7-Zip v. 19.00 / 20.01 alpha - Universalpacker (zip, rar, 7z, bzip2,...) + ThemeMgr

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jasonliul
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Re: 7-Zip v. 19.00 / 19.02alpha - Universalpacker (zip, rar, 7z, bzip2,...) + ThemeMgr

Beitrag von jasonliul » 07.02.20, 12:15

7-Zip 20.00 Alpha
7-Zip now supports new optional match finders for LZMA/LZMA2 compression: bt5 and hc5, that can work faster than bt4 and hc4 match finders for the data with big redundancy.
The compression ratio was improved for Fast and Fastest compression levels with the following default settings:
Fastest level (-mx1) : hc5 match finder with 256 KB dictionary.
Fast level (-mx3) : hc5 match finder with 4 MB dictionary.
Minor speed optimizations in multithreaded LZMA/LZMA2 compression for Normal/Maximum/Ultra compression levels.
bzip2 decoding code was updated to support bzip2 archives, created by lbzip2 program.
Some bugs were fixed.
New localization: Turkmen.
Fortuna fortes juvat.

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jasonliul
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Beiträge: 1538
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Re: 7-Zip v. 19.00 / 20.00 alpha - Universalpacker (zip, rar, 7z, bzip2,...) + ThemeMgr

Beitrag von jasonliul » 06.08.20, 14:51

v 20.01 alpha 2020-08-06
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- The default number of LZMA2 chunks per solid block in 7z archive was increased to 64.
It allows to increase the compression speed for big 7z archives, if there is a big number
of CPU cores and threads.
- The speed of PPMd compressing/decompressing was increased for 7z/ZIP/RAR archives.
- The new -ssp switch. If the switch -ssp is specified, 7-Zip doesn't allow the system
to modify "Last Access Time" property of source files for archiving and hashing operations.
- Some bugs were fixed.
- New localization: Swahili.
Fortuna fortes juvat.

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