Re: Git and GCC

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On Thu, Dec 06, 2007 at 01:47:54AM -0500, Jon Smirl wrote:

> The key to converting repositories of this size is RAM. 4GB minimum,
> more would be better. git-repack is not multi-threaded. There were a
> few attempts at making it multi-threaded but none were too successful.
> If I remember right, with loads of RAM, a repack on a 450MB repository
> was taking about five hours on a 2.8Ghz Core2. But this is something
> you only have to do once for the import. Later repacks will reuse the
> original deltas.

Actually, Nicolas put quite a bit of work into multi-threading the
repack process; the results have been in master for some time, and will
be in the soon-to-be-released v1.5.4.

The downside is that the threading partitions the object space, so the
resulting size is not necessarily as small (but I don't know that
anybody has done testing on large repos to find out how large the
difference is).

-Peff
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