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1HISTORY of the 7-Zip source code 1HISTORY of the 7-Zip source code
2-------------------------------- 2--------------------------------
3 3
425.00 2025-07-05
5-------------------------
6- 7-Zip for Windows can now use more than 64 CPU threads for compression
7 to zip/7z/xz archives and for the 7-Zip benchmark.
8 If there are more than one processor group in Windows (on systems with more than
9 64 cpu threads), 7-Zip distributes running CPU threads across different processor groups.
10- bzip2 compression speed was increased by 15-40%.
11- deflate (zip/gz) compression speed was increased by 1-3%.
12- improved support for zip, cpio and fat archives.
13- fixed some bugs and vulnerabilities.
14
15
424.09 2024-11-29 1624.09 2024-11-29
5------------------------- 17-------------------------
6- The default dictionary size values for LZMA/LZMA2 compression methods were increased: 18- The default dictionary size values for LZMA/LZMA2 compression methods were increased: