Author Topic: Card benchmark - what's the optimal write buffer size?  (Read 113199 times)

a1ex

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Card benchmark - what's the optimal write buffer size?
« on: May 17, 2013, 04:43:13 PM »
I need some help with a little experiment.

Source: https://bitbucket.org/hudson/magic-lantern/commits/3046238719b2
5D3 113 binary: autoexec.bin

Run it from Debug menu, "Card buffer benchmark (infinite)". It will write a 256MB file with random buffer sizes, which should help us find the optimal ones. The results will be saved in BENCH.LOG on your card - send me these files and I'll post some nice graphs.



You can run the test for as long as you can (1 minute, 1 hour, until the battery runs flat, or leave it during the night if you have an AC adapter).

Be careful:
- BENCH.LOG is overwritten every time you run the test.
- Don't forget about Canon power saving.
- LiveView will shutdown after 30 minutes no matter what, so it's probably best to run it in photo mode.

I know the file size is a bit small, but I'm trying to find the repeatability of this process. Also I want to see if the variations are white noise or there's a clear pattern (e.g. if there are any preferred buffer sizes). Current hypothesis: best buffer sizes are from 16 to 30 MB, with a small speed drop at 32MB.

If you are worried about card wear, don't run the test ;)

You can also post results from other cameras.

Here's an Octave script that you can use to parse BENCH.LOG. It might work in Matlab too.

Code: [Select]
d = dlmread('BENCH.LOG', ' ', 4, 0);
bufsize = d(:,1);
speed = d(:,2) / 10;
plot(bufsize, speed, '*')

paramon

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Re: Card benchmark - what's the optimal write buffer size?
« Reply #1 on: May 17, 2013, 05:21:21 PM »
i can run it on 5Dmkiii, but i have no clue how, my guess - first  is to replace autoexec on the card,
"source" step is mystery to me, then run the test from debug menu, then send you a bench.log,
but what do i do with this piece of code from the first link  :)?

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Re: Card benchmark - what's the optimal write buffer size?
« Reply #2 on: May 17, 2013, 05:29:30 PM »
600D and 6D are up with this test too.

a1ex

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Re: Card benchmark - what's the optimal write buffer size?
« Reply #3 on: May 17, 2013, 05:38:05 PM »
Quote
but what do i do with this piece of code from the first link  :)

You can see what code are running on your camera, review it, see if it has viruses, whatever you want. Welcome to open source world ;)

Greg

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Re: Card benchmark - what's the optimal write buffer size?
« Reply #4 on: May 17, 2013, 05:51:11 PM »
500D + Sandisk 16GB Ultra II 15MB/s
Code: [Select]
Buffer size experiment
ML v2.3.NEXT.2013May17.500D111, 3046238719b2+ (unified) tip
Mode: photo, Global Draw: ON
10312704 109
15885312 109
80896 67
8949760 111
28661760 112
16264192 111
24521728 112
16424960 115
13148160 116
15619072 115
1658880 113
21001216 115
8548352 116
19760128 113
5965824 113
24906752 114
13968384 114
16770048 112
4542464 114
13063168 114
33263616 115
30312448 113
16713728 113
3887104 113
21841920 114
12846080 113
16192512 114
3333120 112
6719488 114
17313792 115
23374848 113
2865152 111
32488448 112
18588672 112
4186112 114
821248 108
3661824 116
18359296 115
19875840 117
22754304 117
13665280 116
24957952 116
28555264 119
33442816 118
10708992 118
20242432 123
8774656 117
11216896 117
23156736 117
12750848 117
12369920 120
2157568 111
15279104 116
29943808 116
30321664 112
19004416 113
268288 98
23778304 111
467968 106
1905664 110
32368640 112
19829760 112
26281984 112
24153088 110
11364352 110
32160768 109
5944320 109
24118272 111
28511232 110
31526912 112
15956992 112
1732608 110
13881344 114
6106112 111
17367040 116
21693440 111
30835712 113
1139712 106

1%

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Re: Card benchmark - what's the optimal write buffer size?
« Reply #5 on: May 17, 2013, 06:01:25 PM »
Samsung UHS 40MB/s (lies)

Code: [Select]
Buffer size experiment
ML v2.3.NEXT.2013May17.6D113, 3d6f2c93c69d (unified) tip
Mode: movie 1920x1080 24p, Global Draw: ON
10312704 285
15885312 301
80896 67
8949760 293
28661760 301
16264192 285
24521728 221
16424960 287
13148160 232
15619072 286
1658880 244
21001216 296
8548352 269
19760128 282
5965824 275
24906752 285
13968384 298
16770048 286
4542464 277
13063168 286
33263616 268
30312448 273
16713728 300
3887104 285
21841920 284
12846080 285
16192512 287
3333120 270
6719488 284
17313792 273
23374848 285
2865152 265
32488448 287
18588672 273
4186112 286
821248 212
3661824 281
18359296 295
19875840 297
22754304 284
13665280 283
24957952 300
28555264 297
33442816 285
10708992 296
20242432 296
8774656 283
11216896 296
23156736 285
12750848 282
12369920 297
2157568 232
15279104 285
29943808 270
30321664 272
19004416 272
268288 146
23778304 297
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32368640 300
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11364352 296
32160768 299
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28059648 296
2145280 230

a1ex

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Re: Card benchmark - what's the optimal write buffer size?
« Reply #6 on: May 17, 2013, 06:08:37 PM »


Now it would be nice to have more data points, but this takes time.

Peter

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Re: Card benchmark - what's the optimal write buffer size?
« Reply #7 on: May 17, 2013, 06:19:52 PM »
5D3 - Sandisk Extreme Pro 32GB 90MB/s

Code: [Select]
Buffer size experiment
ML v2.3.NEXT.2013May17.5D3113, 3046238719b2+ (unified) tip
Mode: playback, Global Draw: ON
CF SanDisk SanDisk SDCFXP-032G                     
10312704 984
15885312 1044
80896 238
8949760 1004
28661760 1034
16264192 1053
24521728 1049
16424960 1031
13148160 1021
15619072 1046
1658880 744
21001216 1011
8548352 1001
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3333120 924
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13665280 1024
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33442816 894
10708992 981
20242432 1050
8774656 1012
11216896 1017
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12750848 1043
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32368640 878
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11364352 1014
32160768 1062
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30835712 888
1139712 678
13698048 1052
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27086848 1054
24894464 1052
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30015488 893
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13642752 1037
7861248 1000
21999616 1062
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3162112 929
27608064 1059
18791424 1045

vstrglv

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Re: Card benchmark - what's the optimal write buffer size?
« Reply #8 on: May 17, 2013, 06:24:20 PM »
Alex, thank you very much for research! But how to stop the test and how to send a  Bench.log to you?
MarkIII
[spoiler]Buffer size experiment
ML v2.3.NEXT.2013May17.5D3113, 3046238719b2+ (unified) tip
Mode: movie 1920x1080 24p, Global Draw: OFF
CF TRANSCEND        TS32GCF600                             
10312704 570
15885312 620
80896 227
8949760 631
28661760 652
16264192 915
24521728 885
16424960 891
13148160 910
15619072 898
1658880 779
21001216 896
8548352 892
19760128 897
5965824 869
24906752 900
13968384 888
16770048 912
4542464 860
13063168 889
33263616 929
30312448 905
16713728 912
3887104 860
21841920 896
12846080 911
16192512 899
3333120 844
6719488 873
17313792 913
23374848 897
2865152 832
32488448 922
18588672 898
4186112 853
821248 712
3661824 846
18359296 911
19875840 895
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28555264 911
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1732608 790
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6019072 872
13303808 903
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13137920 909
24311808 920
25442304 928
8986624 285
25421824 307
2720768 823
18526208 880
12448768 1093
[/spoiler]

[spoiler]Buffer size experiment
ML v2.3.NEXT.2013May17.5D3113, 3046238719b2+ (unified) tip
Mode: playback, Global Draw: OFF
CF TRANSCEND        TS32GCF600                             
10312704 682
15885312 715
80896 354
8949760 711
28661760 723
16264192 1057
24521728 1138
16424960 1125
13148160 1135
15619072 1138
1658880 1012
21001216 1134
8548352 1125
19760128 1139
5965824 1106
24906752 1140
13968384 1137
16770048 1142
4542464 1103
13063168 1137
33263616 1147
30312448 1143
16713728 1137
3887104 1080
21841920 1141
12846080 1103
16192512 1137
3333120 1094
6719488 1122
17313792 1136
23374848 1136
2865152 1063
32488448 1139
18588672 1142
4186112 1107
821248 954
3661824 1068
18359296 1130
19875840 1136
22754304 1132
13665280 1136
24957952 1142
28555264 1144
33442816 1143
10708992 1131
20242432 1143
8774656 1116
11216896 1127
23156736 1136
12750848 1132
12369920 1135
2157568 1045
15279104 1136
29943808 1135
30321664 1140
19004416 1117
268288 697
23778304 1143
467968 832
1905664 1053
32368640 1139
19829760 1141
26281984 1143
24153088 1059
11364352 1128
32160768 1146
5944320 1119
24118272 1136
28511232 1146
31526912 1144
15956992 1138
1732608 1046
13881344 1134
6106112 1119
17367040 1137
21693440 1119
30835712 1173
1139712 981
13698048 1138
19388416 1142
1532928 1030
16333824 1136
15963136 1141
23540736 1149
23770112 1123
7317504 1103
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32039936 1140
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8986624 1137
25421824 1150
2720768 1088
18526208 1143
12448768 1138
6514688 971
6632448 1127
17897472 1146
26569728 1151
22568960 1148
11912192 1142
22007808 1152
30651392 1105
29615104 724
18367488 725
21049344 734
15778816 735
24951808 822
5359616 1114
23476224 1140
17125376 1128
3318784 1095
12782592 1137
30965760 1135
1974272 1029
32021504 1136
24463360 1139
28246016 1132
23352320 1075
27161600 1131
25191424 1120
10841088 1120
22846464 1131
19111936 984
26234880 1065
32610304 1137
14385152 1098
18029568 1041
11080704 1114
3933184 1103
22414336 1133
8314880 1126
27988992 1124
20073472 1061
23487488 1131
30233600 1130
25299968 1129
2406400 1016
28059648 1128
2145280 1008
27503616 1095
20705280 1114
28731392 1134
2458624 1034
19662848 1127
[/spoiler]
Canon 5D3,1.1.3; Canon EOS M,202,  CF-SanDisk Extreme PRO,160MB/s, 256GB, SD-SanDisk Extreme Pro, 170MB/s, 128GB.

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Re: Card benchmark - what's the optimal write buffer size?
« Reply #9 on: May 17, 2013, 06:25:04 PM »
600D Patriot EP 64GB

Code: [Select]
Buffer size experiment
ML v2.3.NEXT.2013May17.600D102, cd52bc1653e9 tip
Mode: movie 640x480 30p, Global Draw: ON
10312704 166
15885312 188
80896 59
8949760 196
28661760 197
16264192 200
24521728 194
16424960 198
13148160 199
15619072 192
1658880 184
21001216 201
8548352 196
19760128 200
5965824 195
24906752 199
13968384 199
16770048 201
4542464 194
13063168 196
33263616 201
30312448 198
16713728 194
3887104 182
21841920 191
12846080 183
16192512 186
3333120 181
6719488 183
17313792 193
23374848 189
2865152 181
32488448 191
18588672 190
4186112 188
821248 160
3661824 189
18359296 197
19875840 193
22754304 183
13665280 183
24957952 167
28555264 164
33442816 186
10708992 187
20242432 181
8774656 187
11216896 186
23156736 123
12750848 115
12369920 99
2157568 100
15279104 142

sergiocamara93

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Re: Card benchmark - what's the optimal write buffer size?
« Reply #10 on: May 17, 2013, 06:29:30 PM »
I'm running it on a 5D Mk III with a 400x 16GB Lexar CF card, I don't know if with that speed the benchmark would be of any help but it can't harm  :)
I have more than half charge on the battery so it can take a while.
5D Mark III

Stedda

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Re: Card benchmark - what's the optimal write buffer size?
« Reply #11 on: May 17, 2013, 06:44:30 PM »
Gave it a good 10 mins....

5D III
Transcend 32GB 1000X

Buffer size experiment
ML v2.3.NEXT.2013May17.5D3113, 3046238719b2+ (unified) tip
Mode: photo, Global Draw: ON
CF TRANSCEND        TS32GCF1000                             
10312704 993
15885312 995
80896 336
8949760 977
28661760 1016
16264192 999
24521728 985
16424960 1061
13148160 1058
15619072 1069
1658880 961
21001216 1068
8548352 1017
19760128 1072
5965824 1030
24906752 1006
13968384 1063
16770048 1069
4542464 1021
13063168 1066
33263616 1074
30312448 1062
16713728 1073
3887104 998
21841920 1068
12846080 1060
16192512 1067
3333120 1001
6719488 1054
17313792 1069
23374848 1072
2865152 983
32488448 1075
18588672 1070
4186112 1033
821248 876
3661824 1008
18359296 1000
19875840 1074
22754304 1064
13665280 1056
24957952 1072
28555264 1047
33442816 1077
10708992 1058
20242432 1071
8774656 985
11216896 1057
23156736 1069
12750848 1066
12369920 1044
2157568 963
15279104 1011
29943808 1059
30321664 1069
19004416 1041
268288 653
23778304 1051
467968 772
1905664 964
32368640 1076
19829760 1044
26281984 1054
24153088 1058
11364352 1065
32160768 1056
5944320 1027
24118272 1032
28511232 1072
31526912 1067
15956992 1003
1732608 886
13881344 1065
6106112 1022
17367040 1069
21693440 1070
30835712 1067
1139712 915
13698048 1069
19388416 1073
1532928 956
16333824 1060
15963136 1072
23540736 1062
23770112 1059
7317504 1036
6019072 1055
13303808 1069
32039936 1073
13137920 1062
24311808 1047
25442304 1030
8986624 1064
25421824 1077
2720768 999
18526208 1074
12448768 1070
6514688 1048
6632448 1036
17897472 1068
26569728 1080
22568960 1073
11912192 1065
22007808 1067
30651392 1080
29615104 1052
18367488 1073
21049344 1072
15778816 1068
24951808 1075
5359616 1031
23476224 1074
17125376 1072
3318784 1031
12782592 1042
30965760 1073
1974272 991
32021504 1076
24463360 1073
28246016 1051
23352320 1052
27161600 1073
25191424 1066
10841088 1025
22846464 1077
19111936 1075
26234880 1054
32610304 1070
14385152 1071
18029568 1061
11080704 1067
3933184 1017
22414336 1070
8314880 1063
27988992 1076
20073472 1058
23487488 1053
30233600 1073
25299968 1072
2406400 1008
28059648 1077
2145280 986
27503616 1061
20705280 1014
28731392 1074
2458624 851
19662848 861
6198272 1052
21655552 1074
32225280 1057
21788672 1078
5D Mark III -- 7D   SOLD -- EOS M 22mm 18-55mm STM -- Fuji X-T1 18-55 F2.8-F4 & 35 F1.4
Canon Glass   100L F2.8 IS -- 70-200L F4 -- 135L F2 -- 85 F1.8 -- 17-40L --  40 F2.8 -- 35 F2 IS  Sigma Glass  120-300 F2.8 OS -- 50 F1.4 -- 85 F1.4  Tamron Glass   24-70 2.8 VC   600EX-RT X3

Stedda

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Re: Card benchmark - what's the optimal write buffer size?
« Reply #12 on: May 17, 2013, 06:45:40 PM »
If you're looking for a certain amount of time I can do that... I also have other cards a 400X and a 600X both Transcend if that helps....
5D Mark III -- 7D   SOLD -- EOS M 22mm 18-55mm STM -- Fuji X-T1 18-55 F2.8-F4 & 35 F1.4
Canon Glass   100L F2.8 IS -- 70-200L F4 -- 135L F2 -- 85 F1.8 -- 17-40L --  40 F2.8 -- 35 F2 IS  Sigma Glass  120-300 F2.8 OS -- 50 F1.4 -- 85 F1.4  Tamron Glass   24-70 2.8 VC   600EX-RT X3

sergiocamara93

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Re: Card benchmark - what's the optimal write buffer size?
« Reply #13 on: May 17, 2013, 07:17:45 PM »
I run it for 20 minutes. It got a max of 42MB/s which is not what it usually gets when recording RAW (tried at 1280x720).
I repeat it was a 5D Mark III, Lexar 16GB 400x CF.
Code: [Select]
Buffer size experiment
ML v2.3.NEXT.2013May17.5D3113, 3046238719b2+ (unified) tip
Mode: playback, Global Draw: OFF
CF LEXAR ATA FLASH CARD LEXAR ATA FLASH CARD                   
10312704 314
15885312 407
80896 271
8949760 412
28661760 418
16264192 413
24521728 417
16424960 415
13148160 414
15619072 414
1658880 400
21001216 414
8548352 414
19760128 418
5965824 412
24906752 417
13968384 415
16770048 415
4542464 412
13063168 414
33263616 420
30312448 414
16713728 419
3887104 412
21841920 415
12846080 415
16192512 418
3333120 411
6719488 413
17313792 419
23374848 415
2865152 410
32488448 416
18588672 419
4186112 412
821248 392
3661824 411
18359296 415
19875840 415
22754304 416
13665280 385
24957952 414
28555264 417
33442816 415
10708992 414
20242432 413
8774656 383
11216896 413
23156736 413
12750848 413
12369920 412
2157568 404
15279104 415
29943808 411
30321664 412
19004416 413
268288 347
23778304 303
467968 261
1905664 258
32368640 402
19829760 272
26281984 413
24153088 417
11364352 413
32160768 415
5944320 412
24118272 418
28511232 416
31526912 418
15956992 415
1732608 404
13881344 416
6106112 416
17367040 415
21693440 416
30835712 389
1139712 399
13698048 415
19388416 414
1532928 404
16333824 419
15963136 415
23540736 420
23770112 416
7317504 414
6019072 414
13303808 415
32039936 419
13137920 416
24311808 417
25442304 419
8986624 414
25421824 420
2720768 410
18526208 415
12448768 415
6514688 418
6632448 414
17897472 415
26569728 416
22568960 415
11912192 418
22007808 415
30651392 414
29615104 420
18367488 409
21049344 418
15778816 415
24951808 414
5359616 412
23476224 418
17125376 413
3318784 409
12782592 413
30965760 388
1974272 315
32021504 363
24463360 297
28246016 338
23352320 312
27161600 222
25191424 417
10841088 319
22846464 318
19111936 388
26234880 341
32610304 415
14385152 418
18029568 414
11080704 415
3933184 413
22414336 418
8314880 415
27988992 418
20073472 419
23487488 416
30233600 419
25299968 415
2406400 408
28059648 416
2145280 408
27503616 419
20705280 416
28731392 421
2458624 409
19662848 416
6198272 417
21655552 417
32225280 416
21788672 420
16669696 417
12007424 416
4321280 413
14878720 420
10118144 416
2836480 411
21092352 420
17086464 416
1707008 406
17509376 417
28161024 420
18457600 417
16290816 420
10758144 416
17766400 416
28011520 418
19835904 383
11879424 415
18191360 387
12581888 414
15906816 418
6525952 413
30545920 418
934912 395
6738944 412
18920448 415
27171840 416
19916800 412
28598272 397
5D Mark III

a1ex

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Re: Card benchmark - what's the optimal write buffer size?
« Reply #14 on: May 17, 2013, 07:41:11 PM »
Updated graphs in the first post. Thanks guys!

The absolute value is not very relevant here; I'm looking for drops in the write speed. If these drops are clearly correlated with certain buffer sizes, then we'll know how to avoid them.

I hope some of you can also run a longer test, over a couple of hours.

Colemar

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Re: Card benchmark - what's the optimal write buffer size?
« Reply #15 on: May 17, 2013, 08:11:07 PM »
Lexar Professional 1000x 32GB CompactFlash

Code: [Select]
Buffer size experiment
ML v2.3.NEXT.2013May17.5D3113, 3046238719b2+ (unified) tip
Mode: playback, Global Draw: OFF
CF LEXAR ATA FLASH CARD LEXAR ATA FLASH CARD                   
10312704 1152
15885312 1162
80896 296
8949760 1142
28661760 1164
16264192 930
24521728 1080
16424960 1165
13148160 1163
15619072 1079
1658880 1032
21001216 1171
8548352 1053
19760128 1165
5965824 1110
24906752 1166
13968384 1132
16770048 1166
4542464 1121
13063168 1159
33263616 1174
30312448 1172
16713728 1166
3887104 1112
21841920 1168
12846080 1159
16192512 1166
3333120 1102
6719488 1141
17313792 1164
23374848 1168
2865152 1091
32488448 1169
18588672 1166
4186112 1093
821248 910
3661824 1108
18359296 1167
19875840 1166
22754304 1165
13665280 1159
24957952 1161
28555264 1173
33442816 1174
10708992 1156
20242432 1168
8774656 1151
11216896 1155
23156736 1167
12750848 1159
12369920 1158
2157568 1042
15279104 1164
29943808 1196
30321664 1165
19004416 1170
268288 611
23778304 1169
467968 730
1905664 1048
32368640 1172
19829760 1167
26281984 1172
24153088 1173
11364352 1151
32160768 1173
5944320 1136
24118272 1170
28511232 1174
31526912 1170
15956992 1163
1732608 1032
13881344 1160
6106112 1133
17367040 1165
21693440 1166
30835712 1166
1139712 958
13698048 1077
19388416 1086
1532928 1019
16333824 1163
15963136 1164
23540736 1168
23770112 1169
7317504 1143
6019072 1135
13303808 1136
32039936 1171
13137920 1132
24311808 1140
25442304 1168
8986624 1125
25421824 1197
2720768 1061
18526208 1165
12448768 1155
6514688 1140
6632448 1063
17897472 1166
26569728 1174
22568960 1166
11912192 1158
22007808 1170
30651392 1176
29615104 1173
18367488 1166
21049344 1169
15778816 1167
24951808 1168
5359616 1133
23476224 1169
17125376 1167
3318784 1101
12782592 1164
30965760 1163
1974272 1054
32021504 1059
24463360 1080
28246016 1054
23352320 1146
27161600 1177
25191424 1068

I'll run a test on Sandisk Extreme Pro CF for a few hours and post back later

Stedda

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Re: Card benchmark - what's the optimal write buffer size?
« Reply #16 on: May 17, 2013, 08:34:46 PM »
I hope some of you can also run a longer test, over a couple of hours.

You got it.... I'll get what I can out of a set of batteries...
5D Mark III -- 7D   SOLD -- EOS M 22mm 18-55mm STM -- Fuji X-T1 18-55 F2.8-F4 & 35 F1.4
Canon Glass   100L F2.8 IS -- 70-200L F4 -- 135L F2 -- 85 F1.8 -- 17-40L --  40 F2.8 -- 35 F2 IS  Sigma Glass  120-300 F2.8 OS -- 50 F1.4 -- 85 F1.4  Tamron Glass   24-70 2.8 VC   600EX-RT X3

X-RAY

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Re: Card benchmark - what's the optimal write buffer size?
« Reply #17 on: May 17, 2013, 09:26:30 PM »
And what about the 5D2? Not necessary in this test?
www.frankenfotograf.com
instagram.com/frankenfotograf

Stedda

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  • Posts: 504
Re: Card benchmark - what's the optimal write buffer size?
« Reply #18 on: May 17, 2013, 10:24:32 PM »
2 hours same card....

Code: [Select]
Buffer size experiment
ML v2.3.NEXT.2013May17.5D3113, 3046238719b2+ (unified) tip
Mode: photo, Global Draw: ON
CF TRANSCEND        TS32GCF1000                             
10312704 972
15885312 982
80896 332
8949760 994
28661760 1006
16264192 988
24521728 1026
16424960 1077
13148160 1074
15619072 1063
1658880 976
21001216 1088
8548352 1074
19760128 1088
5965824 1043
24906752 1068
13968384 1087
16770048 1086
4542464 1058
13063168 1063
33263616 1093
30312448 1075
16713728 1087
3887104 1040
21841920 1069
12846080 1060
16192512 1087
3333120 1044
6719488 1068
17313792 1084
23374848 995
2865152 1022
32488448 1093
18588672 1092
4186112 1028
821248 915
3661824 1011
18359296 1063
19875840 1090
22754304 1087
13665280 1076
24957952 1088
28555264 1093
33442816 1070
10708992 1081
20242432 1079
8774656 1079
11216896 1072
23156736 1067
12750848 1082
12369920 1083
2157568 1016
15279104 1087
29943808 1071
30321664 1087
19004416 1065
268288 670
23778304 1091
467968 799
1905664 990
32368640 1083
19829760 1078
26281984 1072
24153088 1025
11364352 1081
32160768 1093
5944320 1015
24118272 1090
28511232 1065
31526912 1086
15956992 1086
1732608 995
13881344 1086
6106112 1035
17367040 1088
21693440 1090
30835712 1090
1139712 929
13698048 1081
19388416 1077
1532928 982
16333824 1086
15963136 1057
23540736 1088
23770112 1091
7317504 1064
6019072 1065
13303808 1065
32039936 1089
13137920 1085
24311808 1090
25442304 1042
8986624 1068
25421824 1059
2720768 958
18526208 1081
12448768 1082
6514688 1049
6632448 1063
17897472 1084
26569728 1092
22568960 1088
11912192 1080
22007808 1061
30651392 1091
29615104 1084
18367488 1086
21049344 1089
15778816 1089
24951808 1089
5359616 1043
23476224 1074
17125376 1085
3318784 1043
12782592 1082
30965760 1022
1974272 989
32021504 1091
24463360 1088
28246016 1081
23352320 1088
27161600 1092
25191424 1091
10841088 1058
22846464 1055
19111936 1090
26234880 1093
32610304 1085
14385152 1084
18029568 1087
11080704 1059
3933184 1040
22414336 1089
8314880 1077
27988992 1089
20073472 1081
23487488 1067
30233600 1052
25299968 1067
2406400 1023
28059648 1090
2145280 962
27503616 1066
20705280 1076
28731392 1083
2458624 1025
19662848 1092
6198272 1067
21655552 1069
32225280 1096
21788672 1079
16669696 1081
12007424 1082
4321280 1036
14878720 1080
10118144 1080
2836480 1036
21092352 1079
17086464 1059
1707008 990
17509376 1068
28161024 1030
18457600 1064
16290816 1078
10758144 1079
17766400 1089
28011520 1090
19835904 1019
11879424 1040
18191360 1089
12581888 1073
15906816 1083
6525952 1070
30545920 1087
934912 912
6738944 1064
18920448 1078
27171840 1088
19916800 1067
28598272 1096
23926784 1092
10470400 1080
20392960 1089
7282688 1056
4824064 1037
11820032 1079
30988288 1087
26221568 1093
13527040 1081
30140416 1077
6785024 1051
25762816 1031
23324672 1088
26011648 1070
4475904 1059
33500160 1071
8732672 1069
29461504 1091
12411904 1083
12294144 1072
11481088 1058
12786688 1058
15858688 1076
16142336 1085
29415424 1094
32114688 1091
18460672 1086
15672320 1059
12832768 1082
23447552 1078
18734080 1094
25832448 1092
20690944 1091
27086848 1085
24894464 1091
32919552 1074
30015488 1088
2870272 939
27643904 1088
25778176 1094
4189184 1054
13642752 1060
7861248 1076
21999616 1089
4232192 1050
12140544 1084
3162112 1019
27608064 1085
18791424 1082
5019648 1062
15958016 1090
20426752 1068
685056 881
18709504 1091
6188032 1039
6668288 1070
30684160 1087
9438208 1082
20264960 1088
1707008 969
4702208 1061
27417600 1033
31681536 1091
1326080 955
9743360 1081
29618176 1092
28645376 1091
21629952 1050
21515264 1065
12170240 1083
29555712 1095
2771968 1032
30593024 1089
23996416 1067
31484928 1076
24702976 1080
24359936 1093
32328704 1091
21560320 1088
18289664 1089
26721280 1063
33334272 1072
29471744 1089
30886912 1079
10810368 1080
16393216 1092
4559872 1034
17182720 1034
251904 645
10129408 1081
18564096 1088
30530560 1081
5036032 1062
10642432 1071
1025024 928
20564992 1087
17504256 1087
19713024 1089
12450816 1061
596992 836
20088832 1057
3368960 1045
12530688 1082
29465600 1089
10443776 1052
23064576 1087
32175104 1085
9240576 1080
30198784 1088
11613184 1073
7633920 1073
22871040 1021
22456320 1070
16783360 1077
1076224 930
1472512 960
53248 264
22145024 1063
13445120 1042
15488000 1075
17851392 1092
8222720 1075
3790848 1026
31733760 1065
4009984 1058
29513728 1077
29906944 1092
25694208 1090
16442368 1089
3623936 1027
29339648 1092
27055104 1087
12034048 1077
32011264 1082
32172032 1091
22600704 1090
13225984 1059
28665856 1092
11716608 1026
28250112 1089
5085184 1064
28856320 1060
218112 610
21444608 1046
30626816 1088
7068672 1063
31740928 1072
27124736 1084
17964032 1088
23683072 1092
10264576 1074
23499776 1056
23206912 1086
29933568 1089
13522944 1080
28731392 1091
13669376 1084
18453504 1090
8773632 1033
31521792 1067
32563200 1043
14050304 1085
23192576 1091
2580480 973
12610560 1065
8542208 1080
21291008 1086
1245184 943
9519104 1080
29709312 1094
14656512 1074
19511296 1079
17680384 1065
31774720 1096
17035264 1089
16637952 1082
24604672 1084
23776256 1082
12297216 1081
31228928 1093
19137536 1059
11517952 1081
25170944 1089
10852352 1073
14022656 1083
27422720 1091
2764800 1016
31773696 1081
25122816 1089
6719488 1023
20889600 1082
13719552 1080
26656768 1074
27925504 1089
25307136 1090
30016512 1077
15267840 1088
1992704 1009
7454720 1056
13520896 1086
19296256 1089
15080448 1084
2733056 1027
6084608 1032
7767040 1076
19521536 1083
11791360 1085
4573184 1059
31201280 1088
12889088 1059
10139648 1083
24348672 1084
178176 560
9086976 1080
1422336 926
20881408 1087
2706432 1007
29356032 1069
9225216 1082
9115648 1069
19433472 1086
2195456 998
31977472 1085
7171072 1072
8365056 1078
31093760 1089
17173504 1089
2191360 1001
2806784 1034
26635264 1084
11782144 1081
25329664 1066
23643136 1059
26715136 1093
3762176 1047
4759552 1052
21786624 1065
12112896 1086
28181504 1091
25351168 1092
33405952 1042
19030016 1050
9690112 1026
23938048 1090
13831168 1087
14360576 1085
5323776 1039
12928000 1082
7570432 1024
13710336 1083
7164928 1051
13621248 1060
29969408 1088
29436928 1093
9693184 1080
10413056 1070
16844800 1076
6436864 1045
3139584 1041
1518592 991
22846464 1088
15690752 1053
31619072 1091
19501056 1086
16398336 1080
6238208 1069
15412224 1062
13130752 1085
32825344 1079
19061760 1089
22163456 1090
24397824 1070
18536448 1076
24160256 1071
22958080 1080
4352000 1056
11240448 1040
6855680 1050
3570688 1046
4942848 1060
12975104 1046
24314880 1094
12750848 1082
3128320 936
29314048 1071
5171200 1060
18586624 1079
12131328 1084
22717440 1086
6662144 1007
3102720 1042
13159424 1076
21650432 1090
1045504 920
6996992 1073
8030208 1077
41984 221
646144 856
2521088 1008
24885248 1065
14108672 1087
6751232 1073
1507328 967
27210752 1088
4873216 1061
8120320 1069
25854976 1091
5417984 1035
26497024 1094
15966208 1085
8155136 1073
11756544 1081
25576448 1083
14921728 1085
8012800 1052
24283136 1085
18381824 1088
29868032 1088
16788480 1077
29538304 1092
28482560 1087
22857728 1064
11183104 1061
1052672 938
5559296 1045
15012864 1077
32344064 1093
13061120 1085
28729344 1092
9480192 1079
30612480 1081
20639744 1061
10013696 1080
5862400 1069
18298880 1082
23938048 1089
29583360 1071
2676736 1014
31510528 1073
2937856 1039
23347200 1065
11726848 1061
2904064 1035
20049920 1087
26983424 1082
1421312 964
13773824 1079
26993664 1089
15478784 1081
6122496 1071
31414272 1090
24333312 1061
16172032 1063
31551488 1082
30025728 1089
24596480 1084
16249856 1087
21200896 1081
1811456 1003
12495872 1062
22435840 1086
1756160 997
19796992 1083
6949888 1070
32049152 1060
26814464 1043
5679104 974
5804032 1029
8168448 1059
7987200 1057
7357440 1038
10604544 1021
32722944 1039
22999040 1076
16946176 1069
27879424 1071
16748544 1049
26218496 1061
8698880 989
24347648 1075
17693696 1047
11396096 1065
27094016 1067
18161664 1060
17741824 1071
7563264 1035
11387904 1056
6795264 1053
13068288 1067
33315840 1053
1360896 931
179200 542
31031296 1092
29638656 1093
6290432 1059
17600512 1090
23806976 1059
22608896 1062
13219840 1084
2768896 1032
28721152 1090
13686784 1084
31881216 1052
21140480 1062
27467776 1070
6325248 1068
18780160 1026
29000704 1087
5698560 1045
13757440 1080
32033792 1092
1196032 938
7829504 1047
13819904 1065
4787200 1059
31131648 1078
6534144 1049
17713152 1087
10491904 1025
28841984 1095
8125440 1054
30911488 1055
19365888 1083
11707392 1081
5778432 1069
16601088 1087
21358592 1079
26169344 1069
1667072 990
4779008 1059
29435904 1094
662528 865
28992512 1092
24974336 1086
23857152 1053
401408 765
15919104 1084
27906048 1093
23015424 1092
4002816 1054
24198144 1071
29455360 1089
25784320 1080
17810432 1085
1175552 943
33447936 1095
4911104 1064
20684800 1075
11038720 1084
22244352 1069
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5D Mark III -- 7D   SOLD -- EOS M 22mm 18-55mm STM -- Fuji X-T1 18-55 F2.8-F4 & 35 F1.4
Canon Glass   100L F2.8 IS -- 70-200L F4 -- 135L F2 -- 85 F1.8 -- 17-40L --  40 F2.8 -- 35 F2 IS  Sigma Glass  120-300 F2.8 OS -- 50 F1.4 -- 85 F1.4  Tamron Glass   24-70 2.8 VC   600EX-RT X3

Stedda

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Re: Card benchmark - what's the optimal write buffer size?
« Reply #19 on: May 17, 2013, 10:25:20 PM »
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5D Mark III -- 7D   SOLD -- EOS M 22mm 18-55mm STM -- Fuji X-T1 18-55 F2.8-F4 & 35 F1.4
Canon Glass   100L F2.8 IS -- 70-200L F4 -- 135L F2 -- 85 F1.8 -- 17-40L --  40 F2.8 -- 35 F2 IS  Sigma Glass  120-300 F2.8 OS -- 50 F1.4 -- 85 F1.4  Tamron Glass   24-70 2.8 VC   600EX-RT X3

Peter

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Re: Card benchmark - what's the optimal write buffer size?
« Reply #20 on: May 17, 2013, 10:46:43 PM »
Here are the results of a 3 hour stress test on a 5D Mark III & Sandisk Extreme Pro 32GB.

I was a little concerned about heat but card and camera body didn't get warmer than after a 10 minute test.

https://dl.dropboxusercontent.com/u/10273766/BENCH.LOG

a1ex

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Re: Card benchmark - what's the optimal write buffer size?
« Reply #21 on: May 17, 2013, 10:53:47 PM »
These long tests are really nice. Keep them coming, please!


Stedda

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Re: Card benchmark - what's the optimal write buffer size?
« Reply #22 on: May 17, 2013, 11:12:13 PM »
Safe to leave unattended?

I could pop out an 8 hour test while I'm at work.
5D Mark III -- 7D   SOLD -- EOS M 22mm 18-55mm STM -- Fuji X-T1 18-55 F2.8-F4 & 35 F1.4
Canon Glass   100L F2.8 IS -- 70-200L F4 -- 135L F2 -- 85 F1.8 -- 17-40L --  40 F2.8 -- 35 F2 IS  Sigma Glass  120-300 F2.8 OS -- 50 F1.4 -- 85 F1.4  Tamron Glass   24-70 2.8 VC   600EX-RT X3

Shizuka

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Re: Card benchmark - what's the optimal write buffer size?
« Reply #23 on: May 17, 2013, 11:22:23 PM »
These long tests are really nice. Keep them coming, please!



Wow, I guess that goes to show that not all cards are created equal... the Sandisk card is a mess of inconsistency compared to the Transcend cards!

a1ex

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Re: Card benchmark - what's the optimal write buffer size?
« Reply #24 on: May 17, 2013, 11:26:57 PM »
Well, 1% told me that 32MB is a bit slower, and a screenshot from EOSHD seems to confirm this (98.1MB/s with 31M buffer and 88.4 with 32). I want to see if this variation is measurement noise, or if there are some buffer sizes that are really slower. But from these early results, it seems not to be the case.