 KB	1.11
GroupByInPlaceViaSortAndParallelSegmentation	ReferenceRecord	25000000	1,126,593.89 us	22,284.720 us	23,844.401 us	1,128,595.10 us	1.09	0.04	39.0000	-	191000.0000	-	-	2441439.05 KB	1.96
SortThenCreateGroups	ReferenceRecord	25000000	1,917,150.48 us	26,685.519 us	24,961.651 us	1,916,236.60 us	1.86	0.05	-	-	-	-	-	292983.4 KB	0.24
GroupByInPlaceViaSort	ReferenceRecord	25000000	1,162,343.91 us	22,973.376 us	30,668.798 us	1,168,378.10 us	1.13	0.05	39.0000	-	191000.0000	-	-	2441434.67 KB	1.96
FullyOnParallelFor	ReferenceRecord	25000000	742,134.70 us	17,477.832 us	50,706.359 us	741,581.65 us	0.71	0.09	74.5000	-	44500.0000	43500.0000	500.0000	736524.55 KB	0.59
CountByThenAssign	ReferenceRecord	25000000	359,754.09 us	7,029.645 us	6,575.534 us	357,133.10 us	0.35	0.01	67.0000	-	128000.0000	-	-	1757864.48 KB	1.41
ConcurrentMultiDictionairy	ReferenceRecord	25000000	4,100,085.11 us	72,558.068 us	67,870.861 us	4,131,925.10 us	3.97	0.15	596.0000	3.0000	175000.0000	69000.0000	-	2297156.24 KB	1.85
SortByForReference	ExpensiveProjection	4000	209.58 us	3.900 us	3.648 us	210.35 us	0.51	0.01	-	-	4.8828	0.2441	-	62.55 KB	0.06
ArrayGroupBy	ExpensiveProjection	4000	718.65 us	10.591 us	9.907 us	719.66 us	1.75	0.03	-	-	40.0391	6.8359	-	496.85 KB	0.47
PLINQDefault	ExpensiveProjection	4000	411.47 us	3.213 us	2.683 us	411.06 us	1.00	0.00	15.0000	12.0317	92.7734	70.8008	-	1067.75 KB	1.00
EachChunkSeparatelyThenMerge	ExpensiveProjection	4000	261.70 us	2.295 us	2.147 us	262.02 us	0.64	0.01	16.7607	0.0073	63.9648	31.7383	-	714.26 KB	0.67
EachChunkSeparatelyThenCombineArrayBuilders	ExpensiveProjection	4000	327.25 us	2.123 us	1.985 us	327.42 us	0.80	0.01	11.4805	0.0054	69.3359	33.6914	-	786.38 KB	0.74
GroupByInPlaceViaSortAndParallelSegmentation	ExpensiveProjection	4000	399.82 us	2.529 us	2.112 us	400.20 us	0.97	0.01	19.6343	0.0083	63.9648	4.3945	-	783.44 KB	0.73
SortThenCreateGroups	ExpensiveProjection	4000	1,465.41 us	28.429 us	33.843 us	1,460.65 us	3.57	0.09	-	-	64.4531	9.7656	-	801.5 KB	0.75
GroupByInPlaceViaSort	ExpensiveProjection	4000	395.39 us	2.609 us	2.440 us	395.23 us	0.96	0.01	18.5459	0.0068	63.9648	4.3945	-	784.43 KB	0.73
FullyOnParallelFor	ExpensiveProjection	4000	412.99 us	5.410 us	4.518 us	413.02 us	1.00	0.01	17.9897	0.0195	51.2695	50.7813	7.8125	623.23 KB	0.58
CountByThenAssign	ExpensiveProjection	4000	370.23 us	2.319 us	2.056 us	369.92 us	0.90	0.01	38.0298	0.0146	85.9375	6.8359	-	1050.07 KB	0.98
ConcurrentMultiDictionairy	ExpensiveProjection	4000	1,036.27 us	20.167 us	20.710 us	1,037.36 us	2.51	0.06	29.3477	6.8242	76.1719	74.2188	17.5781	927.89 KB	0.87
SortByForReference	ExpensiveProjection	50000	4,296.81 us	85.802 us	84.269 us	4,318.05 us	1.46	0.03	-	-	242.1875	242.1875	242.1875	781.38 KB	0.10
ArrayGroupBy	ExpensiveProjection	50000	9,397.98 us	184.214 us	197.107 us	9,422.94 us	3.19	0.08	-	-	515.6250	218.7500	-	6345.16 KB	0.81
PLINQDefault	ExpensiveProjection	50000	2,944.30 us	26.493 us	24.781 us	2,942.98 us	1.00	0.00	15.0000	12.1367	695.3125	406.2500	-	7873.6 KB	1.00
EachChunkSeparatelyThenMerge	ExpensiveProjection	50000	2,661.04 us	23.454 us	21.939 us	2,658.85 us	0.90	0.01	20.5469	0.0156	628.9063	550.7813	-	7483.06 KB	0.95
EachChunkSeparatelyThenCombineArrayBuilders	ExpensiveProjection	50000	2,778.97 us	33.474 us	31.312 us	2,771.58 us	0.94	0.01	15.6133	0.0039	644.5313	507.8125	-	7757.27 KB	0.99
GroupByInPlaceViaSortAndParallelSegmentation	ExpensiveProjection	50000	4,577.04 us	48.030 us	44.927 us	4,578.36 us	1.55	0.02	23.8281	0.0078	765.6250	62.5000	62.5000	9562.8 KB	1.21
SortThenCreateGroups	ExpensiveProjection	50000	19,899.75 us	389.133 us	605.833 us	19,744.31 us	6.83	0.27	-	-	843.7500	156.2500	156.2500	9913.38 KB	1.26
GroupByInPlaceViaSort	ExpensiveProjection	50000	4,407.24 us	86.404 us	96.037 us	4,373.51 us	1.51	0.03	22.7891	0.0156	765.6250	62.5000	62.5000	9563.95 KB	1.21
FullyOnParallelFor	ExpensiveProjection	50000	3,125.61 us	47.855 us	44.764 us	3,130.66 us	1.06	0.02	21.3672	0.1875	582.0313	210.9375	70.3125	6436.04 KB	0.82
CountByThenAssign	ExpensiveProjection	50000	3,892.87 us	23.798 us	21.097 us	3,886.07 us	1.32	0.01	44.7148	0.0234	1058.5938	242.1875	-	12858.95 KB	1.63
ConcurrentMultiDictionairy	ExpensiveProjection	50000	9,247.46 us	143.676 us	134.395 us	9,249.83 us	3.14	0.05	30.0625	0.7344	812.5000	218.7500	62.5000	9340.74 KB	1.19
SortByForReference	ExpensiveProjection	100000	9,351.65 us	178.866 us	183.682 us	9,396.19 us	1.15	0.03	-	-	484.3750	484.3750	484.3750	1562.71 KB	0.10
ArrayGroupBy	ExpensiveProjection	100000	18,742.63 us	369.028 us	439.301 us	18,903.02 us	2.31	0.11	-	-	1000.0000	687.5000	31.2500	12676.31 KB	0.82
PLINQDefault	ExpensiveProjection	100000	8,146.42 us	162.338 us	242.980 us	8,169.84 us	1.00	0.00	15.0000	9.1875	1468.7500	984.3750	93.7500	15513.37 KB	1.00
EachChunkSeparatelyThenMerge	ExpensiveProjection	100000	9,231.62 us	182.520 us	396.782 us	9,303.62 us	1.12	0.06	19.1563	0.0313	1531.2500	1390.6250	515.6250	14721.35 KB	0.95
EachChunkSeparatelyThenCombineArrayBuilders	ExpensiveProjection	100000	10,236.62 us	202.357 us	468.994 us	10,303.18 us	1.26	0.06	16.4063	-	1562.5000	1312.5000	515.6250	15230.92 KB	0.98
GroupByInPlaceViaSortAndParallelSegmentation	ExpensiveProjection	100000	9,448.75 us	179.984 us	227.623 us	9,423.73 us	1.17	0.04	24.6563	-	1640.6250	140.6250	125.0000	19109 KB	1.23
SortThenCreateGroups	ExpensiveProjection	100000	40,596.06 us	715.348 us	669.137 us	40,506.05 us	5.02	0.19	-	-	1769.2308	307.6923	307.6923	19818.69 KB	1.28
GroupByInPlaceViaSort	ExpensiveProjection	100000	9,098.01 us	177.573 us	190.001 us	9,145.09 us	1.12	0.05	23.4688	0.0469	1640.6250	140.6250	125.0000	19110.02 KB	1.23
FullyOnParallelFor	ExpensiveProjection	100000	6,682.14 us	130.418 us	133.929 us	6,697.31 us	0.83	0.03	24.1953	0.1406	1187.5000	390.6250	109.3750	12791.54 KB	0.82
CountByThenAssign	ExpensiveProjection	100000	7,956.80 us	40.123 us	37.531 us	7,955.15 us	0.98	0.04	49.4375	0.0156	2125.0000	843.7500	-	25693.51 KB	1.66
ConcurrentMultiDictionairy	ExpensiveProjection	100000	17,632.53 us	287.872 us	269.276 us	17,608.94 us	2.18	0.10	32.3125	0.9375	1687.5000	468.7500	125.0000	18725.83 KB	1.21
SortByForReference	ExpensiveProjection	500000	48,938.36 us	888.233 us	830.853 us	49,143.65 us	1.06	0.03	-	-	272.7273	272.7273	272.7273	7812.67 KB	0.10
ArrayGroupBy	ExpensiveProjection	500000	102,377.59 us	2,027.727 us	2,335.134 us	101,585.95 us	2.23	0.07	-	-	4800.0000	1600.0000	400.0000	63880.79 KB	0.83
PLINQDefault	ExpensiveProjection	500000	46,096.60 us	908.945 us	1,213.415 us	46,188.84 us	1.00	0.00	15.0000	8.7273	6727.2727	2909.0909	636.3636	77161.86 KB	1.00
EachChunkSeparatelyThenMerge	ExpensiveProjection	500000	38,158.74 us	625.565 us	585.154 us	38,180.30 us	0.83	0.03	23.1429	-	6142.8571	2500.0000	857.1429	81031.78 KB	1.05
EachChunkSeparatelyThenCombineArrayBuilders	ExpensiveProjection	500000	37,537.14 us	745.756 us	1,069.541 us	37,673.69 us	0.81	0.03	17.0000	-	6142.8571	2714.2857	785.7143	82197.17 KB	1.07
GroupByInPlaceViaSortAndParallelSegmentation	ExpensiveProjection	500000	39,943.49 us	431.278 us	382.317 us	39,943.13 us	0.87	0.03	27.1538	0.0769	7923.0769	76.9231	76.9231	98566.37 KB	1.28
SortThenCreateGroups	ExpensiveProjection	500000	233,864.16 us	4,616.199 us	4,939.281 us	235,568.13 us	5.08	0.18	-	-	8333.3333	333.3333	333.3333	105301.08 KB	1.36
GroupByInPlaceViaSort	ExpensiveProjection	500000	40,189.55 us	456.169 us	380.922 us	40,292.71 us	0.87	0.03	24.0000	0.0769	7923.0769	76.9231	76.9231	98567.07 KB	1.28
FullyOnParallelFor	ExpensiveProjection	500000	28,199.21 us	319.681 us	299.030 us	28,183.58 us	0.61	0.02	37.4063	0.7500	5437.5000	1562.5000	125.0000	65366.47 KB	0.85
CountByThenAssign	ExpensiveProjection	500000	39,374.21 us	368.556 us	326.716 us	39,355.13 us	0.86	0.03	58.3077	-	10923.0769	384.6154	153.8462	134616.81 KB	1.74
ConcurrentMultiDictionairy	ExpensiveProjection	500000	88,204.91 us	824.345 us	730.761 us	88,126.89 us	1.92	0.06	36.8333	2.1667	8000.0000	2166.6667	166.6667	96521.6 KB	1.25
SortByForReference	ExpensiveProjection	2500000	268,646.70 us	5,251.101 us	7,361.311 us	271,492.05 us	1.48	0.04	-	-	-	-	-	39062.79 KB	0.11
ArrayGroupBy	ExpensiveProjection	2500000	463,600.94 us	9,006.896 us	11,061.277 us	466,292.80 us	2.53	0.09	-	-	20000.0000	2000.0000	-	312221.98 KB	0.85
PLINQDefault	ExpensiveProjection	2500000	183,193.55 us	2,178.103 us	1,818.815 us	183,833.17 us	1.00	0.00	15.0000	8.3333	24666.6667	5333.3333	333.3333	369248.8 KB	1.00
EachChunkSeparatelyThenMerge	ExpensiveProjection	2500000	129,569.38 us	1,626.393 us	1,441.755 us	129,083.11 us	0.71	0.01	36.2500	-	23750.0000	4750.0000	750.0000	385060.28 KB	1.04
EachChunkSeparatelyThenCombineArrayBuilders	ExpensiveProjection	2500000	142,487.61 us	2,837.183 us	6,287.001 us	139,881.98 us	0.78	0.04	17.0000	-	24500.0000	5750.0000	750.0000	392931.23 KB	1.06
GroupByInPlaceViaSortAndParallelSegmentation	ExpensiveProjection	2500000	195,729.38 us	3,724.528 us	3,657.984 us	195,007.85 us	1.07	0.02	30.0000	-	39000.0000	-	-	495873.06 KB	1.34
SortThenCreateGroups	ExpensiveProjection	2500000	1,272,841.45 us	6,592.290 us	6,166.432 us	1,275,250.00 us	6.95	0.09	-	-	41000.0000	-	-	532726.87 KB	1.44
GroupByInPlaceViaSort	ExpensiveProjection	2500000	198,657.16 us	2,638.962 us	2,339.371 us	198,622.65 us	1.09	0.02	30.0000	-	39500.0000	-	-	495873.55 KB	1.34
FullyOnParallelFor	ExpensiveProjection	2500000	140,602.04 us	3,300.819 us	9,628.645 us	138,843.39 us	0.77	0.06	33.5000	1.5000	25000.0000	6000.0000	250.0000	318095.33 KB	0.86
CountByThenAssign	ExpensiveProjection	2500000	189,873.64 us	1,871.314 us	1,562.632 us	189,826.90 us	1.04	0.01	53.0000	-	54000.0000	-	-	679228.72 KB	1.84
ConcurrentMultiDictionairy	ExpensiveProjection	2500000	410,102.01 us	4,027.915 us	3,363.491 us	410,733.40 us	2.24	0.03	44.0000	-	38000.0000	10000.0000	-	487151.42 KB	1.32
SortByForReference	ExpensiveProjection	25000000	2,997,750.83 us	56,927.447 us	58,460.297 us	3,008,641.60 us	1.57	0.08	-	-	-	-	-	390625.54 KB	0.10
ArrayGroupBy	ExpensiveProjection	25000000	5,030,319.23 us	92,134.717 us	86,182.872 us	5,052,374.30 us	2.65	0.16	-	-	207000.0000	3000.0000	1000.0000	3374839.84 KB	0.87
PLINQDefault	ExpensiveProjection	25000000	1,873,301.92 us	37,215.978 us	109,148.023 us	1,797,427.90 us	1.00	0.00	15.0000	6.0000	211000.0000	10000.0000	1000.0000	3866182.14 KB	1.00
EachChunkSeparatelyThenMerge	ExpensiveProjection	25000000	1,110,510.76 us	22,164.254 us	26,384.968 us	1,103,372.20 us	0.58	0.04	48.0000	-	210000.0000	7000.0000	1000.0000	3747248.24 KB	0.97
EachChunkSeparatelyThenCombineArrayBuilders	ExpensiveProjection	25000000	1,155,910.47 us	22,774.438 us	21,303.224 us	1,163,524.90 us	0.61	0.03	32.0000	-	210000.0000	7000.0000	1000.0000	3861399.96 KB	1.00
GroupByInPlaceViaSortAndParallelSegmentation	ExpensiveProjection	25000000	2,208,790.38 us	43,675.815 us	53,637.823 us	2,219,717.05 us	1.16	0.08	55.0000	-	398000.0000	-	-	4965574.49 KB	1.28
SortThenCreateGroups	ExpensiveProjection	25000000	12,744,664.90 us	201,867.060 us	188,826.573 us	12,785,177.20 us	6.70	0.37	-	-	412000.0000	1000.0000	-	5341263.98 KB	1.38
GroupByInPlaceViaSort	ExpensiveProjection	25000000	2,024,106.49 us	40,403.654 us	35,816.787 us	2,021,519.00 us	1.07	0.07	39.0000	-	398000.0000	-	-	4965572.68 KB	1.28
FullyOnParallelFor	ExpensiveProjection	25000000	1,216,934.09 us	29,873.159 us	88,081.683 us	1,234,085.95 us	0.65	0.06	164.0000	-	247000.0000	58000.0000	-	3285411.7 KB	0.85
CountByThenAssign	ExpensiveProjection	25000000	1,940,828.65 us	19,745.722 us	18,470.160 us	1,941,092.50 us	1.02	0.06	296.0000	1.0000	541000.0000	-	-	6806150.68 KB	1.76
ConcurrentMultiDictionairy	ExpensiveProjection	25000000	4,473,405.91 us	44,335.237 us	41,471.208 us	4,467,218.20 us	2.35	0.13	374.0000	2.0000	354000.0000	35000.0000	-	4811046.5 KB	1.24
SortByForReference	ManyResultingBuckets	4000	217.52 us	4.342 us	6.227 us	218.85 us	0.50	0.02	-	-	4.8828	0.2441	-	62.55 KB	0.03
ArrayGroupBy	ManyResultingBuckets	4000	489.35 us	9.744 us	20.338 us	486.20 us	1.13	0.06	-	-	60.5469	30.2734	30.2734	757.57 KB	0.41
PLINQDefault	ManyResultingBuckets	4000	437.56 us	8.382 us	8.968 us	436.61 us	1.00	0.00	15.0000	11.3765	156.7383	130.3711	-	1851.98 KB	1.00
EachChunkSeparatelyThenMerge	ManyResultingBuckets	4000	1,382.23 us	27.582 us	59.961 us	1,396.25 us	3.18	0.15	8.4004	0.0020	140.6250	115.2344	54.6875	1648.91 KB	0.89
EachChunkSeparatelyThenCombineArrayBuilders	ManyResultingBuckets	4000	678.00 us	12.545 us	12.320 us	680.64 us	1.55	0.05	3.5557	0.0020	85.9375	84.9609	42.9688	1041.73 KB	0.56
GroupByInPlaceViaSortAndParallelSegmentation	ManyResultingBuckets	4000	234.22 us	1.678 us	1.488 us	234.73 us	0.54	0.01	16.2087	0.0032	54.6875	12.9395	-	661.8 KB	0.36
SortThenCreateGroups	ManyResultingBuckets	4000	254.54 us	5.011 us	10.679 us	255.68 us	0.59	0.02	-	-	21.4844	8.3008	-	265.92 KB	0.14
GroupByInPlaceViaSort	ManyResultingBuckets	4000	235.95 us	1.623 us	1.518 us	235.96 us	0.54	0.01	11.7544	0.0012	50.5371	9.5215	-	620.14 KB	0.33
FullyOnParallelFor	ManyResultingBuckets	4000	1,594.99 us	34.203 us	100.849 us	1,589.11 us	3.68	0.20	8.2324	0.0156	140.6250	111.3281	39.0625	1547.48 KB	0.84
CountByThenAssign	ManyResultingBuckets	4000	1,181.89 us	20.707 us	19.370 us	1,178.50 us	2.71	0.08	32.4668	44.9688	119.1406	58.5938	29.2969	1247.57 KB	0.67
ConcurrentMultiDictionairy	ManyResultingBuckets	4000	16,409.28 us	626.472 us	1,847.166 us	16,462.58 us	33.02	2.00	97.3125	383.0313	343.7500	328.1250	78.1250	3307.49 KB	1.79
SortByForReference	ManyResultingBuckets	50000	4,323.66 us	86.321 us	123.799 us	4,311.16 us	0.44	0.02	-	-	242.1875	242.1875	242.1875	781.38 KB	0.08
ArrayGroupBy	ManyResultingBuckets	50000	7,815.43 us	149.187 us	418.335 us	7,826.07 us	0.82	0.04	-	-	484.3750	484.3750	234.3750	4143.5 KB	0.42
PLINQDefault	ManyResultingBuckets	50000	9,725.80 us	189.298 us	321.443 us	9,700.45 us	1.00	0.00	15.0000	9.4375	921.8750	718.7500	218.7500	9848.29 KB	1.00
EachChunkSeparatelyThenMerge	ManyResultingBuckets	50000	16,434.29 us	339.831 us	996.665 us	16,202.25 us	1.70	0.12	28.6563	-	1187.5000	1156.2500	531.2500	11996.65 KB	1.22
EachChunkSeparatelyThenCombineArrayBuilders	ManyResultingBuckets	50000	19,402.20 us	377.509 us	541.411 us	19,315.28 us	1.99	0.07	8.0000	0.0313	1031.2500	1000.0000	343.7500	10293.62 KB	1.05
GroupByInPlaceViaSortAndParallelSegmentation	ManyResultingBuckets	50000	4,578.72 us	46.423 us	43.424 us	4,570.87 us	0.46	0.01	19.3203	-	562.5000	210.9375	140.6250	6227.15 KB	0.63
SortThenCreateGroups	ManyResultingBuckets	50000	4,481.36 us	60.414 us	56.511 us	4,492.53 us	0.45	0.01	-	-	367.1875	343.7500	312.5000	1869.03 KB	0.19
GroupByInPlaceViaSort	ManyResultingBuckets	50000	4,569.64 us	53.122 us	49.691 us	4,549.02 us	0.46	0.01	14.3125	0.0078	546.8750	281.2500	218.7500	6176.58 KB	0.63
FullyOnParallelFor	ManyResultingBuckets	50000	21,538.60 us	415.879 us	510.737 us	21,537.74 us	2.20	0.09	30.8438	1.5313	1437.5000	1312.5000	656.2500	12761.17 KB	1.30
CountByThenAssign	ManyResultingBuckets	50000	12,311.47 us	198.026 us	185.234 us	12,283.57 us	1.25	0.03	44.1250	66.2656	796.8750	765.6250	390.6250	7730.05 KB	0.78
ConcurrentMultiDictionairy	ManyResultingBuckets	50000	96,663.90 us	2,319.988 us	6,767.515 us	95,831.44 us	9.67	0.75	58.1429	525.7143	2428.5714	2285.7143	285.7143	27156.02 KB	2.76
SortByForReference	ManyResultingBuckets	100000	9,272.27 us	183.455 us	280.155 us	9,173.25 us	0.51	0.03	-	-	484.3750	484.3750	484.3750	1562.71 KB	0.11
ArrayGroupBy	ManyResultingBuckets	100000	14,464.41 us	283.810 us	278.739 us	14,492.67 us	0.80	0.04	-	-	906.2500	890.6250	500.0000	6873.69 KB	0.48
PLINQDefault	ManyResultingBuckets	100000	17,878.36 us	357.216 us	827.903 us	17,801.10 us	1.00	0.00	15.0000	9.5313	1593.7500	1437.5000	343.7500	14417.79 KB	1.00
EachChunkSeparatelyThenMerge	ManyResultingBuckets	100000	35,416.29 us	695.147 us	1,235.623 us	35,324.24 us	1.97	0.13	30.8667	-	1933.3333	1866.6667	800.0000	18579.4 KB	1.29
EachChunkSeparatelyThenCombineArrayBuilders	ManyResultingBuckets	100000	48,959.29 us	957.973 us	1,845.689 us	48,963.96 us	2.73	0.18	11.7273	-	2181.8182	2090.9091	1000.0000	18726.58 KB	1.30
GroupByInPlaceViaSortAndParallelSegmentation	ManyResultingBuckets	100000	9,032.65 us	26.017 us	23.063 us	9,031.60 us	0.50	0.02	23.4219	-	1062.5000	484.3750	187.5000	11348.06 KB	0.79
SortThenCreateGroups	ManyResultingBuckets	100000	9,015.27 us	176.234 us	258.321 us	9,002.91 us	0.50	0.03	-	-	390.6250	375.0000	328.1250	2574.3 KB	0.18
GroupByInPlaceViaSort	ManyResultingBuckets	100000	9,473.95 us	186.365 us	311.375 us	9,483.14 us	0.52	0.03	19.4375	0.0469	1078.1250	640.6250	250.0000	11189.58 KB	0.78
FullyOnParallelFor	ManyResultingBuckets	100000	39,650.04 us	788.461 us	1,714.049 us	39,312.36 us	2.22	0.15	33.3750	2.0000	2125.0000	2062.5000	937.5000	21134.92 KB	1.47
CountByThenAssign	ManyResultingBuckets	100000	18,758.78 us	359.455 us	413.949 us	18,790.91 us	1.04	0.06	39.8750	79.5313	1312.5000	1062.5000	500.0000	12628.72 KB	0.88
ConcurrentMultiDictionairy	ManyResultingBuckets	100000	154,551.84 us	3,208.832 us	9,461.315 us	154,452.66 us	8.61	0.62	37.7500	725.2500	3750.0000	3500.0000	250.0000	45524.88 KB	3.16
SortByForReference	ManyResultingBuckets	500000	49,168.76 us	966.751 us	1,290.585 us	49,477.68 us	0.69	0.03	-	-	300.0000	300.0000	300.0000	7812.68 KB	0.18
ArrayGroupBy	ManyResultingBuckets	500000	43,614.02 us	786.422 us	1,049.851 us	43,715.61 us	0.61	0.02	-	-	1818.1818	1727.2727	363.6364	20027.18 KB	0.47
PLINQDefault	ManyResultingBuckets	500000	71,258.53 us	1,403.369 us	2,383.028 us	71,046.03 us	1.00	0.00	15.0000	7.2857	4714.2857	3714.2857	857.1429	42472.37 KB	1.00
EachChunkSeparatelyThenMerge	ManyResultingBuckets	500000	130,573.47 us	2,602.268 us	3,732.096 us	130,647.11 us	1.84	0.09	32.5000	-	4000.0000	3750.0000	1000.0000	59236.23 KB	1.39
EachChunkSeparatelyThenCombineArrayBuilders	ManyResultingBuckets	500000	282,532.25 us	5,571.107 us	9,460.163 us	281,784.37 us	3.97	0.19	17.3333	-	5666.6667	5333.3333	1333.3333	74998.8 KB	1.77
GroupByInPlaceViaSortAndParallelSegmentation	ManyResultingBuckets	500000	27,240.25 us	414.664 us	387.877 us	27,148.64 us	0.38	0.01	26.6563	0.0313	4093.7500	1125.0000	156.2500	50456.7 KB	1.19
SortThenCreateGroups	ManyResultingBuckets	500000	46,405.25 us	922.110 us	986.647 us	46,235.38 us	0.65	0.02	-	-	363.6364	363.6364	363.6364	7301.88 KB	0.17
GroupByInPlaceViaSort	ManyResultingBuckets	500000	27,400.85 us	413.360 us	386.658 us	27,310.90 us	0.38	0.01	22.2500	-	4062.5000	1125.0000	156.2500	50286.55 KB	1.18
FullyOnParallelFor	ManyResultingBuckets	500000	152,930.40 us	3,049.511 us	6,432.453 us	153,400.55 us	2.14	0.12	40.0000	1.5000	3750.0000	3500.0000	500.0000	57234.91 KB	1.35
CountByThenAssign	ManyResultingBuckets	500000	33,409.96 us	651.836 us	995.422 us	33,180.81 us	0.47	0.02	45.3750	71.6250	3437.5000	1687.5000	312.5000	40858.77 KB	0.96
ConcurrentMultiDictionairy	ManyResultingBuckets	500000	422,734.35 us	18,453.539 us	54,410.677 us	418,555.10 us	5.63	0.52	40.0000	1300.0000	12000.0000	11000.0000	1000.0000	142425.91 KB	3.35
SortByForReference	ManyResultingBuckets	2500000	276,605.11 us	5,446.831 us	7,082.419 us	276,659.92 us	1.33	0.04	-	-	-	-	-	39062.79 KB	0.25
ArrayGroupBy	ManyResultingBuckets	2500000	187,510.02 us	3,728.342 us	5,804.580 us	186,835.07 us	0.91	0.03	-	-	7000.0000	6666.6667	666.6667	79757.21 KB	0.50
PLINQDefault	ManyResultingBuckets	2500000	208,429.78 us	3,766.635 us	3,523.312 us	207,556.75 us	1.00	0.00	15.0000	7.5000	11500.0000	9000.0000	500.0000	158116.1 KB	1.00
EachChunkSeparatelyThenMerge	ManyResultingBuckets	2500000	418,457.62 us	8,135.007 us	9,042.038 us	418,361.40 us	2.00	0.06	49.0000	-	10000.0000	9000.0000	1000.0000	187254.15 KB	1.18
EachChunkSeparatelyThenCombineArrayBuilders	ManyResultingBuckets	2500000	738,894.85 us	14,535.547 us	23,054.918 us	734,851.90 us	3.53	0.10	32.0000	-	13000.0000	12000.0000	1000.0000	229297.99 KB	1.45
GroupByInPlaceViaSortAndParallelSegmentation	ManyResultingBuckets	2500000	111,870.45 us	2,230.046 us	5,796.187 us	111,739.40 us	0.54	0.03	28.0000	-	19000.0000	-	-	245769.18 KB	1.55
SortThenCreateGroups	ManyResultingBuckets	2500000	260,211.30 us	5,100.230 us	7,633.784 us	260,603.25 us	1.25	0.05	-	-	-	-	-	30738.85 KB	0.19
GroupByInPlaceViaSort	ManyResultingBuckets	2500000	117,797.81 us	2,338.502 us	5,033.873 us	117,776.80 us	0.57	0.02	23.0000	-	19000.0000	-	-	245595.61 KB	1.55
FullyOnParallelFor	ManyResultingBuckets	2500000	407,246.46 us	10,275.007 us	28,980.838 us	411,318.35 us	1.79	0.09	36.0000	-	11000.0000	10000.0000	1000.0000	153837.35 KB	0.97
CountByThenAssign	ManyResultingBuckets	2500000	87,655.64 us	1,517.490 us	1,419.461 us	87,502.34 us	0.42	0.01	64.1429	110.0000	15000.0000	3000.0000	285.7143	181477.1 KB	1.15
ConcurrentMultiDictionairy	ManyResultingBuckets	2500000	1,783,034.74 us	164,670.654 us	485,535.140 us	1,742,423.10 us	5.54	0.53	858.0000	2418.0000	45000.0000	41000.0000	1000.0000	534701.16 KB	3.38
SortByForReference	ManyResultingBuckets	25000000	3,165,567.18 us	28,724.983 us	26,869.367 us	3,167,435.80 us	3.20	0.06	-	-	-	-	-	390625.54 KB	0.30
ArrayGroupBy	ManyResultingBuckets	25000000	2,342,519.71 us	37,115.338 us	34,717.710 us	2,339,611.10 us	2.36	0.05	-	-	63000.0000	62000.0000	1000.0000	762988.84 KB	0.58
PLINQDefault	ManyResultingBuckets	25000000	991,286.74 us	19,557.646 us	20,084.263 us	991,492.00 us	1.00	0.00	15.0000	11.0000	82000.0000	58000.0000	-	1305578.7 KB	1.00
EachChunkSeparatelyThenMerge	ManyResultingBuckets	25000000	2,211,705.93 us	30,225.523 us	28,272.973 us	2,204,742.70 us	2.23	0.05	54.0000	-	65000.0000	64000.0000	1000.0000	1421367.41 KB	1.09
EachChunkSeparatelyThenCombineArrayBuilders	ManyResultingBuckets	25000000	2,853,982.79 us	29,340.233 us	27,444.872 us	2,841,294.80 us	2.88	0.06	32.0000	-	70000.0000	69000.0000	1000.0000	1561055.71 KB	1.20
GroupByInPlaceViaSortAndParallelSegmentation	ManyResultingBuckets	25000000	1,143,657.21 us	22,344.792 us	29,054.541 us	1,141,554.25 us	1.15	0.04	39.0000	-	191000.0000	-	-	2443036.38 KB	1.87
SortThenCreateGroups	ManyResultingBuckets	25000000	2,881,786.34 us	49,664.039 us	48,776.727 us	2,876,170.25 us	2.90	0.08	-	-	-	-	-	294410.97 KB	0.23
GroupByInPlaceViaSort	ManyResultingBuckets	25000000	1,206,239.95 us	23,248.514 us	21,746.674 us	1,208,476.70 us	1.22	0.03	24.0000	-	191000.0000	-	-	2442861.04 KB	1.87
FullyOnParallelFor	ManyResultingBuckets	25000000	5,703,665.16 us	113,812.038 us	283,431.469 us	5,674,074.70 us	6.00	0.28	411.0000	1.0000	115000.0000	114000.0000	1000.0000	1742138.93 KB	1.33
CountByThenAssign	ManyResultingBuckets	25000000	676,135.88 us	9,115.317 us	8,080.491 us	675,813.50 us	0.68	0.02	128.0000	28.0000	148000.0000	20000.0000	-	1763502.91 KB	1.35
ConcurrentMultiDictionairy	ManyResultingBuckets	25000000	9,851,121.86 us	455,921.009 us	1,344,293.383 us	10,031,112.80 us	8.22	0.58	1779.0000	4826.0000	253000.0000	166000.0000	1000.0000	3005849.7 KB	2.30
SortByForReference	Struc(...)ckets [23]	4000	156.29 us	3.105 us	3.322 us	157.47 us	0.38	0.01	-	-	7.5684	-	-	93.8 KB	0.04
ArrayGroupBy	Struc(...)ckets [23]	4000	675.91 us	11.710 us	13.940 us	672.06 us	1.65	0.04	-	-	88.8672	82.0313	31.2500	991.9 KB	0.40
PLINQDefault	Struc(...)ckets [23]	4000	410.19 us	7.980 us	8.195 us	407.14 us	1.00	0.00	15.0000	11.3901	212.8906	186.0352	-	2500.14 KB	1.00
EachChunkSeparatelyThenMerge	Struc(...)ckets [23]	4000	1,254.34 us	21.726 us	19.260 us	1,248.43 us	3.05	0.08	8.5996	0.0020	162.1094	125.0000	44.9219	1826.31 KB	0.73
EachChunkSeparatelyThenCombineArrayBuilders	Struc(...)ckets [23]	4000	457.25 us	9.089 us	9.725 us	457.98 us	1.12	0.03	4.9487	-	86.9141	86.4258	43.4570	1120.3 KB	0.45
GroupByInPlaceViaSortAndParallelSegmentation	Struc(...)ckets [23]	4000	229.99 us	2.819 us	2.499 us	228.90 us	0.56	0.01	16.0964	0.0017	57.6172	19.0430	-	690.55 KB	0.28
SortThenCreateGroups	Struc(...)ckets [23]	4000	73.33 us	0.790 us	0.660 us	73.47 us	0.18	0.00	-	-	26.1230	11.4746	-	321.83 KB	0.13
GroupByInPlaceViaSort	Struc(...)ckets [23]	4000	231.71 us	0.991 us	0.879 us	231.67 us	0.56	0.01	10.9568	0.0005	52.4902	13.4277	-	644.71 KB	0.26
FullyOnParallelFor	Struc(...)ckets [23]	4000	1,513.22 us	33.324 us	98.256 us	1,525.62 us	3.71	0.27	7.4941	0.0137	164.0625	128.9063	37.1094	1713.68 KB	0.69
CountByThenAssign	Struc(...)ckets [23]	4000	1,078.49 us	7.886 us	6.991 us	1,078.74 us	2.62	0.06	36.3711	43.7109	119.1406	58.5938	29.2969	1390.43 KB	0.56
ConcurrentMultiDictionairy	Struc(...)ckets [23]	4000	11,889.37 us	311.969 us	919.849 us	11,913.07 us	27.57	2.51	64.6094	109.7188	484.3750	468.7500	156.2500	4078.77 KB	1.63
SortByForReference	Struc(...)ckets [23]	50000	3,109.46 us	18.931 us	17.708 us	3,111.95 us	1.17	0.02	-	-	277.3438	277.3438	277.3438	1172.01 KB	0.11
ArrayGroupBy	Struc(...)ckets [23]	50000	4,266.62 us	85.103 us	129.961 us	4,249.71 us	1.63	0.06	-	-	539.0625	531.2500	195.3125	4983.08 KB	0.48
PLINQDefault	Struc(...)ckets [23]	50000	2,653.17 us	49.701 us	46.490 us	2,640.54 us	1.00	0.00	15.0000	10.7383	917.9688	886.7188	-	10466.46 KB	1.00
EachChunkSeparatelyThenMerge	Struc(...)ckets [23]	50000	9,624.02 us	192.339 us	438.053 us	9,587.71 us	3.65	0.17	16.7656	0.0156	1046.8750	1000.0000	359.3750	10520.5 KB	1.01
EachChunkSeparatelyThenCombineArrayBuilders	Struc(...)ckets [23]	50000	9,877.60 us	196.551 us	410.275 us	9,784.19 us	3.72	0.14	6.3750	0.0156	859.3750	640.6250	296.8750	10446.13 KB	1.00
GroupByInPlaceViaSortAndParallelSegmentation	Struc(...)ckets [23]	50000	2,567.17 us	51.235 us	82.735 us	2,550.64 us	0.97	0.03	18.4961	0.0117	507.8125	140.6250	58.5938	5705.4 KB	0.55
SortThenCreateGroups	Struc(...)ckets [23]	50000	1,632.65 us	13.373 us	12.509 us	1,635.67 us	0.62	0.01	-	-	349.6094	349.6094	302.7344	1693.75 KB	0.16
GroupByInPlaceViaSort	Struc(...)ckets [23]	50000	4,193.62 us	82.143 us	94.596 us	4,243.07 us	1.58	0.05	12.7734	-	515.6250	250.0000	93.7500	5612.86 KB	0.54
FullyOnParallelFor	Struc(...)ckets [23]	50000	13,944.12 us	276.231 us	576.597 us	13,986.74 us	5.31	0.33	20.9844	0.8438	1328.1250	1281.2500	625.0000	11560.07 KB	1.10
CountByThenAssign	Struc(...)ckets [23]	50000	6,561.43 us	17.190 us	14.355 us	6,565.14 us	2.47	0.05	39.9531	45.3984	703.1250	695.3125	281.2500	6847.47 KB	0.65
ConcurrentMultiDictionairy	Struc(...)ckets [23]	50000	77,000.25 us	1,724.476 us	5,084.655 us	77,224.95 us	28.39	1.57	39.2857	211.8571	3428.5714	3285.7143	428.5714	36069.12 KB	3.45
SortByForReference	Struc(...)ckets [23]	100000	6,431.78 us	29.665 us	27.749 us	6,432.44 us	0.74	0.03	-	-	367.1875	367.1875	367.1875	2343.91 KB	0.13
ArrayGroupBy	Struc(...)ckets [23]	100000	6,988.28 us	56.575 us	50.152 us	6,967.86 us	0.80	0.03	-	-	843.7500	656.2500	218.7500	8498.57 KB	0.48
PLINQDefault	Struc(...)ckets [23]	100000	8,684.29 us	172.613 us	472.524 us	8,630.29 us	1.00	0.00	15.0000	9.0000	1734.3750	1671.8750	500.0000	17754.99 KB	1.00
EachChunkSeparatelyThenMerge	Struc(...)ckets [23]	100000	25,460.40 us	479.951 us	827.892 us	25,444.15 us	2.95	0.18	24.9063	0.0313	1843.7500	1812.5000	843.7500	17585.29 KB	0.99
EachChunkSeparatelyThenCombineArrayBuilders	Struc(...)ckets [23]	100000	32,694.30 us	647.650 us	1,008.313 us	32,895.88 us	3.77	0.20	10.6875	-	2187.5000	2125.0000	937.5000	20578.68 KB	1.16
GroupByInPlaceViaSortAndParallelSegmentation	Struc(...)ckets [23]	100000	4,779.55 us	91.305 us	85.406 us	4,776.56 us	0.55	0.02	18.5625	0.0078	945.3125	179.6875	109.3750	10587.86 KB	0.60
SortThenCreateGroups	Struc(...)ckets [23]	100000	3,373.09 us	14.102 us	11.776 us	3,373.15 us	0.39	0.01	-	-	539.0625	535.1563	492.1875	2670.28 KB	0.15
GroupByInPlaceViaSort	Struc(...)ckets [23]	100000	6,444.61 us	111.157 us	98.538 us	6,441.16 us	0.74	0.03	15.4531	0.0078	968.7500	445.3125	156.2500	10494.53 KB	0.59
FullyOnParallelFor	Struc(...)ckets [23]	100000	26,639.94 us	522.746 us	873.391 us	26,593.72 us	3.09	0.22	30.0938	1.5938	1937.5000	1906.2500	781.2500	19502.12 KB	1.10
CountByThenAssign	Struc(...)ckets [23]	100000	9,294.65 us	185.779 us	375.283 us	9,230.81 us	1.08	0.08	42.0469	42.6719	1078.1250	718.7500	265.6250	10778 KB	0.61
ConcurrentMultiDictionairy	Struc(...)ckets [23]	100000	136,063.52 us	3,838.374 us	11,317.532 us	135,351.11 us	15.63	1.53	47.6000	453.8000	6200.0000	6000.0000	600.0000	67586.95 KB	3.81
SortByForReference	Struc(...)ckets [23]	500000	36,344.64 us	625.011 us	584.636 us	36,475.25 us	0.79	0.04	-	-	428.5714	428.5714	428.5714	11718.96 KB	0.20
ArrayGroupBy	Struc(...)ckets [23]	500000	22,406.67 us	348.241 us	325.744 us	22,476.13 us	0.49	0.02	-	-	3125.0000	2281.2500	750.0000	30217.48 KB	0.50
PLINQDefault	Struc(...)ckets [23]	500000	45,761.50 us	898.218 us	1,619.672 us	45,924.98 us	1.00	0.00	15.0000	7.9091	6545.4545	5545.4545	1181.8182	59950.22 KB	1.00
EachChunkSeparatelyThenMerge	Struc(...)ckets [23]	500000	63,097.27 us	1,258.202 us	2,102.174 us	63,033.33 us	1.38	0.07	33.7500	-	4375.0000	3875.0000	1000.0000	60759.25 KB	1.01
EachChunkSeparatelyThenCombineArrayBuilders	Struc(...)ckets [23]	500000	132,454.40 us	2,494.793 us	2,969.873 us	132,863.70 us	2.91	0.15	16.5000	-	6750.0000	6500.0000	1750.0000	80958.35 KB	1.35
GroupByInPlaceViaSortAndParallelSegmentation	Struc(...)ckets [23]	500000	20,897.87 us	252.922 us	236.583 us	20,986.01 us	0.45	0.02	26.5000	0.0313	4000.0000	218.7500	125.0000	49651.57 KB	0.83
SortThenCreateGroups	Struc(...)ckets [23]	500000	18,473.10 us	191.415 us	169.684 us	18,495.69 us	0.40	0.02	-	-	406.2500	375.0000	375.0000	10482.76 KB	0.17
GroupByInPlaceViaSort	Struc(...)ckets [23]	500000	22,400.15 us	430.361 us	402.559 us	22,384.83 us	0.49	0.02	23.0313	0.0313	4343.7500	1437.5000	468.7500	49558.29 KB	0.83
FullyOnParallelFor	Struc(...)ckets [23]	500000	79,957.80 us	1,590.709 us	4,077.596 us	79,951.57 us	1.75	0.11	39.0000	-	4571.4286	3571.4286	714.2857	61357.11 KB	1.02
CountByThenAssign	Struc(...)ckets [23]	500000	26,694.15 us	524.825 us	1,107.033 us	26,743.25 us	0.58	0.03	43.9688	33.4063	4281.2500	2406.2500	968.7500	42034.04 KB	0.70
ConcurrentMultiDictionairy	Struc(...)ckets [23]	500000	279,369.03 us	8,419.923 us	24,826.332 us	283,448.23 us	5.97	0.65	52.3333	781.6667	14000.0000	12666.6667	666.6667	160546.59 KB	2.68
SortByForReference	Struc(...)ckets [23]	2500000	212,070.21 us	4,227.567 us	5,191.832 us	212,199.82 us	2.19	0.09	-	-	333.3333	333.3333	333.3333	58594.07 KB	0.26
ArrayGroupBy	Struc(...)ckets [23]	2500000	99,900.66 us	1,975.617 us	4,808.925 us	98,102.46 us	1.05	0.05	-	-	12600.0000	12400.0000	2800.0000	121943.95 KB	0.54
PLINQDefault	Struc(...)ckets [23]	2500000	96,452.38 us	1,900.241 us	2,601.072 us	96,535.35 us	1.00	0.00	15.0000	6.6000	15800.0000	12000.0000	1600.0000	226854.78 KB	1.00
EachChunkSeparatelyThenMerge	Struc(...)ckets [23]	2500000	164,435.38 us	3,247.591 us	5,856.077 us	163,981.30 us	1.71	0.09	38.3333	-	11333.3333	11000.0000	1000.0000	193272.64 KB	0.85
EachChunkSeparatelyThenCombineArrayBuilders	Struc(...)ckets [23]	2500000	293,462.81 us	5,784.351 us	9,174.593 us	292,745.85 us	3.06	0.12	24.5000	-	15500.0000	15000.0000	2000.0000	238103.21 KB	1.05
GroupByInPlaceViaSortAndParallelSegmentation	Struc(...)ckets [23]	2500000	102,626.75 us	2,046.145 us	3,062.573 us	101,703.34 us	1.07	0.04	29.8000	-	19200.0000	-	-	244963.74 KB	1.08
SortThenCreateGroups	Struc(...)ckets [23]	2500000	95,254.72 us	1,862.656 us	1,912.811 us	95,446.03 us	0.98	0.03	-	-	500.0000	500.0000	500.0000	49545.37 KB	0.22
GroupByInPlaceViaSort	Struc(...)ckets [23]	2500000	100,262.22 us	1,984.975 us	3,528.291 us	99,991.40 us	1.04	0.05	22.5000	-	19000.0000	500.0000	-	244870.18 KB	1.08
FullyOnParallelFor	Struc(...)ckets [23]	2500000	250,829.26 us	11,616.978 us	34,252.922 us	253,591.08 us	2.20	0.20	54.5000	0.5000	17500.0000	17000.0000	1000.0000	217332.7 KB	0.96
CountByThenAssign	Struc(...)ckets [23]	2500000	67,866.82 us	1,351.960 us	1,556.919 us	67,480.14 us	0.70	0.02	61.6250	86.2500	17500.0000	5375.0000	1500.0000	198296.68 KB	0.87
ConcurrentMultiDictionairy	Struc(...)ckets [23]	2500000	432,869.62 us	21,616.617 us	63,737.084 us	431,566.92 us	4.35	0.73	38.0000	894.5000	28000.0000	19500.0000	1500.0000	318895.2 KB	1.41
SortByForReference	Struc(...)ckets [23]	25000000	2,369,664.14 us	26,242.656 us	23,263.431 us	2,366,456.75 us	2.87	0.09	-	-	-	-	-	585938.04 KB	0.24
ArrayGroupBy	Struc(...)ckets [23]	25000000	903,651.83 us	17,913.943 us	25,112.846 us	900,781.10 us	1.11	0.05	-	-	147000.0000	146000.0000	11000.0000	1674451.19 KB	0.68
PLINQDefault	Struc(...)ckets [23]	25000000	814,748.32 us	16,166.763 us	30,758.948 us	823,721.00 us	1.00	0.00	15.0000	9.0000	170000.0000	128000.0000	5000.0000	2471250.45 KB	1.00
EachChunkSeparatelyThenMerge	Struc(...)ckets [23]	25000000	1,045,369.19 us	18,408.851 us	17,219.650 us	1,047,006.70 us	1.27	0.05	45.0000	-	161000.0000	160000.0000	2000.0000	2026434.9 KB	0.82
EachChunkSeparatelyThenCombineArrayBuilders	Struc(...)ckets [23]	25000000	1,398,055.40 us	22,937.628 us	21,455.872 us	1,397,674.50 us	1.70	0.06	32.0000	-	172000.0000	171000.0000	3000.0000	2222751.55 KB	0.90
GroupByInPlaceViaSortAndParallelSegmentation	Struc(...)ckets [23]	25000000	996,791.05 us	18,276.950 us	17,096.270 us	1,000,643.10 us	1.21	0.04	53.0000	-	191000.0000	-	-	2442232.13 KB	0.99
SortThenCreateGroups	Struc(...)ckets [23]	25000000	991,035.05 us	14,724.958 us	13,773.735 us	992,973.70 us	1.21	0.04	-	-	-	-	-	488998.74 KB	0.20
GroupByInPlaceViaSort	Struc(...)ckets [23]	25000000	999,074.43 us	18,784.500 us	20,099.205 us	997,078.05 us	1.22	0.06	24.0000	-	191000.0000	-	-	2442136.58 KB	0.99
FullyOnParallelFor	Struc(...)ckets [23]	25000000	2,155,403.82 us	205,291.639 us	605,307.028 us	2,130,117.25 us	2.24	0.66	704.0000	13.0000	179000.0000	178000.0000	1000.0000	2503313.13 KB	1.01
CountByThenAssign	Struc(...)ckets [23]	25000000	462,063.22 us	9,112.563 us	14,972.203 us	462,565.00 us	0.57	0.03	111.0000	49.0000	169000.0000	41000.0000	3000.0000	1956288.58 KB	0.79
ConcurrentMultiDictionairy	Struc(...)ckets [23]	25000000	3,232,467.80 us	138,328.676 us	407,865.223 us	3,309,435.15 us	3.58	0.48	500.0000	2237.0000	270000.0000	168000.0000	2000.0000	3093646.78 KB	1.25