On Mon, Oct 08, 2012 at 08:38:33AM +0200, Wojciech Puchar wrote: > >>gzip cannot - it is single stream. > > > >gunzip commutes with cat, so gzip > >compression can be multi-threaded > >by compressing separate blocks and > >concatenating the result. > > right. but resulting file format must be different.
Not necessarily. If I understand correctly what Tim means, he's talking about an in-memory compression of several blocks by several separate threads, and then - after all the threads have compressed their respective blocks - writing out the result to the output file in order. Of course, this would incur a small penalty in that the dictionary would not be reused between blocks, but it might still be worth it. G'luck, Peter -- Peter Pentchev r...@ringlet.net r...@freebsd.org pe...@packetscale.com PGP key: http://people.FreeBSD.org/~roam/roam.key.asc Key fingerprint FDBA FD79 C26F 3C51 C95E DF9E ED18 B68D 1619 4553 Hey, out there - is it *you* reading me, or is it someone else?
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