Bug#655185: RFP: pxz -- parallel xz compressor
On Mon, Jan 09, 2012 at 01:54:10PM -0600, Jonathan Nieder wrote:
> > According to the xz man-page in Debian Stable (5.0.0) as well as
> > Unstable (5.1.1alpha), the --threads option is still non-functional:
> > "Multithreaded compression and decompression are not implemented yet,
> > so this option has no effect for now."
> > But you sound as if that is already implemented. So maybe the man-page
> > is just out-of-date?
> As the changelog says:
> - Continue to leave out threading support, since the relevant
> interfaces in liblzma are not yet stable.
Ah, while I thought it may be an compile option this didn't fit to the
way it was mentioned in the man-page, so I neither checked
debian/rules nor debian/changelog.
> I'd be happy to prepare an upload enabling threading for experimental,
> though. (Please feel free to file a bug as a reminder.) And to ask
> Larhzu what's left to be done in order to release. :)
Well, actually, I don't mind _how_ I get parallel xz support. The main
point is get a program that offers it. (Actually I'd need a backport
to stable. ;-) (Cc'ing the original RFP again because of this and the
Another option would be to use this hack called ChopZip which
actually chops the to be compressed file in parts and then
concatenates the compressed parts together. Said to work with gzip,
bzip2, lzip and xz.
Anyway, thanks for all the informative mails about xz and talking to
upstreams to check the state of their collaboration.
Kind regards, Axel
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