Re: Deciding between Git/Mercurial

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On Sun, Sep 27, 2009 at 3:24 PM, Anteru
<newsgroups@xxxxxxxxxxxxxxxxxxxxxx> wrote:
> Hi,
>
> I'm currently evaluating DVCS for a project, and we're at a point where
> it comes down to either Mercurial or Git. Right now, I'm advocating for
> Git, while my co-workers like Mercurial, so I'd like to provide some
> good arguments in favor of git. Unfortunately, I'm not a git expert, so
> I hope I can get some help here ...

IMO the key difference between hg and git is the storage model: hg
stores deltas, while git stores snapshots. That would mean that
certain operations are theoretically faster in git (e.g. checkout,
diff) while others faster in hg, although with git's packed format I
guess there's no operation faster in hg. This means that it doesn't
matter how much hg's python code improves, or if they even re-write
parts in C, they will never be able to match git's performance (unless
they change the storage model, which essentially means changing the
whole design -- won't happen).

All this is just guesses, I've thought about doing some measurements
but I haven't had time.

Cheers.

-- 
Felipe Contreras
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