On Sun, Oct 4, 2009 at 10:42 PM, Eric Springer <erikina(a)gmail.com> wrote:
On Mon, Oct 5, 2009 at 5:05 AM, Adam Williamson
<awilliam(a)redhat.com> wrote:
>
> Quick follow-up on this issue: I heard that this part at least has been
> done, and it certainly seems to have done the trick. Delta rebuild
> speeds have increased approx ten-fold here, and are now faster than my
> (pretty quick) download speeds.
Is it possible to do the rebuilds in parallel? I noticed that only one
of my four cores was used. And that on smolt 63% of people have a
dual-core or greater, so it could lead to massive speed-ups as well.
xz is not threaded yet, I did some benchmark on my core i7 systems:
http://193.200.113.196/apache2-default/res
pbzip2 and pigz are threaded (compare them with bzip2 and gzip in the
output to see what kind of speedup is possible).