On Sat, Dec 20, 2014 at 02:24:43PM +1100, Graeme Gill <graeme@xxxxxxxxxxxxx> wrote: > Vallo Kallaste wrote: > > > Yes, that was my initial guess as well. Following archive contains 'dispread > > -Iw -D 6' log along with .ti1 and .ti3 files. Setting > > ARGYLL_MIN_DISPLAY_UPDATE_DELAY_MS=800 has effect, colprof reports peak > > error > > around 4. > > Hi, > the measured delay for your display is very short (23 msec). > What sort of display is it ? Dell 3008WFP. Here are two additional test runs by setting ARGYLL_MIN_DISPLAY_UPDATE_DELAY_MS in 50ms steps from 200 to 800. The following testset, interspersed with white patches, has measuring errors only in -Iw case. The stabilisation point seems to be around 700ms, that is how the colverify reference is measured: ARGYLL_MIN_DISPLAY_UPDATE_DELAY_MS=700 and without drift compensation. Needless to say I've run this and also different tests more than once with same results. Something in the -Iw behaviour is causing this. Setting large delay is only bandaid because without drift compensation the measured delay seems to work. Test script: -------------------------------------------------------------------- ./test.sh test-Iw "$(seq -s " " 200 50 800)" ./test.sh test-noIw "$(seq -s " " 200 50 800)" #! /bin/bash -Cue for ms in ${2} do date="$(date +%Y-%m-%dT%H%M)step${ms}" export ARGYLL_MIN_DISPLAY_UPDATE_DELAY_MS=${ms} dispread -Yp -yl -v2 -c1 -Iw -X i1D3_Dell_3008WFP.ccss ${1} #dispread -Yp -yl -v2 -c1 -X i1D3_Dell_3008WFP.ccss ${1} mv ${1}.ti3 ${1}.${date}.ti3 colverify -v2 ${1}.ti3.ref ${1}.${date}.ti3 2>&1 |tee ${1}.${date}.txt done Results: -------------------------------------------------------------------- $ grep 'Total errors:' test-noIw.2014-12-21T*.txt test-noIw.2014-12-21T1408step200.txt: Total errors: peak = 7.037054, avg = 1.492856 test-noIw.2014-12-21T1411step250.txt: Total errors: peak = 6.707876, avg = 1.522650 test-noIw.2014-12-21T1414step300.txt: Total errors: peak = 6.349113, avg = 1.544500 test-noIw.2014-12-21T1417step350.txt: Total errors: peak = 6.630734, avg = 1.564225 test-noIw.2014-12-21T1421step400.txt: Total errors: peak = 6.112620, avg = 1.612387 test-noIw.2014-12-21T1424step450.txt: Total errors: peak = 6.943990, avg = 1.666700 test-noIw.2014-12-21T1428step500.txt: Total errors: peak = 6.235714, avg = 1.491712 test-noIw.2014-12-21T1432step550.txt: Total errors: peak = 6.392355, avg = 1.416702 test-noIw.2014-12-21T1436step600.txt: Total errors: peak = 6.015822, avg = 1.489346 test-noIw.2014-12-21T1440step650.txt: Total errors: peak = 5.627549, avg = 1.519844 test-noIw.2014-12-21T1445step700.txt: Total errors: peak = 6.001815, avg = 1.468294 test-noIw.2014-12-21T1450step750.txt: Total errors: peak = 7.244912, avg = 1.774961 test-noIw.2014-12-21T1455step800.txt: Total errors: peak = 5.463481, avg = 1.593869 $ grep 'Total errors:' test-Iw.2014-12-21T*.txt test-Iw.2014-12-21T1501step200.txt: Total errors: peak = 13303.111169, avg = 54.828963 test-Iw.2014-12-21T1505step250.txt: Total errors: peak = 1404.592275, avg = 17.362389 test-Iw.2014-12-21T1508step300.txt: Total errors: peak = 687.033431, avg = 5.307529 test-Iw.2014-12-21T1511step350.txt: Total errors: peak = 9.578346, avg = 2.664425 test-Iw.2014-12-21T1515step400.txt: Total errors: peak = 9.292858, avg = 2.918289 test-Iw.2014-12-21T1518step450.txt: Total errors: peak = 496.063493, avg = 4.139868 test-Iw.2014-12-21T1522step500.txt: Total errors: peak = 1365.493849, avg = 9.714379 test-Iw.2014-12-21T1526step550.txt: Total errors: peak = 132261.618994, avg = 526.677736 test-Iw.2014-12-21T1530step600.txt: Total errors: peak = 1161005.745026, avg = 4834.284545 test-Iw.2014-12-21T1535step650.txt: Total errors: peak = 1621.333088, avg = 14.708973 test-Iw.2014-12-21T1539step700.txt: Total errors: peak = 8.212580, avg = 2.040059 test-Iw.2014-12-21T1544step750.txt: Total errors: peak = 8.362986, avg = 2.722833 test-Iw.2014-12-21T1550step800.txt: Total errors: peak = 7.027616, avg = 2.168870 Testset: -------------------------------------------------------------------- NUMBER_OF_SETS 270 BEGIN_DATA 1 100.000 100.000 100.000 95.1065 100.000 108.844 2 74.4926 10.8310 41.7710 25.0180 13.6797 15.8258 3 100.000 100.000 100.000 95.1065 100.000 108.844 4 77.9034 0.00000 100.000 42.0993 20.1239 96.2174 5 100.000 100.000 100.000 95.1065 100.000 108.844 6 53.6227 0.00000 79.1269 21.7000 10.4552 56.9312 7 100.000 100.000 100.000 95.1065 100.000 108.844 8 74.3930 58.1453 0.00000 32.4775 32.8530 5.49070 9 100.000 100.000 100.000 95.1065 100.000 108.844 10 87.3899 64.4799 12.7114 44.5642 43.0498 8.20505 11 100.000 100.000 100.000 95.1065 100.000 108.844 12 38.9539 68.7239 18.3274 21.8585 34.2927 8.96345 13 100.000 100.000 100.000 95.1065 100.000 108.844 14 16.4418 58.1390 58.0640 17.7641 24.6503 32.4536 15 100.000 100.000 100.000 95.1065 100.000 108.844 16 12.8306 62.4024 73.2310 22.7618 29.4460 51.7578 17 100.000 100.000 100.000 95.1065 100.000 108.844 18 54.5972 77.5280 100.000 49.3747 53.4463 102.266 19 100.000 100.000 100.000 95.1065 100.000 108.844 20 74.4926 10.8310 41.7710 25.0180 13.6797 15.8258 21 100.000 100.000 100.000 95.1065 100.000 108.844 22 77.9034 0.00000 100.000 42.0993 20.1239 96.2174 23 100.000 100.000 100.000 95.1065 100.000 108.844 24 53.6227 0.00000 79.1269 21.7000 10.4552 56.9312 25 100.000 100.000 100.000 95.1065 100.000 108.844 26 74.3930 58.1453 0.00000 32.4775 32.8530 5.49070 27 100.000 100.000 100.000 95.1065 100.000 108.844 28 87.3899 64.4799 12.7114 44.5642 43.0498 8.20505 29 100.000 100.000 100.000 95.1065 100.000 108.844 30 38.9539 68.7239 18.3274 21.8585 34.2927 8.96345 31 100.000 100.000 100.000 95.1065 100.000 108.844 32 16.4418 58.1390 58.0640 17.7641 24.6503 32.4536 33 100.000 100.000 100.000 95.1065 100.000 108.844 34 12.8306 62.4024 73.2310 22.7618 29.4460 51.7578 35 100.000 100.000 100.000 95.1065 100.000 108.844 36 54.5972 77.5280 100.000 49.3747 53.4463 102.266 37 100.000 100.000 100.000 95.1065 100.000 108.844 38 74.4926 10.8310 41.7710 25.0180 13.6797 15.8258 39 100.000 100.000 100.000 95.1065 100.000 108.844 40 77.9034 0.00000 100.000 42.0993 20.1239 96.2174 41 100.000 100.000 100.000 95.1065 100.000 108.844 42 53.6227 0.00000 79.1269 21.7000 10.4552 56.9312 43 100.000 100.000 100.000 95.1065 100.000 108.844 44 74.3930 58.1453 0.00000 32.4775 32.8530 5.49070 45 100.000 100.000 100.000 95.1065 100.000 108.844 46 87.3899 64.4799 12.7114 44.5642 43.0498 8.20505 47 100.000 100.000 100.000 95.1065 100.000 108.844 48 38.9539 68.7239 18.3274 21.8585 34.2927 8.96345 49 100.000 100.000 100.000 95.1065 100.000 108.844 50 16.4418 58.1390 58.0640 17.7641 24.6503 32.4536 51 100.000 100.000 100.000 95.1065 100.000 108.844 52 12.8306 62.4024 73.2310 22.7618 29.4460 51.7578 53 100.000 100.000 100.000 95.1065 100.000 108.844 54 54.5972 77.5280 100.000 49.3747 53.4463 102.266 55 100.000 100.000 100.000 95.1065 100.000 108.844 56 74.4926 10.8310 41.7710 25.0180 13.6797 15.8258 57 100.000 100.000 100.000 95.1065 100.000 108.844 58 77.9034 0.00000 100.000 42.0993 20.1239 96.2174 59 100.000 100.000 100.000 95.1065 100.000 108.844 60 53.6227 0.00000 79.1269 21.7000 10.4552 56.9312 61 100.000 100.000 100.000 95.1065 100.000 108.844 62 74.3930 58.1453 0.00000 32.4775 32.8530 5.49070 63 100.000 100.000 100.000 95.1065 100.000 108.844 64 87.3899 64.4799 12.7114 44.5642 43.0498 8.20505 65 100.000 100.000 100.000 95.1065 100.000 108.844 66 38.9539 68.7239 18.3274 21.8585 34.2927 8.96345 67 100.000 100.000 100.000 95.1065 100.000 108.844 68 16.4418 58.1390 58.0640 17.7641 24.6503 32.4536 69 100.000 100.000 100.000 95.1065 100.000 108.844 70 12.8306 62.4024 73.2310 22.7618 29.4460 51.7578 71 100.000 100.000 100.000 95.1065 100.000 108.844 72 54.5972 77.5280 100.000 49.3747 53.4463 102.266 73 100.000 100.000 100.000 95.1065 100.000 108.844 74 74.4926 10.8310 41.7710 25.0180 13.6797 15.8258 75 100.000 100.000 100.000 95.1065 100.000 108.844 76 77.9034 0.00000 100.000 42.0993 20.1239 96.2174 77 100.000 100.000 100.000 95.1065 100.000 108.844 78 53.6227 0.00000 79.1269 21.7000 10.4552 56.9312 79 100.000 100.000 100.000 95.1065 100.000 108.844 80 74.3930 58.1453 0.00000 32.4775 32.8530 5.49070 81 100.000 100.000 100.000 95.1065 100.000 108.844 82 87.3899 64.4799 12.7114 44.5642 43.0498 8.20505 83 100.000 100.000 100.000 95.1065 100.000 108.844 84 38.9539 68.7239 18.3274 21.8585 34.2927 8.96345 85 100.000 100.000 100.000 95.1065 100.000 108.844 86 16.4418 58.1390 58.0640 17.7641 24.6503 32.4536 87 100.000 100.000 100.000 95.1065 100.000 108.844 88 12.8306 62.4024 73.2310 22.7618 29.4460 51.7578 89 100.000 100.000 100.000 95.1065 100.000 108.844 90 54.5972 77.5280 100.000 49.3747 53.4463 102.266 91 100.000 100.000 100.000 95.1065 100.000 108.844 92 74.4926 10.8310 41.7710 25.0180 13.6797 15.8258 93 100.000 100.000 100.000 95.1065 100.000 108.844 94 77.9034 0.00000 100.000 42.0993 20.1239 96.2174 95 100.000 100.000 100.000 95.1065 100.000 108.844 96 53.6227 0.00000 79.1269 21.7000 10.4552 56.9312 97 100.000 100.000 100.000 95.1065 100.000 108.844 98 74.3930 58.1453 0.00000 32.4775 32.8530 5.49070 99 100.000 100.000 100.000 95.1065 100.000 108.844 100 87.3899 64.4799 12.7114 44.5642 43.0498 8.20505 101 100.000 100.000 100.000 95.1065 100.000 108.844 102 38.9539 68.7239 18.3274 21.8585 34.2927 8.96345 103 100.000 100.000 100.000 95.1065 100.000 108.844 104 16.4418 58.1390 58.0640 17.7641 24.6503 32.4536 105 100.000 100.000 100.000 95.1065 100.000 108.844 106 12.8306 62.4024 73.2310 22.7618 29.4460 51.7578 107 100.000 100.000 100.000 95.1065 100.000 108.844 108 54.5972 77.5280 100.000 49.3747 53.4463 102.266 109 100.000 100.000 100.000 95.1065 100.000 108.844 110 74.4926 10.8310 41.7710 25.0180 13.6797 15.8258 111 100.000 100.000 100.000 95.1065 100.000 108.844 112 77.9034 0.00000 100.000 42.0993 20.1239 96.2174 113 100.000 100.000 100.000 95.1065 100.000 108.844 114 53.6227 0.00000 79.1269 21.7000 10.4552 56.9312 115 100.000 100.000 100.000 95.1065 100.000 108.844 116 74.3930 58.1453 0.00000 32.4775 32.8530 5.49070 117 100.000 100.000 100.000 95.1065 100.000 108.844 118 87.3899 64.4799 12.7114 44.5642 43.0498 8.20505 119 100.000 100.000 100.000 95.1065 100.000 108.844 120 38.9539 68.7239 18.3274 21.8585 34.2927 8.96345 121 100.000 100.000 100.000 95.1065 100.000 108.844 122 16.4418 58.1390 58.0640 17.7641 24.6503 32.4536 123 100.000 100.000 100.000 95.1065 100.000 108.844 124 12.8306 62.4024 73.2310 22.7618 29.4460 51.7578 125 100.000 100.000 100.000 95.1065 100.000 108.844 126 54.5972 77.5280 100.000 49.3747 53.4463 102.266 127 100.000 100.000 100.000 95.1065 100.000 108.844 128 74.4926 10.8310 41.7710 25.0180 13.6797 15.8258 129 100.000 100.000 100.000 95.1065 100.000 108.844 130 77.9034 0.00000 100.000 42.0993 20.1239 96.2174 131 100.000 100.000 100.000 95.1065 100.000 108.844 132 53.6227 0.00000 79.1269 21.7000 10.4552 56.9312 133 100.000 100.000 100.000 95.1065 100.000 108.844 134 74.3930 58.1453 0.00000 32.4775 32.8530 5.49070 135 100.000 100.000 100.000 95.1065 100.000 108.844 136 87.3899 64.4799 12.7114 44.5642 43.0498 8.20505 137 100.000 100.000 100.000 95.1065 100.000 108.844 138 38.9539 68.7239 18.3274 21.8585 34.2927 8.96345 139 100.000 100.000 100.000 95.1065 100.000 108.844 140 16.4418 58.1390 58.0640 17.7641 24.6503 32.4536 141 100.000 100.000 100.000 95.1065 100.000 108.844 142 12.8306 62.4024 73.2310 22.7618 29.4460 51.7578 143 100.000 100.000 100.000 95.1065 100.000 108.844 144 54.5972 77.5280 100.000 49.3747 53.4463 102.266 145 100.000 100.000 100.000 95.1065 100.000 108.844 146 74.4926 10.8310 41.7710 25.0180 13.6797 15.8258 147 100.000 100.000 100.000 95.1065 100.000 108.844 148 77.9034 0.00000 100.000 42.0993 20.1239 96.2174 149 100.000 100.000 100.000 95.1065 100.000 108.844 150 53.6227 0.00000 79.1269 21.7000 10.4552 56.9312 151 100.000 100.000 100.000 95.1065 100.000 108.844 152 74.3930 58.1453 0.00000 32.4775 32.8530 5.49070 153 100.000 100.000 100.000 95.1065 100.000 108.844 154 87.3899 64.4799 12.7114 44.5642 43.0498 8.20505 155 100.000 100.000 100.000 95.1065 100.000 108.844 156 38.9539 68.7239 18.3274 21.8585 34.2927 8.96345 157 100.000 100.000 100.000 95.1065 100.000 108.844 158 16.4418 58.1390 58.0640 17.7641 24.6503 32.4536 159 100.000 100.000 100.000 95.1065 100.000 108.844 160 12.8306 62.4024 73.2310 22.7618 29.4460 51.7578 161 100.000 100.000 100.000 95.1065 100.000 108.844 162 54.5972 77.5280 100.000 49.3747 53.4463 102.266 163 100.000 100.000 100.000 95.1065 100.000 108.844 164 74.4926 10.8310 41.7710 25.0180 13.6797 15.8258 165 100.000 100.000 100.000 95.1065 100.000 108.844 166 77.9034 0.00000 100.000 42.0993 20.1239 96.2174 167 100.000 100.000 100.000 95.1065 100.000 108.844 168 53.6227 0.00000 79.1269 21.7000 10.4552 56.9312 169 100.000 100.000 100.000 95.1065 100.000 108.844 170 74.3930 58.1453 0.00000 32.4775 32.8530 5.49070 171 100.000 100.000 100.000 95.1065 100.000 108.844 172 87.3899 64.4799 12.7114 44.5642 43.0498 8.20505 173 100.000 100.000 100.000 95.1065 100.000 108.844 174 38.9539 68.7239 18.3274 21.8585 34.2927 8.96345 175 100.000 100.000 100.000 95.1065 100.000 108.844 176 16.4418 58.1390 58.0640 17.7641 24.6503 32.4536 177 100.000 100.000 100.000 95.1065 100.000 108.844 178 12.8306 62.4024 73.2310 22.7618 29.4460 51.7578 179 100.000 100.000 100.000 95.1065 100.000 108.844 180 54.5972 77.5280 100.000 49.3747 53.4463 102.266 181 100.000 100.000 100.000 95.1065 100.000 108.844 182 74.4926 10.8310 41.7710 25.0180 13.6797 15.8258 183 100.000 100.000 100.000 95.1065 100.000 108.844 184 77.9034 0.00000 100.000 42.0993 20.1239 96.2174 185 100.000 100.000 100.000 95.1065 100.000 108.844 186 53.6227 0.00000 79.1269 21.7000 10.4552 56.9312 187 100.000 100.000 100.000 95.1065 100.000 108.844 188 74.3930 58.1453 0.00000 32.4775 32.8530 5.49070 189 100.000 100.000 100.000 95.1065 100.000 108.844 190 87.3899 64.4799 12.7114 44.5642 43.0498 8.20505 191 100.000 100.000 100.000 95.1065 100.000 108.844 192 38.9539 68.7239 18.3274 21.8585 34.2927 8.96345 193 100.000 100.000 100.000 95.1065 100.000 108.844 194 16.4418 58.1390 58.0640 17.7641 24.6503 32.4536 195 100.000 100.000 100.000 95.1065 100.000 108.844 196 12.8306 62.4024 73.2310 22.7618 29.4460 51.7578 197 100.000 100.000 100.000 95.1065 100.000 108.844 198 54.5972 77.5280 100.000 49.3747 53.4463 102.266 199 100.000 100.000 100.000 95.1065 100.000 108.844 200 74.4926 10.8310 41.7710 25.0180 13.6797 15.8258 201 100.000 100.000 100.000 95.1065 100.000 108.844 202 77.9034 0.00000 100.000 42.0993 20.1239 96.2174 203 100.000 100.000 100.000 95.1065 100.000 108.844 204 53.6227 0.00000 79.1269 21.7000 10.4552 56.9312 205 100.000 100.000 100.000 95.1065 100.000 108.844 206 74.3930 58.1453 0.00000 32.4775 32.8530 5.49070 207 100.000 100.000 100.000 95.1065 100.000 108.844 208 87.3899 64.4799 12.7114 44.5642 43.0498 8.20505 209 100.000 100.000 100.000 95.1065 100.000 108.844 210 38.9539 68.7239 18.3274 21.8585 34.2927 8.96345 211 100.000 100.000 100.000 95.1065 100.000 108.844 212 16.4418 58.1390 58.0640 17.7641 24.6503 32.4536 213 100.000 100.000 100.000 95.1065 100.000 108.844 214 12.8306 62.4024 73.2310 22.7618 29.4460 51.7578 215 100.000 100.000 100.000 95.1065 100.000 108.844 216 54.5972 77.5280 100.000 49.3747 53.4463 102.266 217 100.000 100.000 100.000 95.1065 100.000 108.844 218 74.4926 10.8310 41.7710 25.0180 13.6797 15.8258 219 100.000 100.000 100.000 95.1065 100.000 108.844 220 77.9034 0.00000 100.000 42.0993 20.1239 96.2174 221 100.000 100.000 100.000 95.1065 100.000 108.844 222 53.6227 0.00000 79.1269 21.7000 10.4552 56.9312 223 100.000 100.000 100.000 95.1065 100.000 108.844 224 74.3930 58.1453 0.00000 32.4775 32.8530 5.49070 225 100.000 100.000 100.000 95.1065 100.000 108.844 226 87.3899 64.4799 12.7114 44.5642 43.0498 8.20505 227 100.000 100.000 100.000 95.1065 100.000 108.844 228 38.9539 68.7239 18.3274 21.8585 34.2927 8.96345 229 100.000 100.000 100.000 95.1065 100.000 108.844 230 16.4418 58.1390 58.0640 17.7641 24.6503 32.4536 231 100.000 100.000 100.000 95.1065 100.000 108.844 232 12.8306 62.4024 73.2310 22.7618 29.4460 51.7578 233 100.000 100.000 100.000 95.1065 100.000 108.844 234 54.5972 77.5280 100.000 49.3747 53.4463 102.266 235 100.000 100.000 100.000 95.1065 100.000 108.844 236 74.4926 10.8310 41.7710 25.0180 13.6797 15.8258 237 100.000 100.000 100.000 95.1065 100.000 108.844 238 77.9034 0.00000 100.000 42.0993 20.1239 96.2174 239 100.000 100.000 100.000 95.1065 100.000 108.844 240 53.6227 0.00000 79.1269 21.7000 10.4552 56.9312 241 100.000 100.000 100.000 95.1065 100.000 108.844 242 74.3930 58.1453 0.00000 32.4775 32.8530 5.49070 243 100.000 100.000 100.000 95.1065 100.000 108.844 244 87.3899 64.4799 12.7114 44.5642 43.0498 8.20505 245 100.000 100.000 100.000 95.1065 100.000 108.844 246 38.9539 68.7239 18.3274 21.8585 34.2927 8.96345 247 100.000 100.000 100.000 95.1065 100.000 108.844 248 16.4418 58.1390 58.0640 17.7641 24.6503 32.4536 249 100.000 100.000 100.000 95.1065 100.000 108.844 250 12.8306 62.4024 73.2310 22.7618 29.4460 51.7578 251 100.000 100.000 100.000 95.1065 100.000 108.844 252 54.5972 77.5280 100.000 49.3747 53.4463 102.266 253 100.000 100.000 100.000 95.1065 100.000 108.844 254 74.4926 10.8310 41.7710 25.0180 13.6797 15.8258 255 100.000 100.000 100.000 95.1065 100.000 108.844 256 77.9034 0.00000 100.000 42.0993 20.1239 96.2174 257 100.000 100.000 100.000 95.1065 100.000 108.844 258 53.6227 0.00000 79.1269 21.7000 10.4552 56.9312 259 100.000 100.000 100.000 95.1065 100.000 108.844 260 74.3930 58.1453 0.00000 32.4775 32.8530 5.49070 261 100.000 100.000 100.000 95.1065 100.000 108.844 262 87.3899 64.4799 12.7114 44.5642 43.0498 8.20505 263 100.000 100.000 100.000 95.1065 100.000 108.844 264 38.9539 68.7239 18.3274 21.8585 34.2927 8.96345 265 100.000 100.000 100.000 95.1065 100.000 108.844 266 16.4418 58.1390 58.0640 17.7641 24.6503 32.4536 267 100.000 100.000 100.000 95.1065 100.000 108.844 268 12.8306 62.4024 73.2310 22.7618 29.4460 51.7578 269 100.000 100.000 100.000 95.1065 100.000 108.844 270 54.5972 77.5280 100.000 49.3747 53.4463 102.266 END_DATA -- Vallo