Investigate how other types of sections (excluding code and data) in a wasm module contribute to instantiation time
ByteNacked opened this issue · 2 comments
ByteNacked commented
Problem to Solve
Investigate how other types of sections (excluding code and data) in a wasm module contribute to instantiation time.
Section like:
- type
- table
- global
- etc..
Possible Solution
Investigate by writing instantiation module benches for these sections.
ByteNacked commented
Local bench run
$ ./target/release/gear benchmark pallet --chain=vara-dev --steps=50 --repeat=20 --pallet=pallet_gear --extrinsic=instantiate_module_code_section_per_kb,instantiate_module_data_section_per_kb,instantiate_module_global_section_per_kb,instantiate_module_table_section_per_kb,instantiate_module_type_section_per_kb --heap-pages=4096
2024-05-06 15:14:12 [0] 💸 generated 1 npos voters, 1 from validators and 0 nominators
2024-05-06 15:14:12 [0] 💸 generated 1 npos targets
2024-05-06 15:14:12 Starting benchmark: pallet_gear::instantiate_module_code_section_per_kb
2024-05-06 15:14:18 Running benchmark: pallet_gear.instantiate_module_code_section_per_kb(1 args) 32/50 1/1
2024-05-06 15:14:23 Running benchmark: pallet_gear.instantiate_module_code_section_per_kb(1 args) 45/50 1/1
2024-05-06 15:14:25 Starting benchmark: pallet_gear::instantiate_module_data_section_per_kb
2024-05-06 15:14:28 Starting benchmark: pallet_gear::instantiate_module_global_section_per_kb
2024-05-06 15:14:28 Running benchmark: pallet_gear.instantiate_module_global_section_per_kb(1 args) 5/50 1/1
2024-05-06 15:14:33 Running benchmark: pallet_gear.instantiate_module_global_section_per_kb(1 args) 29/50 1/1
2024-05-06 15:14:38 Running benchmark: pallet_gear.instantiate_module_global_section_per_kb(1 args) 41/50 1/1
2024-05-06 15:14:44 Running benchmark: pallet_gear.instantiate_module_global_section_per_kb(1 args) 50/50 1/1
2024-05-06 15:14:44 Starting benchmark: pallet_gear::instantiate_module_table_section_per_kb
2024-05-06 15:14:48 Starting benchmark: pallet_gear::instantiate_module_type_section_per_kb
2024-05-06 15:14:49 Running benchmark: pallet_gear.instantiate_module_type_section_per_kb(1 args) 10/50 1/1
2024-05-06 15:14:54 Running benchmark: pallet_gear.instantiate_module_type_section_per_kb(1 args) 30/50 1/1
2024-05-06 15:14:59 Running benchmark: pallet_gear.instantiate_module_type_section_per_kb(1 args) 41/50 1/1
Pallet: "pallet_gear", Extrinsic: "instantiate_module_code_section_per_kb", Lowest values: [], Highest values: [], Steps: 50, Repeat: 20
Raw Storage Info
========
Median Slopes Analysis
========
2024-05-06 15:15:04 Running benchmark: pallet_gear.instantiate_module_type_section_per_kb(1 args) 50/50 1/1
-- Extrinsic Time --
Model:
Time ~= 36.28
+ c 0.101
µs
Reads = 0 + (0 * c)
Writes = 0 + (0 * c)
Recorded proof Size = 0 + (0 * c)
Min Squares Analysis
========
-- Extrinsic Time --
Data points distribution:
c mean µs sigma µs %
0 36.82 0.495 1.3%
10 39.04 0.394 1.0%
20 39.09 0.409 1.0%
31 40.04 0.321 0.8%
41 41.35 0.795 1.9%
52 42.9 0.72 1.6%
62 41.94 0.404 0.9%
73 43.72 0.724 1.6%
83 43.49 0.391 0.8%
94 46.41 0.505 1.0%
104 46.98 0.519 1.1%
114 47.34 1.115 2.3%
125 48.43 0.456 0.9%
135 50.26 1.205 2.3%
146 51.31 1.337 2.6%
156 53.34 2.054 3.8%
167 52.49 1 1.9%
177 54 1.364 2.5%
188 55.23 1.92 3.4%
198 57.08 2.177 3.8%
208 57.61 1.394 2.4%
219 56.93 1.072 1.8%
229 58.57 0.969 1.6%
240 58.3 0.981 1.6%
250 60.09 1.411 2.3%
261 61.6 1.501 2.4%
271 62.68 1.397 2.2%
282 68.16 4.623 6.7%
292 61.99 1.592 2.5%
303 64.27 1.066 1.6%
313 64.9 1.158 1.7%
323 63.82 1.188 1.8%
334 67.83 0.896 1.3%
344 66.42 0.607 0.9%
355 72.66 2.077 2.8%
365 72.15 1.584 2.1%
376 69.02 0.929 1.3%
386 77.17 2.285 2.9%
397 74.7 1.239 1.6%
407 82.85 2.497 3.0%
417 78.6 2.157 2.7%
428 78.12 1.588 2.0%
438 80.93 2.29 2.8%
449 82.18 1.225 1.4%
459 90.18 2.857 3.1%
470 96.42 6.062 6.2%
480 84.89 1.905 2.2%
491 94.39 1.454 1.5%
501 104.9 5.433 5.1%
512 96.54 2.941 3.0%
Quality and confidence:
param error
c 0.001
Model:
Time ~= 34.61
+ c 0.11
µs
Reads = 0 + (0 * c)
Writes = 0 + (0 * c)
Recorded proof Size = 0 + (0 * c)
Pallet: "pallet_gear", Extrinsic: "instantiate_module_data_section_per_kb", Lowest values: [], Highest values: [], Steps: 50, Repeat: 20
Raw Storage Info
========
Median Slopes Analysis
========
-- Extrinsic Time --
Model:
Time ~= 55.35
+ d 0.328
µs
Reads = 0 + (0 * d)
Writes = 0 + (0 * d)
Recorded proof Size = 0 + (0 * d)
Min Squares Analysis
========
-- Extrinsic Time --
Data points distribution:
d mean µs sigma µs %
0 46.56 0.626 1.3%
10 57.11 0.323 0.5%
20 59.01 0.422 0.7%
31 64.27 0.762 1.1%
41 68.07 0.782 1.1%
52 70.15 0.524 0.7%
62 78.2 1.135 1.4%
73 82.83 1.381 1.6%
83 85.83 1.098 1.2%
94 89.7 0.764 0.8%
104 93.3 1.962 2.1%
114 96.95 1.357 1.3%
125 101.6 1.787 1.7%
135 106.2 2.221 2.0%
146 104.3 0.895 0.8%
156 106.1 1.1 1.0%
167 109.2 0.679 0.6%
177 114.6 1.455 1.2%
188 115.6 0.632 0.5%
198 119 0.909 0.7%
208 121.2 0.567 0.4%
219 125.8 1.986 1.5%
229 129.7 1.104 0.8%
240 133.4 0.832 0.6%
250 134.7 0.325 0.2%
261 143.9 1.229 0.8%
271 144.5 0.869 0.6%
282 147.8 0.708 0.4%
292 150.9 0.685 0.4%
303 155.8 1.515 0.9%
313 156.9 0.477 0.3%
323 162.3 1.477 0.9%
334 166.4 0.931 0.5%
344 166.8 0.989 0.5%
355 176.7 3.961 2.2%
365 177.4 1.906 1.0%
376 179.8 2.069 1.1%
386 183 1.595 0.8%
397 187.3 2.533 1.3%
407 189.7 2.171 1.1%
417 192.7 3.52 1.8%
428 195.5 1.55 0.7%
438 200 3.429 1.7%
449 203.4 3.377 1.6%
459 206.8 2.742 1.3%
470 208.6 2.559 1.2%
480 210 1.666 0.7%
491 215.8 1.998 0.9%
501 220.2 2.508 1.1%
512 220.3 1.692 0.7%
Quality and confidence:
param error
d 0
Model:
Time ~= 55.71
+ d 0.328
µs
Reads = 0 + (0 * d)
Writes = 0 + (0 * d)
Recorded proof Size = 0 + (0 * d)
Pallet: "pallet_gear", Extrinsic: "instantiate_module_global_section_per_kb", Lowest values: [], Highest values: [], Steps: 50, Repeat: 20
Raw Storage Info
========
Median Slopes Analysis
========
-- Extrinsic Time --
Model:
Time ~= 38.29
+ c 1.264
µs
Reads = 0 + (0 * c)
Writes = 0 + (0 * c)
Recorded proof Size = 0 + (0 * c)
Min Squares Analysis
========
-- Extrinsic Time --
Data points distribution:
c mean µs sigma µs %
0 37.2 0.83 2.2%
10 51.87 1.527 2.9%
20 65.25 1.223 1.8%
31 81.44 2.572 3.1%
41 92.71 1.291 1.3%
52 106.1 1.341 1.2%
62 118.6 1.642 1.3%
73 137 2.462 1.7%
83 147.7 1.863 1.2%
94 157.1 1.387 0.8%
104 173.6 2.238 1.2%
114 186.5 4.014 2.1%
125 194.8 0.932 0.4%
135 207.2 1.216 0.5%
146 220.3 0.743 0.3%
156 232.1 0.901 0.3%
167 245.4 1.242 0.5%
177 258.4 1.26 0.4%
188 272.9 0.977 0.3%
198 285.9 1.371 0.4%
208 304 3.731 1.2%
219 317.4 1.603 0.5%
229 324.7 1.974 0.6%
240 338.1 1.237 0.3%
250 349.2 1.077 0.3%
261 365.1 1.363 0.3%
271 372.9 1.549 0.4%
282 391.2 1.351 0.3%
292 404.8 2.851 0.7%
303 416.1 1.927 0.4%
313 427 1.577 0.3%
323 443.8 1.88 0.4%
334 455.4 2.549 0.5%
344 476 7.331 1.5%
355 480.5 1.955 0.4%
365 494.8 3.102 0.6%
376 508.4 1.211 0.2%
386 544 4.703 0.8%
397 529.3 1.235 0.2%
407 553 3.069 0.5%
417 570.4 1.676 0.2%
428 582.3 3.009 0.5%
438 593.2 2.261 0.3%
449 601.4 1.32 0.2%
459 628.1 3.103 0.4%
470 653.7 3.232 0.4%
480 659.1 3.308 0.5%
491 663.9 1.433 0.2%
501 688.6 4.378 0.6%
512 699.3 1.86 0.2%
Quality and confidence:
param error
c 0.002
Model:
Time ~= 36.22
+ c 1.275
µs
Reads = 0 + (0 * c)
Writes = 0 + (0 * c)
Recorded proof Size = 0 + (0 * c)
Pallet: "pallet_gear", Extrinsic: "instantiate_module_table_section_per_kb", Lowest values: [], Highest values: [], Steps: 50, Repeat: 20
Raw Storage Info
========
Median Slopes Analysis
========
-- Extrinsic Time --
Model:
Time ~= 34.77
+ t 4.212
µs
Reads = 0 + (0 * t)
Writes = 0 + (0 * t)
Recorded proof Size = 0 + (0 * t)
Min Squares Analysis
========
-- Extrinsic Time --
Data points distribution:
t mean µs sigma µs %
0 37.35 0.672 1.7%
10 80.97 1.451 1.7%
20 124.4 0.492 0.3%
31 173.4 0.785 0.4%
41 214.8 0.529 0.2%
52 263.7 2.562 0.9%
62 304.2 0.559 0.1%
73 353.4 1.125 0.3%
83 394.8 1.177 0.2%
94 425.6 1.03 0.2%
104 467.3 2.126 0.4%
114 511.2 1.274 0.2%
125 554.8 0.841 0.1%
135 598.5 2.235 0.3%
146 642 0.991 0.1%
156 685.4 1.421 0.2%
167 730.8 1.555 0.2%
177 775.6 3.275 0.4%
188 816.3 1.69 0.2%
198 860.7 1.957 0.2%
208 904.4 2.551 0.2%
219 951.5 4.534 0.4%
229 1000 3.868 0.3%
240 1046 3.725 0.3%
250 1089 4.882 0.4%
261 1140 3.592 0.3%
271 1179 4.031 0.3%
282 1220 3.089 0.2%
292 1261 2.282 0.1%
303 1306 3.239 0.2%
313 1351 4.205 0.3%
323 1392 3.498 0.2%
334 1437 2.953 0.2%
344 1479 2.983 0.2%
355 1525 2.464 0.1%
365 1566 1.727 0.1%
376 1615 4.276 0.2%
386 1655 3.979 0.2%
397 1707 4.414 0.2%
407 1747 5.558 0.3%
417 1790 8.061 0.4%
428 1838 7.011 0.3%
438 1884 5.253 0.2%
449 1998 13.2 0.6%
459 1996 4.375 0.2%
470 2026 2.702 0.1%
480 2058 4.714 0.2%
491 2107 5.531 0.2%
501 2146 8.024 0.3%
512 2194 7.788 0.3%
Quality and confidence:
param error
t 0.003
Model:
Time ~= 32.82
+ t 4.226
µs
Reads = 0 + (0 * t)
Writes = 0 + (0 * t)
Recorded proof Size = 0 + (0 * t)
Pallet: "pallet_gear", Extrinsic: "instantiate_module_type_section_per_kb", Lowest values: [], Highest values: [], Steps: 50, Repeat: 20
Raw Storage Info
========
Median Slopes Analysis
========
-- Extrinsic Time --
Model:
Time ~= 39.26
+ y 0.112
µs
Reads = 0 + (0 * y)
Writes = 0 + (0 * y)
Recorded proof Size = 0 + (0 * y)
Min Squares Analysis
========
-- Extrinsic Time --
Data points distribution:
y mean µs sigma µs %
0 35.56 0.211 0.5%
10 36.88 0.588 1.5%
20 38.63 0.953 2.4%
31 41.82 1.853 4.4%
41 40.87 0.551 1.3%
52 42.53 0.601 1.4%
62 44.96 1.262 2.8%
73 44.61 0.435 0.9%
83 47.09 1.005 2.1%
94 46.81 0.93 1.9%
104 49.57 0.566 1.1%
114 50.52 0.602 1.1%
125 50.97 0.447 0.8%
135 51.15 1.387 2.7%
146 57.47 1.187 2.0%
156 55.34 1.894 3.4%
167 62.22 0.888 1.4%
177 60.7 1.656 2.7%
188 63.4 1.422 2.2%
198 64.68 0.756 1.1%
208 64.96 0.486 0.7%
219 66.17 0.366 0.5%
229 67.34 1.133 1.6%
240 67.99 1.412 2.0%
250 69.09 1.156 1.6%
261 69.36 0.555 0.8%
271 85.28 3.426 4.0%
282 71.86 0.826 1.1%
292 73.77 1.383 1.8%
303 75.08 1.314 1.7%
313 77.06 1.851 2.4%
323 78.2 1.772 2.2%
334 85.26 2.682 3.1%
344 100.9 20.73 20.5%
355 81.49 2.44 2.9%
365 80.49 1.923 2.3%
376 80.74 0.553 0.6%
386 81.09 0.766 0.9%
397 87.41 1.36 1.5%
407 83.49 1.307 1.5%
417 87.9 1.3 1.4%
428 86.66 0.656 0.7%
438 82.61 1.095 1.3%
449 91.3 1.676 1.8%
459 86.62 1.05 1.2%
470 83.51 0.492 0.5%
480 85.48 1.158 1.3%
491 89.25 2.738 3.0%
501 86.67 1.537 1.7%
512 85.95 1.196 1.3%
Quality and confidence:
param error
y 0.001
Model:
Time ~= 39.77
+ y 0.11
µs
Reads = 0 + (0 * y)
Writes = 0 + (0 * y)
Recorded proof Size = 0 + (0 * y)
Test measurement run
Pallet: "pallet_gear", Extrinsic: "instantiate_module_code_section_per_kb", Lowest values: [], Highest values: [], Steps: 50, Repeat: 20
Raw Storage Info
========
Median Slopes Analysis
========
-- Extrinsic Time --
Model:
Time ~= 35.14
+ c 0.075
µs
Reads = 0 + (0 * c)
Writes = 0 + (0 * c)
Recorded proof Size = 0 + (0 * c)
Min Squares Analysis
========
-- Extrinsic Time --
Data points distribution:
c mean µs sigma µs %
0 34.06 0.336 0.9%
10 36.59 0.166 0.4%
20 37.94 0.369 0.9%
31 38.02 0.202 0.5%
41 38.63 0.378 0.9%
52 40.08 0.866 2.1%
62 40.52 1.203 2.9%
73 40.07 0.33 0.8%
83 40.18 0.22 0.5%
94 43.06 0.826 1.9%
104 43.48 1.064 2.4%
114 44.47 1.296 2.9%
125 44.58 0.52 1.1%
135 46.47 1.086 2.3%
146 46.61 1.099 2.3%
156 47.46 1.592 3.3%
167 48.95 1.711 3.4%
177 48.56 0.811 1.6%
188 49.33 1.269 2.5%
198 49.45 0.656 1.3%
208 49.88 0.448 0.8%
219 51.34 0.559 1.0%
229 50.56 0.178 0.3%
240 52.32 0.466 0.8%
250 52.7 0.552 1.0%
261 54.32 0.883 1.6%
271 54.3 0.638 1.1%
282 55.66 0.86 1.5%
292 55.83 0.714 1.2%
303 56.9 0.431 0.7%
313 59.41 1.389 2.3%
323 60.34 1.638 2.7%
334 61.56 1.021 1.6%
344 59.57 0.299 0.5%
355 60.2 0.684 1.1%
365 63.97 1.096 1.7%
376 64.44 1.099 1.7%
386 65.54 1.086 1.6%
397 65.29 0.55 0.8%
407 65.92 0.881 1.3%
417 68.46 0.549 0.8%
428 69 0.809 1.1%
438 67.69 0.492 0.7%
449 68.59 0.247 0.3%
459 69.18 0.605 0.8%
470 70.03 0.739 1.0%
480 72.28 0.778 1.0%
491 73.27 1.279 1.7%
501 73.15 0.978 1.3%
512 73.42 0.354 0.4%
Quality and confidence:
param error
c 0
Model:
Time ~= 35.23
+ c 0.075
µs
Reads = 0 + (0 * c)
Writes = 0 + (0 * c)
Recorded proof Size = 0 + (0 * c)
Pallet: "pallet_gear", Extrinsic: "instantiate_module_data_section_per_kb", Lowest values: [], Highest values: [], Steps: 50, Repeat: 20
Raw Storage Info
========
Median Slopes Analysis
========
-- Extrinsic Time --
Model:
Time ~= 48.9
+ d 0.192
µs
Reads = 0 + (0 * d)
Writes = 0 + (0 * d)
Recorded proof Size = 0 + (0 * d)
Min Squares Analysis
========
-- Extrinsic Time --
Data points distribution:
d mean µs sigma µs %
0 44.66 0.793 1.7%
10 48.88 0.977 1.9%
20 51.07 0.729 1.4%
31 53.14 0.57 1.0%
41 55.06 0.175 0.3%
52 57.85 0.609 1.0%
62 60.03 0.514 0.8%
73 62.42 0.767 1.2%
83 64.56 0.318 0.4%
94 65.98 0.781 1.1%
104 67.76 0.893 1.3%
114 70.9 0.64 0.9%
125 72.49 0.366 0.5%
135 77.82 1.349 1.7%
146 78.15 0.287 0.3%
156 80.04 0.627 0.7%
167 83.98 0.854 1.0%
177 82.87 0.587 0.7%
188 86.25 0.641 0.7%
198 87.43 0.52 0.5%
208 89.6 0.76 0.8%
219 91.62 0.286 0.3%
229 94.08 0.498 0.5%
240 94.63 0.466 0.4%
250 97.7 0.877 0.8%
261 102.2 0.459 0.4%
271 103 1.102 1.0%
282 102.8 0.404 0.3%
292 104.9 0.64 0.6%
303 106.9 0.566 0.5%
313 108.7 0.525 0.4%
323 110.9 0.93 0.8%
334 114 0.816 0.7%
344 114.2 0.737 0.6%
355 117.9 1.646 1.3%
365 119.2 0.897 0.7%
376 119.2 0.546 0.4%
386 123.3 0.619 0.5%
397 125.8 1.266 1.0%
407 126.6 0.524 0.4%
417 130.1 1.426 1.0%
428 130 0.68 0.5%
438 132.4 0.74 0.5%
449 135.4 0.729 0.5%
459 137 0.575 0.4%
470 140.6 2.378 1.6%
480 136.6 0.567 0.4%
491 140.8 0.866 0.6%
501 142.7 0.658 0.4%
512 144.4 1.506 1.0%
Quality and confidence:
param error
d 0
Model:
Time ~= 48.74
+ d 0.191
µs
Reads = 0 + (0 * d)
Writes = 0 + (0 * d)
Recorded proof Size = 0 + (0 * d)
Pallet: "pallet_gear", Extrinsic: "instantiate_module_global_section_per_kb", Lowest values: [], Highest values: [], Steps: 50, Repeat: 20
Raw Storage Info
========
Median Slopes Analysis
========
-- Extrinsic Time --
Model:
Time ~= 48.8
+ c 1.191
µs
Reads = 0 + (0 * c)
Writes = 0 + (0 * c)
Recorded proof Size = 0 + (0 * c)
Min Squares Analysis
========
-- Extrinsic Time --
Data points distribution:
c mean µs sigma µs %
0 33.75 0.173 0.5%
10 49.56 0.942 1.9%
20 63.25 0.392 0.6%
31 78.36 0.277 0.3%
41 91.8 0.601 0.6%
52 105.6 0.697 0.6%
62 119 0.515 0.4%
73 133.3 0.639 0.4%
83 146.6 0.524 0.3%
94 160.5 1.012 0.6%
104 173.5 1.129 0.6%
114 185.8 0.772 0.4%
125 202 1.206 0.5%
135 213.1 0.744 0.3%
146 231.3 2.701 1.1%
156 242.6 1.762 0.7%
167 258.8 1.232 0.4%
177 271 1.498 0.5%
188 283.8 1.391 0.4%
198 295.9 1.295 0.4%
208 312.1 1.966 0.6%
219 323.4 2.102 0.6%
229 344.8 3.363 0.9%
240 352.2 1.879 0.5%
250 366.7 1.333 0.3%
261 387.3 2.489 0.6%
271 397.5 3.117 0.7%
282 382 3.607 0.9%
292 390.5 2.354 0.6%
303 407.7 2.586 0.6%
313 415.3 0.993 0.2%
323 431.4 1.26 0.2%
334 441.6 3.576 0.8%
344 448.9 1.942 0.4%
355 465.1 2.116 0.4%
365 477 3.056 0.6%
376 494.1 3.413 0.6%
386 505.3 1.888 0.3%
397 521.1 2.148 0.4%
407 528.1 2.997 0.5%
417 540 2.699 0.4%
428 555.5 3.509 0.6%
438 568.6 4.148 0.7%
449 576.5 1.952 0.3%
459 596.7 2.36 0.3%
470 606.1 3.098 0.5%
480 622.5 3.157 0.5%
491 625 4.523 0.7%
501 643.8 5.707 0.8%
512 654.4 4.764 0.7%
Quality and confidence:
param error
c 0.003
Model:
Time ~= 51.35
+ c 1.186
µs
Reads = 0 + (0 * c)
Writes = 0 + (0 * c)
Recorded proof Size = 0 + (0 * c)
Pallet: "pallet_gear", Extrinsic: "instantiate_module_table_section_per_kb", Lowest values: [], Highest values: [], Steps: 50, Repeat: 20
Raw Storage Info
========
Median Slopes Analysis
========
-- Extrinsic Time --
Model:
Time ~= 38.43
+ t 4.12
µs
Reads = 0 + (0 * t)
Writes = 0 + (0 * t)
Recorded proof Size = 0 + (0 * t)
Min Squares Analysis
========
-- Extrinsic Time --
Data points distribution:
t mean µs sigma µs %
0 32.52 0.143 0.4%
10 75.07 0.217 0.2%
20 116.7 0.267 0.2%
31 163.1 1.381 0.8%
41 203.1 0.318 0.1%
52 249.1 0.445 0.1%
62 290.2 0.453 0.1%
73 336.2 0.802 0.2%
83 384.7 1.262 0.3%
94 431.7 3.006 0.6%
104 471.7 3.007 0.6%
114 508.3 1.355 0.2%
125 556.2 1.587 0.2%
135 602 1.556 0.2%
146 644.7 2.375 0.3%
156 689.2 2.438 0.3%
167 730.8 1.733 0.2%
177 771.9 1.673 0.2%
188 817.3 5.137 0.6%
198 864.8 3.316 0.3%
208 901 1.842 0.2%
219 950 2.3 0.2%
229 995.5 1.762 0.1%
240 1018 3.13 0.3%
250 1053 1.369 0.1%
261 1097 1.549 0.1%
271 1157 2.674 0.2%
282 1205 1.779 0.1%
292 1247 2.806 0.2%
303 1282 1.164 0.0%
313 1324 1.656 0.1%
323 1362 0.888 0.0%
334 1409 1.448 0.1%
344 1451 2.979 0.2%
355 1495 1.392 0.0%
365 1539 3.146 0.2%
376 1590 2.923 0.1%
386 1634 2.284 0.1%
397 1682 2.869 0.1%
407 1729 5.371 0.3%
417 1764 2.05 0.1%
428 1801 2.427 0.1%
438 1843 4.134 0.2%
449 1886 1.376 0.0%
459 1925 1.57 0.0%
470 1973 1.312 0.0%
480 2014 0.984 0.0%
491 2059 2.342 0.1%
501 2096 1.244 0.0%
512 2146 5.114 0.2%
Quality and confidence:
param error
t 0.002
Model:
Time ~= 39.08
+ t 4.119
µs
Reads = 0 + (0 * t)
Writes = 0 + (0 * t)
Recorded proof Size = 0 + (0 * t)
Pallet: "pallet_gear", Extrinsic: "instantiate_module_type_section_per_kb", Lowest values: [], Highest values: [], Steps: 50, Repeat: 20
Raw Storage Info
========
Median Slopes Analysis
========
-- Extrinsic Time --
Model:
Time ~= 35.19
+ y 0.099
µs
Reads = 0 + (0 * y)
Writes = 0 + (0 * y)
Recorded proof Size = 0 + (0 * y)
Min Squares Analysis
========
-- Extrinsic Time --
Data points distribution:
y mean µs sigma µs %
0 32.68 0.164 0.5%
10 33.78 0.119 0.3%
20 35.81 0.446 1.2%
31 37.02 0.203 0.5%
41 38.89 0.835 2.1%
52 39.05 0.175 0.4%
62 42.55 0.909 2.1%
73 42.81 0.908 2.1%
83 44.71 1.352 3.0%
94 44.57 1.114 2.4%
104 48.18 0.579 1.2%
114 46.05 0.774 1.6%
125 47.59 0.806 1.6%
135 48.16 0.29 0.6%
146 49.46 0.438 0.8%
156 50.36 0.335 0.6%
167 51.72 0.203 0.3%
177 59.78 0.973 1.6%
188 56.72 0.379 0.6%
198 61.59 0.464 0.7%
208 54.76 0.283 0.5%
219 55.4 0.399 0.7%
229 60.12 0.611 1.0%
240 60.76 0.517 0.8%
250 60.74 0.411 0.6%
261 61.53 1.586 2.5%
271 62.64 1.368 2.1%
282 65.11 0.982 1.5%
292 61.54 0.942 1.5%
303 62.36 0.486 0.7%
313 64.37 0.933 1.4%
323 64.65 0.55 0.8%
334 69.95 3.4 4.8%
344 75.86 3.035 4.0%
355 76.2 0.699 0.9%
365 77.87 0.715 0.9%
376 76.78 1.801 2.3%
386 75.45 0.991 1.3%
397 78.95 2.048 2.5%
407 78.23 1.978 2.5%
417 80.02 1.712 2.1%
428 81.61 2.805 3.4%
438 73.8 0.47 0.6%
449 78.11 1.04 1.3%
459 79.02 0.985 1.2%
470 81.23 1.555 1.9%
480 80.53 0.77 0.9%
491 81.94 0.487 0.5%
501 82.72 0.467 0.5%
512 84.19 0.873 1.0%
Quality and confidence:
param error
y 0
Model:
Time ~= 35.53
+ y 0.1
µs
Reads = 0 + (0 * y)
Writes = 0 + (0 * y)
Recorded proof Size = 0 + (0 * y)
Created file: "./target/weights.json"
ByteNacked commented
For this investigation, three additional benches were added to estimate the approximate instantiation weight of sections:
- Global
- Table (with elements)
- Type
Bench results
The table summarize result of several subsequent runs on reference bench machine.
| section | weight in micro sec |
|---|---|
| code | 0.3 |
| data | 0.54 |
| global | 2.7 |
| table | 19.0 |
| type | 0.4 |
Global
As bench results show, the weight of the global section is quite high at 2.7. However, due to the low number of global segments in an average wasm module (max 4 global segments according to the dapps/contracts repo).
Table (with elements)
As bench results show, the weight of the table section (with elements) is high at 19.0.
This is likely due to additional memory allocation for the table and initialization of its elements (memcpy).
In theory it should be similar to data section instantiation weight, expect the fact what data section instantiation doesn't allocates memory.
It's probably better to charge for the instantiation of the table section separately because the table could have an arbitrary size, and as a result, it could be abused.
Type section
The weight of the types section should be comparable to, or close to, the weight of code section instantiation, because no heavy work should be done during the instantiation of these sections, nor memory copying or allocation.
As the benchmark results show, the types weight is 0.4 (for comparison, the code weight is 0.3).
Summary
For the instantiation of global and table sections, we should charge separately. Additionally, it may be necessary to limit the number of segments in these sections.
For the type section, it's probably better not to charge separately but to charge it as part of the code section (code size).