Compare commits

AST compact size (buildDeclTree)

Factor

compact size MiB

phase=buildDeclTree

*mean*	0.203
σ	0.000
min	0.203
max	0.203

AST compact size (macro expansion)

Factor

compact size MiB

phase=macro expansion

*mean*	5.301
σ	0.000
min	5.301
max	5.301

AST compact size (parser)

Factor

compact size MiB

phase=parser

*mean*	5.176
σ	0.000
min	5.176
max	5.176

AST compact size (processProdDef Decls)

Factor

compact size MiB

phase=processProdDef Decls

*mean*	5.676
σ	0.000
min	5.676
max	5.676

AST compact size (processProdDef)

Factor

compact size MiB

phase=processProdDef

*mean*	446.883-558.633=-111.750
σ	0.000
min	446.883-558.633=-111.750
max	446.883-558.633=-111.750

AST compact size (renaming)

Factor

compact size MiB

phase=renaming

*mean*	5.488
σ	0.000
min	5.488
max	5.488

AST compact size (type checker)

Factor

compact size MiB

phase=type checker

*mean*	6.645
σ	0.000
min	6.645
max	6.645

Aggregation: measureAggregations

Factor

allocated MiB

peak allocated MiB

time_s

cache=n

dps=1

iters=10

policies=100

*mean*	54.835-54.889=-0.054
σ	0.365-0.359=0.007
min	54.706-54.750=-0.045
max	55.875-55.910=-0.035

*mean*	418.000-418.700=-0.700
σ	0.000-0.483=-0.483
min	418.000
max	418.000-419.000=-1.000

*mean*	0.140-0.141=-0.001
σ	0.004-0.004=-0.000
min	0.137-0.138=-0.001
max	0.148-0.150=-0.001

cache=y

dps=1

iters=10

policies=100

*mean*	43.842-43.855=-0.013
σ	0.003-0.006=-0.003
min	43.835-43.846=-0.011
max	43.847-43.867=-0.020

*mean*	418.000-419.000=-1.000
σ	0.000
min	418.000-419.000=-1.000
max	418.000-419.000=-1.000

*mean*	0.120-0.121=-0.001
σ	0.005-0.005=-0.000
min	0.115-0.116=-0.002
max	0.129-0.130=-0.001

CSV - indexed operations

Factor

allocated MiB

peak allocated MiB

time (ms)

op=column_set() on indexed

*mean*	36.617-36.618=-0.001
σ	0.000-0.002=-0.002
min	36.617-36.616=0.001
max	36.618-36.620=-0.002

*mean*	4591.625-4042.375=549.250
σ	2249.892-2007.703=242.189
min	1485.000-1216.000=269.000
max	7386.000-7138.000=248.000

*mean*	114.937-13.513=101.425
σ	288.354-1.713=286.641
min	11.828-12.453=-0.625
max	828.559-17.706=810.853

op=column_set() on indexed, repeat

*mean*	36.617-36.618=-0.001
σ	0.000-0.002=-0.002
min	36.617-36.616=0.001
max	36.618-36.620=-0.003

*mean*	4591.625-4042.375=549.250
σ	2249.892-2007.703=242.189
min	1485.000-1216.000=269.000
max	7386.000-7138.000=248.000

*mean*	13.030-13.509=-0.479
σ	2.428-2.001=0.427
min	11.330-11.841=-0.511
max	18.631-18.158=0.474

op=table_records(), no indexes

*mean*	41.948-41.930=0.018
σ	0.002-0.001=0.000
min	41.946-41.929=0.018
max	41.950-41.932=0.018

*mean*	7386.000-7138.000=248.000
σ	0.000
min	7386.000-7138.000=248.000
max	7386.000-7138.000=248.000

*mean*	11.144-14.943=-3.799
σ	0.244-1.269=-1.025
min	10.846-11.835=-0.990
max	11.525-15.740=-4.215

op=table_records(), repeat

*mean*	41.933-41.929=0.004
σ	0.000-0.002=-0.002
min	41.933-41.927=0.005
max	41.934-41.932=0.001

*mean*	4182.500-4042.375=140.125
σ	1946.264-2007.703=-61.439
min	1485.000-1216.000=269.000
max	7386.000-7138.000=248.000

*mean*	12.024-14.435=-2.411
σ	1.752-1.850=-0.098
min	11.112-11.495=-0.383
max	16.308-16.105=0.203

op=vertical_lookup_list() on indexed, after table_records()

*mean*	27.655-27.654=0.001
σ	0.137-0.136=0.000
min	27.606-27.604=0.002
max	27.993-27.991=0.002

*mean*	4182.500-4042.375=140.125
σ	1946.264-2007.703=-61.439
min	1485.000-1216.000=269.000
max	7386.000-7138.000=248.000

*mean*	8.939-10.305=-1.365
σ	1.288-1.850=-0.562
min	8.053-9.013=-0.960
max	12.071-13.402=-1.331

op=vertical_lookup_list() on indexed, after table_records(), repeat

*mean*	26.406-26.401=0.005
σ	0.000-0.002=-0.002
min	26.406-26.400=0.006
max	26.406-26.404=0.002

*mean*	4182.500-4042.375=140.125
σ	1946.264-2007.703=-61.439
min	1485.000-1216.000=269.000
max	7386.000-7138.000=248.000

*mean*	6.696-7.568=-0.872
σ	1.133-1.952=-0.818
min	5.717-5.810=-0.093
max	9.395-10.695=-1.300

op=vertical_lookup_row_list() on 2 indexed

*mean*	25.681-25.668=0.013
σ	0.003-0.004=-0.001
min	25.680-25.665=0.014
max	25.688-25.678=0.010

*mean*	4591.625-4042.375=549.250
σ	2249.892-2007.703=242.189
min	1485.000-1216.000=269.000
max	7386.000-7138.000=248.000

*mean*	6.244-6.248=-0.004
σ	0.456-0.489=-0.033
min	5.935-5.956=-0.021
max	7.337-7.430=-0.093

op=vertical_lookup_row_list() on 3 (1 unindexed)

*mean*	25.984-25.970=0.015
σ	0.000-0.002=-0.001
min	25.984-25.968=0.016
max	25.985-25.972=0.013

*mean*	4591.625-4042.375=549.250
σ	2249.892-2007.703=242.189
min	1485.000-1216.000=269.000
max	7386.000-7138.000=248.000

*mean*	6.056-5.997=0.059
σ	0.551-0.530=0.020
min	5.688-5.476=0.212
max	7.391-7.255=0.136

CSV - loading a lazy table

Factor

allocated MiB

peak allocated MiB

time (ms)

op=load_product(), no indexes

*mean*	1021.627-1021.613=0.014
σ	0.002-0.002=0.000
min	1021.625-1021.612=0.013
max	1021.629-1021.616=0.013

*mean*	7386.000-7138.000=248.000
σ	0.000
min	7386.000-7138.000=248.000
max	7386.000-7138.000=248.000

*mean*	362.034-362.680=-0.646
σ	43.324-40.444=2.880
min	344.450-346.260=-1.810
max	469.155-462.662=6.493

op=load_product(), with indexes

*mean*	3495.878-7917.792=-4421.914
σ	0.469-0.469=-0.001
min	3495.713-7917.625=-4421.912
max	3497.038-7918.954=-4421.916

*mean*	3758.375-3274.875=483.500
σ	2300.951-1826.067=474.884
min	720.000-810.000=-90.000
max	7386.000-5625.000=1761.000

*mean*	1723.757-3822.094=-2098.337
σ	611.701-1216.754=-605.053
min	1394.931-3089.965=-1695.033
max	2975.665-6228.080=-3252.415

CSV - unindexed operations

Factor

allocated MiB

peak allocated MiB

time (ms)

op=column_set() on unindexed, dense

*mean*	62.077
σ	0.002
min	62.076
max	62.080

*mean*	4042.375
σ	2007.703
min	1216.000
max	7138.000

*mean*	89.943
σ	21.569
min	70.154
max	125.634

op=column_set() on unindexed, dense, minor warmup

*mean*	107.854
σ	0.000
min	107.853
max	107.855

*mean*	4411.500
σ	2219.313
min	1485.000
max	7386.000

*mean*	247.170
σ	318.899
min	123.643
max	1035.335

op=column_set() on unindexed, dense, repeat

*mean*	62.081
σ	0.000
min	62.081
max	62.082

*mean*	4411.500
σ	2219.313
min	1485.000
max	7386.000

*mean*	44.825
σ	7.450
min	40.444
max	63.028

op=vertical_lookup_list() on unindexed missing Int

*mean*	40.946
σ	0.002
min	40.945
max	40.950

*mean*	7138.000
σ	0.000
min	7138.000
max	7138.000

*mean*	84.760
σ	65.980
min	60.032
max	247.916

op=vertical_lookup_list() repeated on unindexed missing Int

*mean*	40.948
σ	0.002
min	40.947
max	40.950

*mean*	7386.000
σ	0.000
min	7386.000
max	7386.000

*mean*	22.609
σ	2.070
min	21.488
max	27.679

op=vertical_lookup_row_list() on unindexed small unique Int

*mean*	71.308-66.688=4.620
σ	0.002-0.002=-0.001
min	71.307-66.686=4.621
max	71.311-66.691=4.620

*mean*	7386.000-7138.000=248.000
σ	0.000
min	7386.000-7138.000=248.000
max	7386.000-7138.000=248.000

*mean*	220.672-213.180=7.492
σ	463.445-316.106=147.338
min	55.060-98.212=-43.152
max	1367.610-995.385=372.225

CSV - warmup

Factor

allocated MiB

peak allocated MiB

time (ms)

op=table_records()

*mean*	4646.851-14217.171=-9570.320
σ	0.014-4.303=-4.290
min	4646.845-14215.575=-9568.730
max	4646.884-14227.820=-9580.936

*mean*	4182.500-4042.375=140.125
σ	1946.264-2007.703=-61.439
min	1485.000-1216.000=269.000
max	7386.000-7138.000=248.000

*mean*	3273.001-7779.873=-4506.872
σ	741.343-1847.137=-1105.795
min	2508.135-5967.746=-3459.610
max	4490.800-10872.806=-6382.006

op=vertical_lookup_list() on indexed

*mean*	1973.851-13159.108=-11185.257
σ	0.002-0.002=0.000
min	1973.849-13159.106=-11185.256
max	1973.854-13159.110=-11185.256

*mean*	7386.000-7138.000=248.000
σ	0.000
min	7386.000-7138.000=248.000
max	7386.000-7138.000=248.000

*mean*	1048.030-5454.113=-4406.084
σ	199.087-1061.488=-862.401
min	920.638-4999.073=-4078.435
max	1490.188-8049.141=-6558.952

op=vertical_lookup_list() on unindexed missing Int, minor warmup

*mean*	905.105
σ	0.002
min	905.102
max	905.108

*mean*	7386.000
σ	0.000
min	7386.000
max	7386.000

*mean*	391.510
σ	7.462
min	379.071
max	405.699

CSV internal benchmark: pointedIndexFromKvs

Factor

allocated MiB

peak allocated MiB

time (ms)

op=pointedIndexFromKvs

rows=200000

*mean*	148.144-172.559=-24.414
σ	0.001
min	148.144-172.558=-24.414
max	148.148-172.562=-24.414

*mean*	476.875-478.000=-1.125
σ	0.354-0.000=0.354
min	476.000-478.000=-2.000
max	477.000-478.000=-1.000

*mean*	386.309-389.554=-3.245
σ	25.849-1.447=24.402
min	360.969-387.624=-26.655
max	426.852-391.881=34.971

op=pointedIndexFromKvs

rows=400000

*mean*	308.493-357.322=-48.828
σ	0.001
min	308.493-357.321=-48.828
max	308.497-357.325=-48.828

*mean*	564.750-560.000=4.750
σ	3.536-0.000=3.536
min	556.000-560.000=-4.000
max	566.000-560.000=6.000

*mean*	712.753-765.598=-52.845
σ	83.392-41.814=41.578
min	582.426-671.410=-88.983
max	814.817-813.176=1.641

Marine Hull: transactPolicy

Factor

allocated MiB

peak allocated MiB

time

datapoints=1

iterations=20

*mean*	963.972-1024.299=-60.327
σ	1.820-0.758=1.062
min	963.264-1023.827=-60.562
max	971.668-1027.432=-55.764

*mean*	1043.950-1053.650=-9.700
σ	309.546-311.569=-2.023
min	584.000-571.000=13.000
max	1500.000-1509.000=-9.000

*mean*	1.239-1.544=-0.305
σ	0.062-0.055=0.008
min	1.173-1.473=-0.300
max	1.411-1.683=-0.272

Parser: Comma Sep

Factor

allocated MiB

peak allocated MiB

time (ms)

name=ambiguous_item.art

*mean*	0.913-0.913=0.000
σ	0.020
min	0.903-0.903=0.000
max	0.949-0.949=0.000

*mean*	402.000
σ	0.000
min	402.000
max	402.000

*mean*	0.290-0.409=-0.118
σ	0.292-0.508=-0.216
min	0.135-0.147=-0.012
max	0.808-1.316=-0.508

name=error_case.art

*mean*	2.340-2.339=0.001
σ	0.012
min	2.334-2.333=0.001
max	2.362-2.361=0.001

*mean*	402.000
σ	0.000
min	402.000
max	402.000

*mean*	0.469-0.477=-0.008
σ	0.324-0.339=-0.015
min	0.314-0.314=-0.001
max	1.048-1.083=-0.034

name=heavy_item.art

*mean*	1.523-1.522=0.000
σ	0.002
min	1.521-1.521=0.000
max	1.525-1.525=0.000

*mean*	402.000
σ	0.000
min	402.000
max	402.000

*mean*	0.206-0.224=-0.018
σ	0.027-0.028=-0.001
min	0.188-0.206=-0.017
max	0.253-0.274=-0.021

name=nested_use.art

*mean*	2.358-2.357=0.001
σ	0.002
min	2.357-2.356=0.001
max	2.361-2.360=0.001

*mean*	402.000
σ	0.000
min	402.000
max	402.000

*mean*	0.327-0.336=-0.010
σ	0.015-0.023=-0.008
min	0.315-0.318=-0.003
max	0.352-0.376=-0.023

Parser: Real World

Factor

allocated MiB

peak allocated MiB

time (sec)

name=aon_gpf25_7k_loc.art

*mean*	964.971-964.840=0.130
σ	0.011
min	964.965-964.835=0.130
max	964.989-964.859=0.130

*mean*	431.400-437.000=-5.600
σ	0.894-6.595=-5.701
min	431.000
max	433.000-444.000=-11.000

*mean*	0.571-0.524=0.047
σ	0.036-0.062=-0.025
min	0.519-0.451=0.068
max	0.607-0.595=0.012

name=cdr_enhanced_4k_loc.art

*mean*	885.898-885.820=0.078
σ	0.002
min	885.897-885.819=0.078
max	885.901-885.823=0.078

*mean*	439.000-444.000=-5.000
σ	0.000
min	439.000-444.000=-5.000
max	439.000-444.000=-5.000

*mean*	0.441-0.478=-0.037
σ	0.054-0.038=0.016
min	0.378-0.424=-0.045
max	0.522-0.525=-0.003

Parser: Record Parsing

Factor

allocated MiB

peak allocated MiB

time (ms)

name=record_render_large_success.art

*mean*	7.710-7.709=0.001
σ	0.002
min	7.709-7.708=0.001
max	7.713-7.712=0.001

*mean*	439.000-444.000=-5.000
σ	0.000
min	439.000-444.000=-5.000
max	439.000-444.000=-5.000

*mean*	2.620-2.690=-0.070
σ	0.095-0.113=-0.018
min	2.424-2.518=-0.094
max	2.910-3.321=-0.410

name=record_render_large_syntax_err.art

*mean*	7.658-7.657=0.001
σ	0.002
min	7.657-7.656=0.001
max	7.661-7.660=0.001

*mean*	439.000-444.000=-5.000
σ	0.000
min	439.000-444.000=-5.000
max	439.000-444.000=-5.000

*mean*	2.574-2.651=-0.077
σ	0.074-0.085=-0.010
min	2.427-2.481=-0.054
max	2.867-2.939=-0.072

name=record_render_success.art

*mean*	2.290-2.289=0.000
σ	0.002
min	2.289-2.289=0.000
max	2.293-2.293=0.000

*mean*	439.000-444.000=-5.000
σ	0.000
min	439.000-444.000=-5.000
max	439.000-444.000=-5.000

*mean*	0.303-0.305=-0.003
σ	0.008-0.009=-0.001
min	0.288-0.290=-0.002
max	0.355-0.363=-0.008

name=record_render_syntax_err.art

*mean*	2.165-2.165=0.000
σ	0.002
min	2.164-2.164=0.000
max	2.168-2.168=0.000

*mean*	439.000-444.000=-5.000
σ	0.000
min	439.000-444.000=-5.000
max	439.000-444.000=-5.000

*mean*	0.290-0.293=-0.003
σ	0.007-0.007=0.000
min	0.278-0.282=-0.005
max	0.326-0.334=-0.008

Revision Creation

Factor

allocated MiB

peak allocated MiB

time_s

number of threads=8

revision count=1000

*mean*	11.621
σ	10.889
min	0.574
max	77.630

*mean*	466.441
σ	18.992
min	408.000
max	483.000

*mean*	0.027
σ	0.027
min	0.001
max	0.191

SoV import

Factor

allocated MiB

peak allocated MiB

time_s

iters=10

rows=1000

*mean*	278.677-298.698=-20.021
σ	1.114-0.986=0.128
min	278.187-298.339=-20.153
max	281.828-301.502=-19.675

*mean*	445.100-439.700=5.400
σ	17.760-14.659=3.101
min	415.000
max	466.000-465.000=1.000

*mean*	0.574-0.601=-0.027
σ	0.021-0.015=0.005
min	0.536-0.566=-0.030
max	0.610-0.620=-0.010

Timed compile per phase

Factor

allocated MiB

peak allocated MiB

time (ms)

phase=buildDeclTree

*mean*	173.738-236.678=-62.940
σ	0.000-0.000=0.000
min	173.738-236.678=-62.940
max	173.738-236.678=-62.940

*mean*	842.500-1049.500=-207.000
σ	0.535-24.042=-23.507
min	842.000-990.000=-148.000
max	843.000-1058.000=-215.000

*mean*	239.566-205.282=34.284
σ	15.086-3.109=11.977
min	216.319-200.431=15.888
max	251.899-209.551=42.348

phase=macro expansion

*mean*	6.133-6.130=0.004
σ	0.000
min	6.133-6.130=0.004
max	6.133-6.130=0.004

*mean*	842.375-1049.500=-207.125
σ	0.518-24.042=-23.524
min	842.000-990.000=-148.000
max	843.000-1058.000=-215.000

*mean*	9.524-9.388=0.136
σ	0.132-2.672=-2.540
min	9.356-6.305=3.051
max	9.728-13.156=-3.428

phase=parser

*mean*	1042.435-1042.361=0.074
σ	0.000
min	1042.435-1042.361=0.074
max	1042.435-1042.361=0.074

*mean*	842.375-1049.500=-207.125
σ	0.518-24.042=-23.524
min	842.000-990.000=-148.000
max	843.000-1058.000=-215.000

*mean*	598.325-511.004=87.321
σ	7.137-120.834=-113.697
min	588.791-378.060=210.731
max	608.362-768.149=-159.787

phase=processProdDef

*mean*	2243.976-4850.768=-2606.792
σ	0.000
min	2243.976-4850.768=-2606.792
max	2243.976-4850.768=-2606.792

*mean*	842.500-1058.000=-215.500
σ	0.535-0.000=0.535
min	842.000-1058.000=-216.000
max	843.000-1058.000=-215.000

*mean*	2608.063-4593.952=-1985.889
σ	468.800-550.722=-81.923
min	2032.189-3621.695=-1589.506
max	3212.052-5276.949=-2064.897

phase=renaming

*mean*	21.671-21.675=-0.004
σ	0.000
min	21.671-21.675=-0.004
max	21.671-21.675=-0.004

*mean*	842.375-1049.500=-207.125
σ	0.518-24.042=-23.524
min	842.000-990.000=-148.000
max	843.000-1058.000=-215.000

*mean*	40.477-35.806=4.671
σ	0.312-11.843=-11.531
min	40.056-20.273=19.783
max	41.155-49.392=-8.238

phase=type checker

*mean*	989.752-990.450=-0.698
σ	0.066-0.071=-0.005
min	989.654-990.344=-0.690
max	989.841-990.563=-0.722

*mean*	842.375-1049.500=-207.125
σ	0.518-24.042=-23.524
min	842.000-990.000=-148.000
max	843.000-1058.000=-215.000

*mean*	691.661-801.557=-109.896
σ	32.230-149.019=-116.789
min	668.733-648.900=19.832
max	764.826-993.901=-229.075

Workflow: transactPolicy

Factor

allocated MiB

peak allocated MiB

time

iters=5

new-facts=1

prior-facts=1

*mean*	282.396-293.822=-11.427
σ	0.036-0.038=-0.002
min	282.340-293.769=-11.429
max	282.427-293.862=-11.435

*mean*	441.200-444.000=-2.800
σ	1.643-0.000=1.643
min	440.000-444.000=-4.000
max	443.000-444.000=-1.000

*mean*	0.377-0.391=-0.014
σ	0.002-0.002=-0.000
min	0.375-0.388=-0.013
max	0.379-0.394=-0.015

iters=5

new-facts=1

prior-facts=6402

*mean*	1267.096-1320.177=-53.081
σ	0.087-0.103=-0.017
min	1267.009-1320.051=-53.042
max	1267.227-1320.334=-53.107

*mean*	1088.400-1097.400=-9.000
σ	174.043-186.567=-12.525
min	850.000-839.000=11.000
max	1294.000-1319.000=-25.000

*mean*	1.888-2.075=-0.187
σ	0.109-0.068=0.041
min	1.797-2.020=-0.223
max	2.067-2.189=-0.122

iters=5

new-facts=6402

prior-facts=1

*mean*	1506.074-1560.574=-54.500
σ	2.964-6.249=-3.285
min	1504.518-1557.522=-53.004
max	1511.363-1571.745=-60.382

*mean*	614.000-619.600=-5.600
σ	77.878-81.968=-4.090
min	494.000-495.000=-1.000
max	701.000-715.000=-14.000

*mean*	2.210-2.272=-0.062
σ	0.223-0.221=0.002
min	2.054-2.141=-0.087
max	2.598-2.665=-0.067

iters=5

new-facts=6402

prior-facts=6402

*mean*	1829.106-1882.181=-53.074
σ	0.030-0.055=-0.024
min	1829.056-1882.119=-53.063
max	1829.139-1882.241=-53.102

*mean*	1736.400-1725.800=10.600
σ	241.360-199.621=41.739
min	1428.000-1456.000=-28.000
max	2045.000-1915.000=130.000

*mean*	2.904-3.054=-0.149
σ	0.089-0.186=-0.097
min	2.797-2.831=-0.034
max	2.991-3.237=-0.246

newProductH/cdr_auton/broker

Factor

time_s

iterations=5

*mean*	1.757-1.648=0.110
σ	0.089-0.269=-0.180
min	1.645-1.289=0.357
max	1.846-1.870=-0.024

policy addition benchmark

Factor

allocated MiB

db queries

peak allocated MiB

time

policies=2

*mean*	397.698-452.084=-54.386
σ	518.052-582.724=-64.672
min	138.670-160.717=-22.046
max	1174.776-1326.170=-151.394

*mean*	97.750-102.250=-4.500
σ	7.500-8.500=-1.000
min	94.000-98.000=-4.000
max	109.000-115.000=-6.000

*mean*	447.000-441.000=6.000
σ	0.000
min	447.000-441.000=6.000
max	447.000-441.000=6.000

*mean*	0.499-0.549=-0.050
σ	0.531-0.533=-0.002
min	0.232-0.276=-0.044
max	1.296-1.348=-0.053

policies=20

*mean*	1386.840-1607.537=-220.697
σ	0.165-0.413=-0.248
min	1386.725-1607.255=-220.530
max	1387.085-1608.151=-221.066

*mean*	940.000-980.000=-40.000
σ	0.000
min	940.000-980.000=-40.000
max	940.000-980.000=-40.000

*mean*	447.000-444.750=2.250
σ	0.000-7.500=-7.500
min	447.000-441.000=6.000
max	447.000-456.000=-9.000

*mean*	2.325-2.692=-0.367
σ	0.017-0.022=-0.005
min	2.311-2.666=-0.355
max	2.349-2.715=-0.367

policies=200

*mean*	13876.893-16083.533=-2206.640
σ	0.079-0.135=-0.056
min	13876.812-16083.393=-2206.580
max	13877.002-16083.707=-2206.705

*mean*	9400.000-9800.000=-400.000
σ	0.000
min	9400.000-9800.000=-400.000
max	9400.000-9800.000=-400.000

*mean*	495.250-495.750=-0.500
σ	4.500-3.686=0.814
min	490.000-491.000=-1.000
max	501.000-500.000=1.000

*mean*	23.507-27.072=-3.564
σ	0.170-0.106=0.064
min	23.343-26.927=-3.583
max	23.738-27.151=-3.413