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ChristopherJam
Registered: Aug 2004
Posts: 1409 |
Nucrunch 0.1
Continuing from the benchmarks WVL posted in Doynamite 1.x:
I dusted off my unfinished nucrunch in December to pack just enough of the second page of Reutastic to give me some workspace for some precalculations. Pity I didn't schedule enough time to pack the entire demo, else it would have been ~90 blocks instead of 190, but I digress. I've spent bits of the past month cleaning up the code, optimizing the packer (mostly by porting it from python to rust :P), and adding reverse direction support.
It's still no more than a component, with an commandline packer and asm decrunch subroutine, but no tools yet for generating an executable from a single commandline. It does at least now support multiple input segments that are unpacked to their destination addresses, and it's also now useable enough to for me to do some benchmarking.
In short, doynamite's ratio looks pretty unbeatable for anything lz based; my ratio's almost identical despite a somewhat different encoding.
Where I can win though is speed at that ratio; nucrunch is usually ten to twenty percent faster. The one exception in the test corpus is 6.bin, where it's 20% slower; not sure why yet.
I've added the times for pucrunch -ffast below for to complete the comparison. Last two columns are nucrunch, and nucrunch -r (the latter decodes in reverse; should be a more useful component for single filers)
If anyone wants to have a play at this stage, poke me and I'll upload some source. Failing that I'll hold off until I at least have something that can make onefilers without any faffing about with relocating the last couple of pages by hand.
filesizes
# bin rle wvl-f wvl-s tc bb pu-f doyna nucru rnucr
- ----- ----- ----- ----- ----- ----- ----- ----- ----- -----
1 11008 8020 4529 4151 4329 3383 3711 3265 3225 3230
2 4973 4314 3532 3309 3423 2648 3005 2512 2498 2490
3 3949 3498 2991 2617 2972 2187 2530 2108 2091 2093
4 7016 6456 4242 4085 4225 3681 3924 3617 3622 3614
5 34760 27647 25781 24895 25210 21306 21182 20405 20447 20516
6 31605 12511 11283 10923 11614 9194 9203 8904 8915 8894
7 20392 17295 12108 11285 11445 9627 9789 9289 9140 9144
8 5713 5407 4179 3916 3936 3251 3656 3132 3165 3187
9 8960 7986 6914 6896 6572 5586 6000 5430 5502 5486
filesize in %
# bin rle wvl-f wvl-s tc bb pu-f doyna nucru rnucr
- ----- ----- ----- ----- ----- ----- ----- ----- ----- -----
1 100 72.9 41.1 37.7 39.3 30.7 33.7 29.7 29.3 29.3
2 100 86.7 71.0 66.5 68.8 53.2 60.4 50.5 50.2 50.1
3 100 88.6 75.7 66.3 75.3 55.4 64.1 53.4 53.0 53.0
4 100 92.0 60.5 58.2 60.2 52.5 55.9 51.6 51.6 51.5
5 100 79.5 74.2 71.6 72.5 61.3 60.9 58.7 58.8 59.0
6 100 39.6 35.7 34.6 36.7 29.1 29.1 28.2 28.2 28.1
7 100 84.8 59.4 55.3 56.1 47.2 48.0 45.6 44.8 44.8
8 100 94.6 73.1 68.5 68.9 56.9 64.0 54.8 55.4 55.8
9 100 89.1 77.2 77.0 73.3 62.3 67.0 60.6 61.4 61.2
number of frames to depack
# bin rle wvl-f wvl-s tc bb pu-f doyna nucru rnucr
- ----- ----- ----- ----- ----- ----- ----- ----- ----- -----
1 0 11 13 14 15 58 54 27 22 22
2 0 5 7 7 9 38 39 17 14 14
3 0 4 6 6 7 28 31 12 10 10
4 0 8 9 9 10 43 51 20 17 18
5 0 36 39 42 59 300 298 119 104 107
6 0 20 25 25 37 126 152 49 59 59
7 0 22 25 26 32 138 139 60 51 52
8 0 6 8 8 10 43 47 18 16 17
9 0 9 12 12 16 73 81 32 28 29
kilobytes output per second
# bin rle wvl-f wvl-s tc bb pu-f doyna nucru rnucr
- ----- ----- ----- ----- ----- ----- ----- ----- ----- -----
1 49.0 41.4 38.5 35.9 9.3 10.0 20.0 24.5 24.5
2 48.7 34.8 34.8 27.0 6.4 6.2 14.3 17.4 17.4
3 48.3 32.2 32.2 27.6 6.9 6.2 16.1 19.3 19.3
4 42.9 38.2 38.2 34.3 8.0 6.7 17.2 20.2 19.1
5 47.3 43.6 40.5 28.8 5.7 5.7 14.3 16.4 15.9
6 77.4 61.9 61.9 41.8 12.3 10.2 31.6 26.2 26.2
7 45.4 39.9 38.4 31.2 7.2 7.2 16.6 19.6 19.2
8 46.6 35.0 35.0 28.0 6.5 6.0 15.5 17.5 16.5
9 48.7 36.5 36.5 27.4 6.0 5.4 13.7 15.7 15.1
cycles per byte consumed
# bin rle wvl-f wvl-s tc bb pu-f doyna nucru rnucr
- ----- ----- ----- ----- ----- ----- ----- ----- ----- -----
1 0 27 56 66 68 337 286 163 134 134
2 0 23 39 42 52 282 255 133 110 111
3 0 22 39 45 46 252 241 112 94 94
4 0 24 42 43 47 230 255 109 92 98
5 0 26 30 33 46 277 277 115 100 103
6 0 31 44 45 63 269 325 108 130 130
7 0 25 41 45 55 282 279 127 110 112
8 0 22 38 40 50 260 253 113 99 105
9 0 22 34 34 48 257 265 116 100 104
decrunch time for nucrunch/rnucrunch relative to doynamite
1: 81.5% (-18.5%) 81.5% (-18.5%)
2: 82.4% (-17.6%) 82.4% (-17.6%)
3: 83.3% (-16.7%) 83.3% (-16.7%)
4: 85.0% (-15.0%) 90.0% (-10.0%)
5: 87.4% (-12.6%) 89.9% (-10.1%)
6: 120.4% ( 20.4%) 120.4% ( 20.4%)
7: 85.0% (-15.0%) 86.7% (-13.3%)
8: 88.9% (-11.1%) 94.4% ( -5.6%)
9: 87.5% (-12.5%) 90.6% ( -9.4%)
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ChristopherJam
Registered: Aug 2004
Posts: 1409 |
@Fungus, I'll add that to my todo list, unless someone else gets to it first!
@Oswald well, for the moment the KB per second table should be useful for choosing between crunchers, but I'm planning on adding some tuning parameters to nucrunch nextÂ…
@Bitbreaker Currently around 380 bytes for the standard decruncher/450 for the reverse. But there's some fairly aggressive inlining in there, probably wouldn't lose too much performance if I scale that back a bit.
The plan is to integrate it with marmaload, but my progress on that is pretty glacial at the moment. Should be pretty trivial to replace the 'next page' callback with something that signals a loader/waits for the next page in any case. |
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ChristopherJam
Registered: Aug 2004
Posts: 1409 |
@HCL it's ok, you're still 20% faster than pucrunch -ffast, and that was my go-to until *very* recently :D |
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Bitbreaker
Registered: Oct 2002
Posts: 508 |
Quoting ChristopherJam
@Bitbreaker Currently around 380 bytes for the standard decruncher/450 for the reverse. But there's some fairly aggressive inlining in there, probably wouldn't lose too much performance if I scale that back a bit.
Sounds huge yet, but i'd give a smaller version a try, so mind sharing code? |
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ChristopherJam
Registered: Aug 2004
Posts: 1409 |
Quote: Quoting ChristopherJam
@Bitbreaker Currently around 380 bytes for the standard decruncher/450 for the reverse. But there's some fairly aggressive inlining in there, probably wouldn't lose too much performance if I scale that back a bit.
Sounds huge yet, but i'd give a smaller version a try, so mind sharing code?
OK, I'll bundle something up tomorrow. |
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Kabuto
Account closed
Registered: Sep 2004
Posts: 58 |
Could you please include my ALZ64 packer too? It's an LZMA-based packer, compression is very good, but decompression is very slow yet still acceptable for 4 KB intros, and some of your test cases are in that range :) |
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mankeli
Registered: Oct 2010
Posts: 146 |
Can you add Spindle's cruncher to the list? |
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Fungus
Registered: Sep 2002
Posts: 691 |
HCL: Yours is still best for cracks too, if lots of small files. :) |
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Martin Piper
Registered: Nov 2007
Posts: 726 |
I couldn't find the test files along with the code used to replicate the tests? |
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ChristopherJam
Registered: Aug 2004
Posts: 1409 |
@Martin, I grabbed the test files from LZWVL (bin.rar) |
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Martin Piper
Registered: Nov 2007
Posts: 726 |
Quote: @Martin, I grabbed the test files from LZWVL (bin.rar)
Cheers :)
The number of bytes in the top table, is that the raw file compressed only? No self extracting code? |
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