RZM - A ROLZ based compressor

[78372]

RZM is an old compressor from 2008, but still it sometimes beats lzma in compression ratio.
Original compressor was released here by the author of RAZOR Archiver. The original version doesn't support stdin/stdout.

Anyways, here I present rzm stdio patched version.

I patched and ran only three successful tests, so don't know if it is quite stable or not.

RZM doesn't support files over 2GB and is single threaded so use 4x4:b2047m:rzm to bypass the limit and make it multithreaded.

[danswano]

RZM vs. LOLZ?

[panker1992]

Hello

this is version of rzm a friend made long time ago

and this is how to limit the threadings that arc gives

4x4:t2:b2047m:rzm

where t2 means arc will open 2 instances of rzm at the same time for better control.

DO NOT LET fazip take control of 4x4 algo, only leave arc to it, i presented in the arc.ini how to do it

Enjoy !!

[doofoo24]

@panker1992 are you sure of the arc.ini setting for decompression are :
[External compressor:rzm]
header = 0
packcmd = rzm c nul nul <stdin> <stdout>
unpackcmd = rzm d nul nul <stdin> <stdout>

it compress fine but at decompression using inno i get 'archive header is corrupt'...
could it be 4x4 setting ?
*i use 4x4:t2 in arc.exe not fazip...

[teusma]

doofoo24, make sure there is not any command for the fazip in your arc.ini.

[RamiroCruzo]

Originally Posted by panker1992

Hello

this is version of rzm a friend made long time ago

and this is how to limit the threadings that arc gives

4x4:t2:b2047m:rzm

where t2 means arc will open 2 instances of rzm at the same time for better control.

DO NOT LET fazip take control of 4x4 algo, only leave arc to it, i presented in the arc.ini how to do it

Enjoy !!

*Achooo*

[Andu21]

Originally Posted by panker1992

Hello

this is version of rzm a friend made long time ago

and this is how to limit the threadings that arc gives

4x4:t2:b2047m:rzm

where t2 means arc will open 2 instances of rzm at the same time for better control.

DO NOT LET fazip take control of 4x4 algo, only leave arc to it, i presented in the arc.ini how to do it

Enjoy !!

FreeArc 0.67 (March 15 2014) Creating archive: Data\rzm.bin using 4x4:t1:i0:b256mb:rzm
Memory for compression 512mb, decompression 640mb, cache 1mb
Compressed 3 files, 2,748,284,928 => 1,686,937,213 bytes. Ratio 61.38%
Compression time: cpu 4.45 sec/real 2297.61 sec = 0%. Speed 1.20 mB/s
All OK

I specified 4x4:b2047m:rzm and instead he used 4x4:t1:i0:b256mb:rzm. Also, decompression ends with unarc.exe stopped responding but everything is CRC perfect.