Testing the Anticipator:
The idea is we can use a Stopwatch to compare its performance characteristics. I print the result to adb logcat output. We can average the time taken over 10 runs programmatically.
Run the powershell script included via:
.\compare.ps1 -anticipator $true -configuration Debug
.\compare.ps1 -anticipator $false -configuration Debug
.\compare.ps1 -anticipator $true -configuration Release
.\compare.ps1 -anticipator $false -configuration Release
There are other options in the script as well.
My general conclusion is the Anticipator has slightly worse performance when the intent was to improve it.
HAXM emulator (Debug):
> .\compare.ps1 -anticipator $true -configuration Debug
12-11 08:57:25.508 21971 21971 D GREPME : 131
12-11 08:57:29.677 22025 22025 D GREPME : 131
12-11 08:57:33.799 22098 22098 D GREPME : 142
12-11 08:57:37.925 22150 22150 D GREPME : 137
12-11 08:57:42.028 22206 22206 D GREPME : 128
12-11 08:57:46.173 22259 22259 D GREPME : 159
12-11 08:57:50.236 22312 22312 D GREPME : 127
12-11 08:57:54.431 22365 22365 D GREPME : 176
12-11 08:57:58.485 22419 22419 D GREPME : 132
12-11 08:58:02.660 22471 22471 D GREPME : 137
12-11 08:58:06.757 22524 22524 D GREPME : 154
Average: 141.272727272727
> .\compare.ps1 -anticipator $false -configuration Debug
12-11 08:58:58.540 22702 22702 D GREPME : 109
12-11 08:59:02.635 22753 22753 D GREPME : 110
12-11 08:59:06.740 22804 22804 D GREPME : 103
12-11 08:59:10.919 22857 22857 D GREPME : 110
12-11 08:59:15.024 22909 22909 D GREPME : 109
12-11 08:59:19.141 22962 22962 D GREPME : 107
12-11 08:59:23.273 23010 23010 D GREPME : 105
12-11 08:59:27.400 23061 23061 D GREPME : 104
12-11 08:59:31.497 23109 23109 D GREPME : 112
12-11 08:59:35.632 23161 23161 D GREPME : 109
12-11 08:59:39.727 23212 23212 D GREPME : 112
Average: 108.181818181818
HAXM emulator (Release):
> .\compare.ps1 -anticipator $true -configuration Release
12-11 09:00:31.761 23402 23402 D GREPME : 82
12-11 09:00:35.885 23453 23453 D GREPME : 84
12-11 09:00:40.022 23505 23505 D GREPME : 83
12-11 09:00:44.160 23558 23558 D GREPME : 92
12-11 09:00:48.353 23609 23609 D GREPME : 103
12-11 09:00:52.422 23660 23660 D GREPME : 90
12-11 09:00:56.557 23708 23708 D GREPME : 81
12-11 09:01:00.737 23762 23762 D GREPME : 83
12-11 09:01:04.855 23814 23814 D GREPME : 79
12-11 09:01:08.944 23865 23865 D GREPME : 83
12-11 09:01:13.103 23915 23915 D GREPME : 88
Average: 86.1818181818182
> .\compare.ps1 -anticipator $false -configuration Release
12-11 09:01:53.967 24126 24126 D GREPME : 62
12-11 09:01:58.076 24177 24177 D GREPME : 63
12-11 09:02:02.223 24229 24229 D GREPME : 62
12-11 09:02:06.454 24280 24280 D GREPME : 69
12-11 09:02:10.479 24329 24329 D GREPME : 66
12-11 09:02:14.582 24377 24377 D GREPME : 66
12-11 09:02:18.708 24424 24424 D GREPME : 68
12-11 09:02:22.845 24471 24471 D GREPME : 61
12-11 09:02:26.979 24523 24523 D GREPME : 59
12-11 09:02:31.143 24572 24572 D GREPME : 61
12-11 09:02:35.203 24618 24618 D GREPME : 62
Average: 63.5454545454545
Pixel 3 XL (Debug):
> .\compare.ps1 -anticipator $true -configuration Debug
12-11 09:08:26.120 4849 4849 D GREPME : 100
12-11 09:08:30.373 4914 4914 D GREPME : 100
12-11 09:08:34.686 4985 4985 D GREPME : 101
12-11 09:08:38.981 5062 5062 D GREPME : 111
12-11 09:08:43.242 5133 5133 D GREPME : 101
12-11 09:08:47.555 5200 5200 D GREPME : 100
12-11 09:08:51.814 5266 5266 D GREPME : 101
12-11 09:08:56.054 5343 5343 D GREPME : 102
12-11 09:09:00.337 5413 5413 D GREPME : 101
12-11 09:09:04.590 5481 5481 D GREPME : 100
12-11 09:09:08.832 5554 5554 D GREPME : 100
Average: 101.545454545455
> .\compare.ps1 -anticipator $false -configuration Debug
12-11 09:09:43.340 5845 5845 D GREPME : 93
12-11 09:09:47.586 5911 5911 D GREPME : 97
12-11 09:09:51.822 5979 5979 D GREPME : 93
12-11 09:09:56.102 6041 6041 D GREPME : 92
12-11 09:10:00.376 6097 6097 D GREPME : 93
12-11 09:10:04.664 6156 6156 D GREPME : 93
12-11 09:10:08.916 6214 6214 D GREPME : 93
12-11 09:10:13.160 6269 6269 D GREPME : 93
12-11 09:10:17.453 6331 6331 D GREPME : 93
12-11 09:10:21.726 6396 6396 D GREPME : 92
12-11 09:10:25.963 6450 6450 D GREPME : 93
Average: 93.1818181818182
Pixel 3 XL (Release):
> .\compare.ps1 -anticipator $true -configuration Release
12-11 09:11:16.966 6675 6675 D GREPME : 45
12-11 09:11:21.227 6734 6734 D GREPME : 45
12-11 09:11:25.497 6795 6795 D GREPME : 48
12-11 09:11:29.775 6865 6865 D GREPME : 47
12-11 09:11:34.019 6931 6931 D GREPME : 45
12-11 09:11:38.302 6992 6992 D GREPME : 46
12-11 09:11:42.549 7052 7052 D GREPME : 46
12-11 09:11:46.825 7111 7111 D GREPME : 46
12-11 09:11:51.078 7172 7172 D GREPME : 46
12-11 09:11:55.323 7232 7232 D GREPME : 44
12-11 09:11:59.598 7291 7291 D GREPME : 46
Average: 45.8181818181818
> .\compare.ps1 -anticipator $false -configuration Release
12-11 09:12:37.602 7498 7498 D GREPME : 38
12-11 09:12:41.847 7551 7551 D GREPME : 38
12-11 09:12:46.119 7603 7603 D GREPME : 38
12-11 09:12:50.411 7654 7654 D GREPME : 38
12-11 09:12:54.672 7711 7711 D GREPME : 38
12-11 09:12:58.926 7765 7765 D GREPME : 39
12-11 09:13:03.173 7816 7816 D GREPME : 39
12-11 09:13:07.452 7871 7871 D GREPME : 39
12-11 09:13:11.740 7924 7924 D GREPME : 39
12-11 09:13:15.998 7974 7974 D GREPME : 38
12-11 09:13:20.278 8025 8025 D GREPME : 39
Average: 38.4545454545455
Pixel 3 XL (Release+AOT):
> .\compare.ps1 -anticipator $true -configuration Release -extra /p:AotAssemblies=True
12-11 09:52:30.831 9266 9266 D GREPME : 33
12-11 09:52:35.060 9330 9330 D GREPME : 34
12-11 09:52:39.323 9428 9428 D GREPME : 33
12-11 09:52:43.610 9486 9486 D GREPME : 33
12-11 09:52:47.904 9550 9550 D GREPME : 33
12-11 09:52:52.213 9610 9610 D GREPME : 34
12-11 09:52:56.469 9670 9670 D GREPME : 34
12-11 09:53:00.728 9729 9729 D GREPME : 33
12-11 09:53:05.023 9787 9787 D GREPME : 35
12-11 09:53:09.303 9847 9847 D GREPME : 34
12-11 09:53:13.587 9907 9907 D GREPME : 34
Average: 33.636363636363
> .\compare.ps1 -anticipator $false -configuration Release -extra /p:AotAssemblies=True
12-11 09:54:50.942 10135 10135 D GREPME : 30
12-11 09:54:55.240 10188 10188 D GREPME : 30
12-11 09:54:59.536 10238 10238 D GREPME : 30
12-11 09:55:03.818 10288 10288 D GREPME : 30
12-11 09:55:08.058 10339 10339 D GREPME : 30
12-11 09:55:12.320 10392 10392 D GREPME : 30
12-11 09:55:16.607 10444 10444 D GREPME : 36
12-11 09:55:20.799 10574 10574 D GREPME : 30
12-11 09:55:25.040 10626 10626 D GREPME : 30
12-11 09:55:29.305 10685 10685 D GREPME : 30
12-11 09:55:33.585 10738 10738 D GREPME : 30
Average: 30.5454545454545