Can you include .3MF to the list of re-compressible formats? Its structure is similar to MS Office 2007 documents and Open Document Format. It is a ZIP Deflate archive with XML data and some JPG, and/or PNG pictures inside. Otherwise, if I try to compress .3MF it bearly makes it smaller unless I recompress .3MF to the Store setting then it makes it a lot smaller.
Wish they all would move to 7zip ZSTD in the first place so that the optimized file size with FileOptimizer would be 50% of the ZIP Deflate version. And there would be no extra compression needed :)
I noticed that the option to add the optimize archive function to the context menu is missing on Windows 10.
Opening each archive with the interface in order to click it becomes tedious with many files.
Same for others functions like Remove Archive Encryption
Support for multi-threaded compressing
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Support for multi-threaded compressing is really needed. This will make compressing much faster on dual cpu or dual-core or HT machines.
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Any answer from support team?
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multi-threaded compressing is already implemented, but that is not the same as support for dual core.
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multi-threaded compressing is already implemented, but that is not the same as support for dual core.
But multiple threads should just automatically take advantage of dual core/multi CPU platforms, right? I mean, that’s what multiple CPUs do on WinXP - run multiple threads simultaneously.
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But multiple threads should just automatically take advantage of dual core/multi CPU platforms, right? I mean, that’s what multiple CPUs do on WinXP - run multiple threads simultaneously.
well, conventional multithreading is more like multitasking - it is all about sharing single cpu between multiple threads (for instance, showing progress bar while compressing files).
Dual cpu support is something else, and code has to be written to support it (you have to split the compression threads).
Most modern programs are multithreaded, otherwise they would hog the cpu every time they are run (in this example, progress bar would not be shown).
So yes, you would get some slight speed up with conventional multithreading, but engines have to be rewritten to support multithreading of compression threads which will theoretically double the compression speed.
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Thanks.
Do you working on it? Is it planned to do soon?
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Dual cpu support is something else, and code has to be written to support it (you have to split the compression threads).
multi-threaded compressing is already implemented
Am I misunderstanding this statement - is the compression code split into more than one thread?
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yeah, i was vague, I already wrote better explanation. Can it be done? Probably. Will it be done? I hope so.
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7zip in PA has support for compression multithreading in PA 2006 9.62.
thanks!
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Cool
I hope RAR and ZIP m-t compressing will be supported soon ;)
