Re: sparse fetch, was Re: [PATCH 08/12] git-clone: support --path to do sparse clone

From: Sverre Rabbelier <alturin@gmail.com>
Date: Jul 25, 2008, 08:14 UTC
Message-ID: <bd6139dc0807250114qc1c6cf5ufa7df0862507010d@mail.gmail.com>
In-Reply-To: <alpine.DEB.1.00.0807250210090.4140@eeepc-johanness>

On Fri, Jul 25, 2008 at 02:12, Johannes Schindelin <Johannes.Schindelin@gmx.de> wrote:

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> On Thu, 24 Jul 2008, Sverre Rabbelier wrote:
>> Wouldn't that be as simple as passing a pathspec to git-rev-list? Not a
>> lot of overhead there I reckon.
>
> So the server would _not_ have to deflate the objects to inspect them?  I
> thought you knew more about Git's object database.

Nope, I did not know this. I thought that the server already had to do all that to decide what to send, since not every request asks for the same pack (someone might not have updated in 2 month, or someone might might be up to date, or anything in between).

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>> Just keep them?
>
> You'd still have to inspect the objects, which is way more work than the
> current code has to do.  Remember: in the optimal case, upload-pack does
> not more than just serve the existing deltas/base objects.

Ah, I can see how that would produce overhead then.

-- 
Cheers,

Sverre Rabbelier