Is it possible to speed up archiving/unarchiving by parallelization??

Question

Data archiving

As far as I know, archiving / unzipping can often run into HDD / SSD, so I wondered if performance would increase if the standard algorithm for zip was changed so that archiving / unzipping could be done in parallel?

Answer 1

7z started supporting multiprocessing of archives ten years ago. Its own algorithm is heavier than zip, but it can also unpack zips.
7z -mmt={number of threads}

Answer 2

7-zip has an option to manage multithreading. You can test or even look at the source.

Answer 3

Parallel computing speeds up CPU bound tasks.

Answer 4

pigz is a multithreaded archiver for the gzip algorithm.
winrar and 7zip are also capable of multithreading

Answer 5

If you use a standard compression library (for example, ZLIB), it will be problematic. You need to at least write your own compression with blackjack and multithreading.
However, it is possible to parallelize unzipping and interpreting what is unzipped, and this helps. Checked (wrote the save in a simple block format, packed in ZIP).
Archiving on ZLIB with the highest degree of compression rests not on the SSD, but on the processor. Also checked. For a balance between compression and the rest of the functionality, I set the compression ratio to four.