Parallel decompression of gzip-compressed files
arxiv.org
arxiv.org
From the readme:
"Contrary to the pigz program which does single-threaded decompression (see https://github.com/madler/pigz/blob/master/pigz.c#L232), pugz found a way to do truly parallel decompression. In a nutshell: the compressed file is splitted into consecutive sections, processed one after the other. Sections are in turn splitted into chunks (one chunk per thread) and will be decompressed in parallel. A first pass decompresses chunks and keeps track of back-references (see e.g. our paper for the definition of that term), but is unable to resolve them. Then, a quick sequential pass is done to resolve the contexts of all chunks. A final parallel pass translates all unresolved back-references and outputs the file."