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Old 15-04-2019, 08:41
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Smile Z Standard Best Compression Options

I want to know the best option to get better Ratio in compression...with Z standard!

I currently use
ZSTD.exe -22 - - ultra -T16

i need to know,
is there any other option to get better Ratio
Like lolz mc128 - mc1023

Please, I need Help form Who using Z standard...


This info For New Guys!!!

Why i Use Z Standard? Cause
Z standard Compress,
much faster then lolz,
that's why i use it.

For example:
lolz takes 8h to compress 50GB to 18GB.
Z standard takes 1h 50m to compress 50GB to 18.5GB
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Old 15-04-2019, 08:53
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With this option it is even worse then the standard lzma/4x4 option and tooks longer in my tests.
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Old 15-04-2019, 09:44
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zstd:19:T0 That's enough!

I suggest from
Code:
4x4:lzma:a1:mfbt4:32m:fb273:mc10000:lc8
Code:
lolz:d32:tt1:mtt1:mt8:mc2

Last edited by Simorq; 15-04-2019 at 09:47.
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Old 15-04-2019, 10:42
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Here is a old test set from me for comparison.

Code:
lolz:dtb1:mtt1:mt6:d128m:mc1023
Compressed 1 file, 512,039,065 => 174,850,394 bytes. Ratio 34.15%
Compression time: cpu 0.73 sec/real 278.94 sec = 0%. Speed 1.84 mB/s

lzma:a1:mfbt4:d256m:fb273:mc10000:lc8
Compressed 1 file, 512,039,065 => 235,985,799 bytes. Ratio 46.09%
Compression time: cpu 0.81 sec/real 96.79 sec = 1%. Speed 5.29 mB/s

4x4:b64mb:lzma:ultra:64m:bt4:fb273:lc8:mc10000
Compressed 1 file, 512,039,065 => 237,540,041 bytes. Ratio 46.39%
Compression time: cpu 0.69 sec/real 38.33 sec = 2%. Speed 13.36 mB/s

razor:128m
Compressed 1 file, 512,039,065 => 206,659,001 bytes. Ratio 40.36%
Compression time: cpu 1.44 sec/real 528.19 sec = 0%. Speed 0.97 mB/s

zstd -22 --ultra -T2
Compressed 1 file, 512,039,065 => 255,419,289 bytes. Ratio 49.88%
Compression time: cpu 0.70 sec/real 200.09 sec = 0%. Speed 2.56 mB/s
Code:
4x4:b64mb:lzma:ultra:64m:bt4:fb273:lc8:mc10000
Compressed 1 file, 512,039,065 => 237,552,373 bytes. Ratio 46.39%
Compression time: cpu 0.58 sec/real 32.19 sec = 2%. Speed 15.91 mB/s

4x4:lzma:a1:mfbt4:32m:fb273:mc10000:lc8
Compressed 1 file, 512,039,065 => 240,037,512 bytes. Ratio 46.88%
Compression time: cpu 0.58 sec/real 25.33 sec = 2%. Speed 20.21 mB/s
Code:
lolz:d32:tt1:mtt1:mt8:mc2 (pretty fast and only ~2% less ratio then my standard settings. I think this is a good choice. What about decompression speed?)
Compressed 1 file, 512,039,065 => 185,075,365 bytes. Ratio 36.14%
Compression time: cpu 0.56 sec/real 71.90 sec = 1%. Speed 7.12 mB/s

lolz:dtb1:mtt1:mt6:d128m:mc1023
Compressed 1 file, 512,039,065 => 174,726,950 bytes. Ratio 34.12%
Compression time: cpu 0.70 sec/real 279.31 sec = 0%. Speed 1.83 mB/s
Code:
Same as "lolz:d32:tt1:mtt1:mt8:mc2" but with d128
Compressed 1 file, 512,039,065 => 183,759,891 bytes. Ratio 35.89%
Compression time: cpu 0.45 sec/real 92.19 sec = 0%. Speed 5.55 mB/s
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Last edited by KaktoR; 15-04-2019 at 10:57.
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Old 15-04-2019, 11:31
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About the lzma and lolz i know,
thanks to Simorq and KaktoR and doofoo24

Z Standard is New to me,
and ZSTD Comp & Decomp fast,
that's why i like it...

i like to know more about it.
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Old 15-04-2019, 13:47
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Code:
*** zstd command line interface 64-bits v1.3.8, by Yann Collet ***
Usage :
      ZSTD [args] [FILE(s)] [-o file]

FILE    : a filename
          with no FILE, or when FILE is - , read standard input
Arguments :
 -#     : # compression level (1-19, default: 3)
 -d     : decompression
 -D file: use `file` as Dictionary
 -o file: result stored into `file` (only if 1 input file)
 -f     : overwrite output without prompting and (de)compress links
--rm    : remove source file(s) after successful de/compression
 -k     : preserve source file(s) (default)
 -h/-H  : display help/long help and exit

Advanced arguments :
 -V     : display Version number and exit
 -v     : verbose mode; specify multiple times to increase verbosity
 -q     : suppress warnings; specify twice to suppress errors too
 -c     : force write to standard output, even if it is the console
 -l     : print information about zstd compressed files
--ultra : enable levels beyond 19, up to 22 (requires more memory)
--long[=#]: enable long distance matching with given window log (default: 27)
--fast[=#]: switch to ultra fast compression level (default: 1)
--adapt : dynamically adapt compression level to I/O conditions
 -T#    : spawns # compression threads (default: 1, 0==# cores)
 -B#    : select size of each job (default: 0==automatic)
 --rsyncable : compress using a rsync-friendly method (-B sets block size)
--no-dictID : don't write dictID into header (dictionary compression)
--[no-]check : integrity check (default: enabled)
 -r     : operate recursively on directories
--format=zstd : compress files to the .zst format (default)
--format=gzip : compress files to the .gz format
--test  : test compressed file integrity
--[no-]sparse : sparse mode (default: enabled on file, disabled on stdout)
 -M#    : Set a memory usage limit for decompression
--no-progress : do not display the progress bar
--      : All arguments after "--" are treated as files

Dictionary builder :
--train ## : create a dictionary from a training set of files
--train-cover[=k=#,d=#,steps=#,split=#] : use the cover algorithm with optional args
--train-fastcover[=k=#,d=#,f=#,steps=#,split=#,accel=#] : use the fast cover algorithm with optional args
--train-legacy[=s=#] : use the legacy algorithm with selectivity (default: 9)
 -o file : `file` is dictionary name (default: dictionary)
--maxdict=# : limit dictionary to specified size (default: 112640)
--dictID=# : force dictionary ID to specified value (default: random)

Benchmark arguments :
 -b#    : benchmark file(s), using # compression level (default: 3)
 -e#    : test all compression levels from -bX to # (default: 1)
 -i#    : minimum evaluation time in seconds (default: 3s)
 -B#    : cut file into independent blocks of size # (default: no block)
--priority=rt : set process priority to real-time
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Old 15-04-2019, 14:49
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zstd --long is alternative to srep like ldmf in lolz...
i tested --ultra -22 --zstd=wlog=31,clog=30,hlog=30 worst than srep+zstd --ultra -22...
just use zstd --ultra -22 with normal srep:m3f:d1g:a2...

Last edited by doofoo24; 15-04-2019 at 14:53.
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  #8  
Old 18-04-2019, 12:51
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Thanks Simorq, KaktoR, doofoo24

guys i need Z standard Decompressor
x86 & x64 ZSTD version 1.3.7.0 Decompressor..

Please upload it..
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Old 18-04-2019, 19:41
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Quote:
Originally Posted by yasitha View Post
Thanks Simorq, KaktoR, doofoo24

guys i need Z standard Decompressor
x86 & x64 ZSTD version 1.3.7.0 Decompressor..

Please upload it..
Why do you still want to use zstd, when people already posted results with SMALLER size and FASTER decompression with 4x4:lzma?
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Old 18-04-2019, 20:38
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Quote:
Originally Posted by FitGirl View Post
Why do you still want to use zstd, when people already posted results with SMALLER size and FASTER decompression with 4x4:lzma?
Problem is why people still want to use zstd when games themselves are packed using oodle ??
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Old 18-04-2019, 22:42
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I use 90% lolz 10% zstd. ��
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Old 19-04-2019, 08:05
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Code:
-22 --ultra -T1
best compress method for Zstandard i guess
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Old 19-04-2019, 08:33
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Quote:
Originally Posted by st0rm View Post
Code:
-22 --ultra -T1
best compress method for Zstandard i guess
I need decompress exe files

ZSTD.exe (v1.3.7.0) 32bit and 64 bit for decomp

Can u upload it?
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Old 19-04-2019, 08:41
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Zstandard v1.4.0

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Old 19-04-2019, 13:32
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Code:
[External compressor:zstandard]
header    = 0
default   = -22 --ultra -T1
packcmd   = zstd.exe {options} <stdin> <stdout>
unpackcmd = zstd.exe -d -f <stdin> <stdout>
try this for pack and unpack.
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