Sam Tansy

7z/lzma2 now is faster than 7z/deflate, It's ≈2 times slower. because 7-Zip can use multi threading for LZMA2. Only when your corpus of data is multiple times bigger than dictionary size and that multiplied by number of threads, which is unlikely to meet these conditions. Also compressing with deflate it could utilise threads by compressing blocks in parallel. Now, these blocks are small (<16 MB by default) which qualifies them for parallel compression even more. BTW, you can enable Deflate by typing...

There is an archive that is corrupted in the bizzare way - two files, in the middle of the block, are corrupted in such way that only random characters are changed but the vast majority of the file is correct and also subsequent files in the block are correct s well. The file is here, and said files are: $ 7z t winlibs-i686-posix-dwarf-gcc-12.3.0-llvm-16.0.4-mingw-w64msvcrt-11.0.0-r1.7z ERROR: CRC Failed : mingw32/include/c++/12.3.0/bits/stl_algobase.h ERROR: CRC Failed : mingw32/include/c++/12.3.0/bits/stl_bvector.h...

Maybe there is `static' somewhere in command line and it interferes with shared linking of shared object. At least that's what can be deducted from web search of relocation R_X86_64_32 against hidden symbol `TMC_END' can not be used when making a shared object.

It's true, but only for compression ratio. Deflate is faster with compression and especially decompression, and that's exactly a reason why one would use it. If you expose bzip2 and, especially, ppmd, then you can equally well add deflate. Users who choose anything else than lzma know what they do, and will appreciate it.

Why there is no deflate compression in 7z file manager for .7z format? It is natively supported in .zip and, de facto, natively in 7z.dll but it cannot be chosen in file manager for .7z format.

I have checked that domain and files they serve/d there, and they are just linking to 7-zip.org executables and not serve any alleged malware. So I don't know where all there accusations come from. Where is that malware everyone talks about? -- Edit: apparently I was outsmarted by these ha, but the web page changes from time to time, and the download links point not to 7-zip.org, but to 7zip.cloud (update.7zip.cloud/7zipInstall.exe[**]). I found two such instances stored in the Wayback Machine[*],...

I have checked that domain and files they serve/d there, and they are just linking to 7-zip.org executables and not serve any alleged malware. So I don't know where all there accusations come from. Where is that malware everyone talks about? -- Edit: apparently I was outsmarted by these ha, but the web page changes from time to time, and the download links point not to 7-zip.org, but to 7zip.cloud (update.7zip.cloud/7zipInstall.exe[**]). I found two such instances stored in the Wayback Machine[*],...

I have checked that domain and files they serve/d there, and they are just linking to 7-zip.org executables and not serve any alleged malware. So I don't know where all there accusations come from. Where is that malware everyone talks about? -- Edit: apparently I was outmasted, but the web page changes from time to time, and the download links point not to 7-zip.org, but to 7zip.cloud (update.7zip.cloud/7zipInstall.exe[**]). I found two such instances stored in the Wayback Machine[*], but there are...