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Re: lzma someone?



Hi Jeff, 

On Thu, 2005-08-25 at 10:13 -0400, Jeff Gilchrist wrote:
> On 8/25/05, Jindrich Novy <jnovy redhat com> wrote:
> 
> > I'm quite sure about this. It's very useful Lempel-Ziv based compression
> > tool. It takes ages to compress anything with it (up to 40 times longer
> > compression times than gzip), but the decompression is pretty fast,
> > because the decompressor design is cache-friendly unlike bzip2, and
> > other Burrows-Wheeler sorting based compressors, that reaches good
> > compression ratios but both compression/decompression takes ages.
> 


> The speed of bzip2 is the reason I wrote pbzip2, a parallel
> impelementation of pbzip2 that achieves near-linear speedup on SMP
> systems. 

Yes, I know pbzip2 from you as well. Good work! I use it frequently as I
need to expand huge bz2 archives because of tetex I maintain.
Fortunately rebuilding it is not such a pain on quad-opteron system
thanks to pbzip2.

I experienced several problems with earlier version though (IIRC 0.9.1),
where I had problems expanding archives compressed by pbzip2 with
different than 900k BWT block size. But this problem is now gone with
the latest pbzip2.

> I just need someone to review my package so it can be included in Fedora Extras.
> 
> BugZilla ID is here: 
> https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=166515
> 

I'll have a look.

Jindrich

-- 
Jindrich Novy <jnovy redhat com>, http://people.redhat.com/jnovy/
(o_                                                           _o)
//\      The worst evil in the world is refusal to think.     //\
V_/_                                                         _\_V



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