From: "Stephen J. Turnbull" <stephen@xemacs.org>
To: Stefan Monnier <monnier@iro.umontreal.ca>
Cc: "Eric S. Raymond" <esr@thyrsus.com>, David Kastrup <dak@gnu.org>,
emacs-devel@gnu.org
Subject: Re: Referring to revisions in the git future.
Date: Thu, 30 Oct 2014 11:43:28 +0900 [thread overview]
Message-ID: <87wq7i2s6n.fsf@uwakimon.sk.tsukuba.ac.jp> (raw)
In-Reply-To: <jwvppdb7z94.fsf-monnier+emacs@gnu.org>
Stefan Monnier writes:
> > Yes, git commits are cheap.
>
> The same was said of Bzr commits. I'll see when I start using it
> more extensively.
The bzr developers didn't care about speed until somebody complained,
and their designs for repos were not only complexified by their
requirements for human-friendliness (not to mentioned their attachment
to multi-layered APIs), but they repeatedly changed those underlying
data structures.
Git has always had only one repo structure: a object database whose
"large" structure is provided by what are basically conses (the
commits). The database has been layered over "packs", it's true, but
those are actually a speed optimization for accessing commits and
other objects.
Historically, Git also perceived itself to be competing on speed
(specifically with Mercurial, thus the introduction of packs), and
addressed performance issues quickly and thoroughly.
I don't know if that makes you feel better, but it should. :-)
next prev parent reply other threads:[~2014-10-30 2:43 UTC|newest]
Thread overview: 137+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-28 22:33 Referring to revisions in the git future Alan Mackenzie
2014-10-28 22:54 ` Óscar Fuentes
2014-10-28 23:05 ` Alan Mackenzie
2014-10-28 23:24 ` Óscar Fuentes
2014-10-31 22:47 ` Paul Eggert
2014-10-29 0:49 ` Eric S. Raymond
2014-10-29 3:38 ` Stephen J. Turnbull
2014-10-29 12:26 ` Stefan Monnier
2014-10-29 12:41 ` Alexander Baier
2014-10-29 14:52 ` Barry Warsaw
2014-10-29 15:01 ` David Kastrup
2014-10-29 15:06 ` Eric S. Raymond
2014-10-29 18:12 ` Barry Warsaw
2014-10-29 22:09 ` Lars Magne Ingebrigtsen
2014-10-29 22:29 ` Eric S. Raymond
2014-10-29 23:31 ` Paul Eggert
2014-10-30 0:01 ` Nic Ferrier
2014-10-30 1:53 ` Stefan Monnier
2014-10-30 2:10 ` Eric S. Raymond
2014-10-30 2:13 ` Paul Eggert
2014-10-30 2:48 ` Eric S. Raymond
2014-10-30 2:25 ` Glenn Morris
2014-10-30 10:10 ` David Kastrup
2014-10-30 13:03 ` Stefan Monnier
2014-10-30 13:40 ` David Kastrup
2014-10-30 14:00 ` Stefan Monnier
2014-10-30 13:02 ` Stefan Monnier
2014-10-30 15:12 ` Eric S. Raymond
2014-10-30 16:49 ` Stefan Monnier
2014-10-30 6:46 ` Jan Djärv
2014-10-30 7:36 ` Ivan Shmakov
2014-10-30 8:09 ` Jan Djärv
2014-10-30 8:31 ` Eric S. Raymond
2014-10-30 9:53 ` Andreas Schwab
2014-10-30 10:13 ` Eric S. Raymond
2014-10-30 10:32 ` Andreas Schwab
2014-10-30 11:13 ` Nicolas Richard
2014-10-30 10:12 ` David Kastrup
2014-10-30 13:29 ` Stefan Monnier
2014-10-30 15:33 ` DVCS design philosophy Eric S. Raymond
2014-10-30 16:59 ` Stefan Monnier
2014-10-30 17:41 ` Eric S. Raymond
2014-10-31 20:18 ` Referring to revisions in the git future Nicolas Richard
2014-10-31 21:11 ` Stefan Monnier
2014-11-01 1:44 ` Stephen J. Turnbull
2014-11-01 7:58 ` David Kastrup
2014-10-30 14:20 ` Barry Warsaw
2014-11-01 1:23 ` Stephen J. Turnbull
2014-10-30 15:52 ` Eli Zaretskii
2014-10-30 3:32 ` Stephen J. Turnbull
2014-10-30 4:35 ` Barry Warsaw
2014-10-30 5:24 ` Stephen J. Turnbull
2014-10-30 10:17 ` David Kastrup
2014-10-30 13:42 ` Alex Bennée
2014-10-30 13:19 ` Stefan Monnier
2014-10-31 6:36 ` Stephen J. Turnbull
2014-10-31 19:42 ` David Kastrup
2014-11-01 1:34 ` Stephen J. Turnbull
2014-11-01 7:05 ` Tassilo Horn
2014-11-01 7:09 ` Dima Kogan
2014-11-01 7:28 ` Paul Eggert
2014-11-01 7:49 ` David Kastrup
2014-11-01 9:46 ` Alan Mackenzie
2014-11-01 10:13 ` Eli Zaretskii
2014-11-01 11:33 ` Alan Mackenzie
2014-11-01 13:06 ` Eli Zaretskii
2014-11-01 13:21 ` Alan Mackenzie
2014-11-01 10:29 ` David Kastrup
2014-11-01 11:29 ` Alan Mackenzie
2014-11-01 11:57 ` David Kastrup
2014-11-01 12:29 ` Alan Mackenzie
2014-11-01 12:47 ` Ivan Shmakov
2014-11-01 13:46 ` Alan Mackenzie
2014-11-01 18:58 ` Stephen J. Turnbull
2014-11-01 12:49 ` David Kastrup
2014-10-29 1:11 ` Stefan Monnier
2014-10-29 6:06 ` Werner LEMBERG
2014-10-29 9:01 ` David Kastrup
2014-10-29 8:50 ` David Kastrup
2014-10-29 9:52 ` Eric S. Raymond
2014-10-29 11:00 ` David Kastrup
2014-10-29 14:32 ` Eli Zaretskii
2014-10-29 14:35 ` David Kastrup
2014-10-29 14:55 ` Eli Zaretskii
2014-10-30 4:44 ` Richard Stallman
2014-10-30 8:32 ` Eric S. Raymond
2014-10-30 10:25 ` David Kastrup
2014-10-30 11:51 ` Eric S. Raymond
2014-10-30 12:14 ` David Kastrup
2014-10-30 15:01 ` Eric S. Raymond
2014-10-30 15:53 ` Eli Zaretskii
2014-10-30 15:56 ` Eric S. Raymond
2014-10-30 16:44 ` Eli Zaretskii
2014-10-31 7:47 ` Richard Stallman
2014-10-31 8:17 ` Eli Zaretskii
2014-10-31 10:21 ` Eric S. Raymond
2014-10-29 12:35 ` Stefan Monnier
2014-10-29 13:00 ` Jose E. Marchesi
2014-10-29 13:59 ` Stefan Monnier
2014-10-29 14:39 ` Eric S. Raymond
2014-10-29 14:46 ` Rasmus
2014-10-29 14:52 ` Eric S. Raymond
2014-10-30 0:58 ` Rob Browning
2014-10-29 15:27 ` Stefan Monnier
2014-10-29 14:04 ` utf8 and emacs text/string multibyte representation Camm Maguire
2014-10-29 14:51 ` Eli Zaretskii
2014-10-29 15:55 ` Camm Maguire
2014-10-29 16:19 ` Eli Zaretskii
2014-10-30 14:13 ` Camm Maguire
2014-10-30 16:06 ` Eli Zaretskii
2014-10-30 16:27 ` Camm Maguire
2014-10-30 16:35 ` Eli Zaretskii
2014-10-31 18:05 ` Camm Maguire
2014-11-01 9:01 ` Eli Zaretskii
2014-11-01 18:32 ` Stephen J. Turnbull
2014-11-01 18:41 ` David Kastrup
2014-11-01 19:09 ` Stephen J. Turnbull
2014-11-02 0:56 ` Stefan Monnier
2014-11-01 1:16 ` Stephen J. Turnbull
2014-10-29 16:45 ` Stefan Monnier
2014-10-29 15:56 ` Raymond Toy
2014-10-30 14:16 ` Camm Maguire
2014-10-31 18:47 ` Sam Steingold
2014-10-31 21:00 ` Andreas Schwab
2014-10-31 19:52 ` [Gcl-devel] " Stefan Monnier
2014-10-30 3:08 ` Stephen J. Turnbull
2014-10-29 13:26 ` Referring to revisions in the git future Eric S. Raymond
2014-10-29 14:04 ` Stefan Monnier
2014-10-29 14:49 ` Eric S. Raymond
2014-10-30 2:43 ` Stephen J. Turnbull [this message]
2014-10-29 13:08 ` Jan Djärv
2014-10-29 13:27 ` Eric S. Raymond
2014-10-29 13:49 ` Eric S. Raymond
2014-10-29 18:03 ` Jan Djärv
2014-10-29 11:18 ` Alan Mackenzie
2014-10-29 11:37 ` David Kastrup
-- strict thread matches above, loose matches on Subject: below --
2014-10-31 9:43 Eli Zaretskii
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