From: Johannes Schindelin <Johannes.Schindelin@gmx.de>
To: Jon Smirl <jonsmirl@gmail.com>
Cc: Julian Phillips <julian@quantumfyre.co.uk>,
Andreas Ericsson <ae@op5.se>, Theodore Tso <tytso@mit.edu>,
Junio C Hamano <gitster@pobox.com>,
Git Mailing List <git@vger.kernel.org>
Subject: Re: Git's database structure
Date: Thu, 6 Sep 2007 13:56:36 +0100 (BST) [thread overview]
Message-ID: <Pine.LNX.4.64.0709061354180.28586@racer.site> (raw)
In-Reply-To: <9e4733910709050912i57ed7137o6abb02ee741d394b@mail.gmail.com>
Hi,
On Wed, 5 Sep 2007, Jon Smirl wrote:
> On 9/5/07, Julian Phillips <julian@quantumfyre.co.uk> wrote:
> > On Wed, 5 Sep 2007, Jon Smirl wrote:
> >
> > >> Ah, there we go. A use-case at last :)
> >
> > But not a brilliant one. You sign off on commits not blobs. So you
> > go from the sign-off to paths, then to blobs. There is no need to go
> > from blob to path unless you deliberately introduce such a need.
>
> Use blame for an example. Blame has to crawl every commit to see if it
> touched the file. It keeps doing this until it figures out the last
> author for every line in the file. Worse case blame has to crawl every
> commit in the data store.
But you can add _yet another_ index to it, which can be generated on the
fly, so that Git only has to generate the information once, and then reuse
it later. As a benefit of this method, the underlying well-tested
structure needs no change at all.
BTW could you please, please, please cut the quoted message that you are
_not_ responding to? It really _wastes_ my time.
Ciao,
Dscho
next prev parent reply other threads:[~2007-09-06 12:56 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-09-04 15:23 Git's database structure Jon Smirl
2007-09-04 15:55 ` Andreas Ericsson
2007-09-04 16:07 ` Mike Hommey
2007-09-04 16:10 ` Andreas Ericsson
2007-09-04 16:19 ` Jon Smirl
2007-09-04 16:29 ` Andreas Ericsson
2007-09-04 17:09 ` Jeff King
2007-09-04 20:17 ` David Tweed
2007-09-04 17:21 ` Junio C Hamano
2007-09-04 16:28 ` Jon Smirl
2007-09-04 16:31 ` Andreas Ericsson
2007-09-04 16:47 ` Jon Smirl
2007-09-04 16:51 ` Andreas Ericsson
2007-09-04 17:25 ` Junio C Hamano
2007-09-04 17:44 ` Jon Smirl
2007-09-04 18:04 ` Mike Hommey
2007-09-04 19:44 ` Reece Dunn
2007-09-04 18:06 ` Junio C Hamano
2007-09-04 21:25 ` Theodore Tso
2007-09-04 21:54 ` Jon Smirl
2007-09-05 7:18 ` Andreas Ericsson
2007-09-05 13:41 ` Jon Smirl
2007-09-05 14:51 ` Andreas Ericsson
2007-09-05 15:37 ` Jon Smirl
2007-09-05 15:54 ` Julian Phillips
2007-09-05 16:12 ` Jon Smirl
2007-09-05 17:31 ` Julian Phillips
2007-09-06 1:27 ` Kyle Moffett
2007-09-05 17:39 ` Mike Hommey
2007-09-06 8:49 ` Andreas Ericsson
2007-09-06 9:09 ` Junio C Hamano
2007-09-06 11:03 ` Wincent Colaiuta
2007-09-06 12:56 ` Johannes Schindelin [this message]
2007-09-06 18:14 ` Steven Grimm
2007-09-07 0:33 ` Martin Langhoff
2007-09-05 19:52 ` Andy Parkins
2007-09-04 17:19 ` Julian Phillips
2007-09-04 17:30 ` Jon Smirl
2007-09-04 18:51 ` Andreas Ericsson
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