From: Jakub Narebski <jnareb@gmail.com>
To: elton sky <eltonsky9404@gmail.com>
Cc: Nguyen Thai Ngoc Duy <pclouds@gmail.com>,
Thomas Rast <trast@student.ethz.ch>,
Git Mailing List <git@vger.kernel.org>
Subject: Re: GSoC - Designing a faster index format
Date: Thu, 22 Mar 2012 17:46:09 -0700 (PDT) [thread overview]
Message-ID: <m3obrob0vk.fsf@localhost.localdomain> (raw)
In-Reply-To: <CAKTdtZmYc=xz4zCPQiuSTUvdmbLRKXNWNL3N6_4Bj0gujYmRvw@mail.gmail.com>
elton sky <eltonsky9404@gmail.com> writes:
> Got a few questions:
>
> 1. index is used for building next commit, so it should only include
> files created/modified/deleted. But I see it has all entries for
> current working dir. why?
Because git is snapshot based, not changeset based. Ecah commit
stores state of repository in the form of 'tree' object, which is
build out of index.
Also index stores extra information, like mtime, about all files
to make operations faster (skip unchanged files). The index was
originally at the very beginning named dircache.
[...]
--
Jakub Narebski
next prev parent reply other threads:[~2012-03-23 0:46 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-20 23:10 GSoC - Designing a faster index format elton sky
2012-03-21 1:18 ` Nguyen Thai Ngoc Duy
2012-03-21 11:25 ` Thomas Rast
2012-03-21 12:01 ` elton sky
2012-03-22 20:32 ` elton sky
2012-03-23 0:46 ` Jakub Narebski [this message]
2012-03-23 1:30 ` Nguyen Thai Ngoc Duy
2012-03-23 10:27 ` elton sky
2012-03-23 11:24 ` Nguyen Thai Ngoc Duy
[not found] ` <CAKTdtZmLOzAgG0uCDcVr+O41XPX-XnoVZjsZWPN-BLjq2oG-7A@mail.gmail.com>
2012-03-24 8:58 ` Nguyen Thai Ngoc Duy
[not found] ` <CAKTdtZkpjVaBSkcieojKj+V7WztT3UDzjGfXyghY=S8mq+X9zw@mail.gmail.com>
[not found] ` <CACsJy8D85thmK_5jLC7MxJtsitLr=zphKiw2miwPu7Exf7ty=Q@mail.gmail.com>
2012-03-26 12:36 ` elton sky
2012-03-26 12:41 ` elton sky
2012-03-26 14:28 ` Thomas Rast
2012-03-26 15:25 ` Nguyen Thai Ngoc Duy
2012-03-26 16:08 ` Shawn Pearce
2012-03-27 2:49 ` elton sky
2012-03-27 3:34 ` David Barr
2012-03-27 6:33 ` Nguyen Thai Ngoc Duy
2012-03-29 9:45 ` Jeff King
2012-03-27 6:31 ` Nguyen Thai Ngoc Duy
2012-03-26 16:19 ` Nguyen Thai Ngoc Duy
2012-03-27 3:20 ` elton sky
2012-03-27 6:43 ` Nguyen Thai Ngoc Duy
2012-04-02 11:50 ` elton sky
2012-04-02 12:31 ` Nguyen Thai Ngoc Duy
2012-04-02 14:27 ` Shawn Pearce
2012-04-02 15:12 ` Nguyen Thai Ngoc Duy
2012-04-04 8:26 ` elton sky
2012-04-04 12:20 ` Nguyen Thai Ngoc Duy
2012-04-04 16:22 ` elton sky
2012-04-06 3:13 ` elton sky
2012-04-06 3:15 ` elton sky
2012-04-07 8:29 ` elton sky
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