Git and GCC
Jakub Narebski
jnareb@gmail.com
Fri Dec 7 22:33:00 GMT 2007
Giovanni Bajo <rasky@develer.com> writes:
> On 12/7/2007 6:23 PM, Linus Torvalds wrote:
>
> >> Is SHA a significant portion of the compute during these repacks?
> >> I should run oprofile...
> > SHA1 is almost totally insignificant on x86. It hardly shows up. But
> > we have a good optimized version there.
> > zlib tends to be a lot more noticeable (especially the
> > *uncompression*: it may be faster than compression, but it's done _so_
> > much more that it totally dominates).
>
> Have you considered alternatives, like:
> http://www.oberhumer.com/opensource/ucl/
<quote>
As compared to LZO, the UCL algorithms achieve a better compression
ratio but *decompression* is a little bit slower. See below for some
rough timings.
</quote>
It is uncompression speed that is more important, because it is used
much more often.
--
Jakub Narebski
ShadeHawk on #git
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