From: Pavel Machek <pavel@suse.cz>
To: Olivier Galibert <galibert@pobox.com>, linux-kernel@vger.kernel.org
Subject: Re: BitBucket: GPL-ed KitBeeper clone
Date: Fri, 7 Mar 2003 13:32:37 +0100 [thread overview]
Message-ID: <20030307123237.GG18420@atrey.karlin.mff.cuni.cz> (raw)
In-Reply-To: <20030307121215.GA68353@dspnet.fr.eu.org>
Hi!
> > Can you elaborate? I thought that this
> > "real DAG" structure is more or less
> > equivalent to each developer having
> > his owm CVS repository...
>
> Nope. CVS uses RCS, and RCS only knows about trees, not graphs.
> Specifically, branch merges are not tagged as such, and as a result
> CVS is unable to pick up the best grandparent when doing a merge.
> That's the main reason of why branching under CVS is so painful
> (forgetting about the performance issues).
I see. But I still somehow can not understand how merging is
possible. Merge possibly means work-by-hand, right? So it is not as
simple as noting that 1.8 and 1.7.1.1 were merged into 1.9, no? [And
what if developer did really crap job at merging that, like dropping
all changes from 1.7.1.1?]
> > If I fixed CVS renames, added atomic
> > commits, splits and merges, and gave each
> > developer his own CVS repository,
> > would I be in same league as bk?
> > Ie 10 times slower but equivalent
> > functionality?
>
> Nope. You'll find out that this per-developper repository quickly
> needs to become a per-branch repository, and even need you need to
> write somewhere when the merges with other repositories happen, and
> you end up with the DAG again.
Yep, that's what I wanted to know. [I see per-branch repository is
pain, but it helps me to understand that.]
Thanx for your explanations,
Pavel
--
Horseback riding is like software...
...vgf orggre jura vgf serr.
next prev parent reply other threads:[~2003-03-07 12:22 UTC|newest]
Thread overview: 199+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-03-02 0:11 BitBucket: GPL-ed KitBeeper clone Adam J. Richter
2003-03-02 0:20 ` Larry McVoy
2003-03-02 0:20 ` David Lang
2003-03-02 0:49 ` Arador
2003-03-02 1:03 ` Jeff Garzik
2003-03-02 2:15 ` Alan Cox
2003-03-02 1:19 ` Jeff Garzik
2003-03-02 1:40 ` BitBucket: GPL-ed *notrademarkhere* clone Andrea Arcangeli
2003-03-02 1:45 ` Jeff Garzik
2003-03-02 2:09 ` Andrea Arcangeli
2003-03-02 17:28 ` Jeff Garzik
2003-03-02 18:16 ` Andrea Arcangeli
2003-03-02 20:12 ` Jeff Garzik
2003-03-02 21:49 ` Geert Uytterhoeven
2003-03-03 18:37 ` Larry McVoy
2003-03-03 18:46 ` Larry McVoy
2003-03-03 22:57 ` Andrea Arcangeli
2003-03-03 23:14 ` Pavel Machek
2003-03-03 23:56 ` David Lang
2003-03-04 0:02 ` Jeff Garzik
2003-03-04 0:05 ` Larry McVoy
2003-03-04 0:15 ` Andrea Arcangeli
2003-03-04 0:30 ` Jeff Garzik
2003-03-04 2:20 ` Martin J. Bligh
2003-03-04 5:29 ` Linus Torvalds
2003-03-04 5:56 ` Dimitrie O. Paun
2003-03-04 14:51 ` Jeff Garzik
2003-03-02 3:29 ` H. Peter Anvin
2003-03-02 17:12 ` Jeff Garzik
2003-03-02 18:39 ` H. Peter Anvin
2003-03-02 20:01 ` Jeff Garzik
2003-03-03 0:47 ` nickn
2003-03-03 0:55 ` David Lang
2003-03-03 2:31 ` Jeff Garzik
2003-03-03 2:32 ` Jeff Garzik
2003-03-04 1:07 ` Horst von Brand
2003-03-04 1:10 ` H. Peter Anvin
2003-03-03 21:53 ` Joel Becker
2003-03-04 23:37 ` Olaf Hering
2003-03-06 16:47 ` Pavel Machek
2003-03-06 16:41 ` Pavel Machek
2003-03-07 11:24 ` Tupshin Harper
2003-03-07 11:28 ` Pavel Machek
2003-03-07 21:53 ` H. Peter Anvin
2003-03-08 23:18 ` Daniel Phillips
2003-03-03 0:13 ` Pavel Machek
2003-03-03 0:10 ` BitBucket: GPL-ed KitBeeper clone Pavel Machek
2003-03-04 16:16 ` David Woodhouse
2003-03-04 16:27 ` Pavel Machek
2003-03-02 1:26 ` Olivier Galibert
2003-03-06 16:18 ` Pavel Machek
2003-03-07 12:12 ` Olivier Galibert
2003-03-07 12:32 ` Pavel Machek [this message]
2003-03-07 16:54 ` Olivier Galibert
2003-03-07 17:14 ` Geert Uytterhoeven
2003-03-07 19:08 ` Pavel Machek
2003-03-07 19:25 ` Eli Carter
2003-03-07 20:29 ` Pavel Machek
2003-03-07 23:16 ` Linus Torvalds
2003-03-08 22:52 ` Zack Brown
2003-03-09 0:05 ` Larry McVoy
2003-03-09 1:21 ` Davide Libenzi
2003-03-09 2:45 ` Zack Brown
2003-03-09 3:19 ` Roman Zippel
2003-03-09 3:42 ` Linus Torvalds
2003-03-09 4:32 ` Roman Zippel
2003-03-09 13:34 ` Eric W. Biederman
2003-03-09 15:35 ` Roman Zippel
2003-03-09 16:55 ` Martin J. Bligh
2003-03-09 17:20 ` Zack Brown
2003-03-09 17:48 ` Martin J. Bligh
2003-03-09 19:58 ` Larry McVoy
2003-03-09 21:32 ` Zack Brown
2003-03-09 21:54 ` Valdis.Kletnieks
2003-03-09 23:28 ` Larry McVoy
2003-03-13 20:00 ` Pavel Machek
2003-03-09 17:39 ` Linus Torvalds
2003-03-09 17:58 ` Martin J. Bligh
2003-03-09 18:20 ` Larry McVoy
2003-03-09 23:19 ` fs
2003-03-13 0:41 ` Pavel Machek
2003-03-13 21:21 ` Horst von Brand
2003-03-09 20:01 ` Roman Zippel
2003-03-13 0:13 ` Pavel Machek
2003-03-09 14:49 ` Olivier Galibert
2003-03-13 0:05 ` Pavel Machek
2003-03-10 0:02 ` Thoughts about ideal kernel SCM Petr Baudis
2003-03-10 0:32 ` Larry McVoy
2003-03-12 19:29 ` Petr Baudis
2003-03-13 10:36 ` Pavel Machek
2003-03-14 22:56 ` Petr Baudis
2003-03-17 20:59 ` Petr Baudis
2003-03-10 3:41 ` BitBucket: GPL-ed KitBeeper clone Horst von Brand
2003-03-10 13:52 ` Jamie Lokier
2003-03-10 23:03 ` Daniel Phillips
2003-03-11 18:40 ` Zack Brown
2003-03-11 18:46 ` Martin J. Bligh
2003-03-11 19:30 ` Daniel Phillips
2003-03-11 19:33 ` Martin J. Bligh
2003-03-11 20:08 ` Andrew Morton
2003-03-11 20:29 ` Martin J. Bligh
2003-03-12 6:14 ` Werner Almesberger
2003-03-13 2:48 ` Daniel Phillips
2003-03-13 3:11 ` Werner Almesberger
2003-03-14 12:29 ` Pavel Machek
2003-03-15 20:53 ` Martin J. Bligh
2003-03-15 21:26 ` Daniel Phillips
2003-03-15 21:32 ` Petr Baudis
2003-03-15 23:39 ` Petr Baudis
2003-03-16 0:39 ` Horst von Brand
2003-04-07 21:22 ` Petr Baudis
2003-03-12 3:47 ` Horst von Brand
2003-03-12 4:03 ` Larry McVoy
2003-03-12 4:49 ` [PATCH] ~/kernel/sys.c (2.5.64) (trivial) Jay Patrick Howard
2003-03-12 5:22 ` BitBucket: GPL-ed KitBeeper clone Zack Brown
2003-03-12 5:44 ` Horst von Brand
2003-03-12 13:48 ` Daniel Phillips
2003-03-13 1:03 ` Horst von Brand
2003-03-13 16:53 ` Daniel Phillips
2003-03-15 15:02 ` Horst von Brand
2003-03-15 21:25 ` Daniel Phillips
2003-03-12 6:19 ` Werner Almesberger
2003-03-13 1:31 ` Horst von Brand
2003-03-12 15:32 ` Horst von Brand
2003-03-12 16:13 ` Daniel Phillips
2003-03-12 20:37 ` Horst von Brand
2003-03-12 20:54 ` H. Peter Anvin
2003-03-13 2:00 ` Daniel Phillips
2003-03-15 1:03 ` Horst von Brand
2003-03-12 13:22 ` Daniel Phillips
2003-03-13 0:52 ` Horst von Brand
2003-03-13 17:00 ` Daniel Phillips
2003-03-13 21:48 ` Zack Brown
2003-03-13 22:04 ` Daniel Phillips
2003-03-15 16:21 ` Horst von Brand
2003-03-15 21:25 ` Daniel Phillips
2003-03-15 21:53 ` Robert Anderson
2003-03-15 21:50 ` Randy.Dunlap
2003-03-15 22:16 ` Robert Anderson
2003-03-15 22:18 ` Robert Anderson
2003-03-16 0:18 ` Petr Baudis
2003-03-16 0:53 ` Davide Libenzi
2003-03-16 0:55 ` [arch-users] " Stig Brautaset
2003-03-16 1:44 ` Tom Lord
2003-03-16 2:06 ` Adam Spiers
2003-03-16 3:28 ` David Lang
2003-03-16 5:43 ` Robert Anderson
2003-03-16 11:57 ` (Re: BitBucket: GPL-ed KitBeeper clone) Moving to arch-users Petr Baudis
2003-03-14 11:34 ` BitBucket: GPL-ed KitBeeper clone Pavel Machek
2003-03-12 23:38 ` Pavel Machek
2003-03-09 2:06 ` Horst von Brand
[not found] ` <b4b98v_14m_1@penguin.transmeta.com>
2003-03-12 23:23 ` Pavel Machek
2003-03-13 21:15 ` Horst von Brand
2003-03-08 0:18 ` Olaf Dietsche
2003-03-02 1:37 ` Filip Van Raemdonck
-- strict thread matches above, loose matches on Subject: below --
2003-04-08 17:52 Chuck Ebbert
2003-04-08 18:02 ` Larry McVoy
2003-04-08 23:19 ` Jamie Lokier
2003-04-09 0:47 ` Larry McVoy
2003-04-09 1:34 ` Jamie Lokier
2003-04-09 1:43 ` Robert White
2003-04-09 2:09 ` Mark Mielke
2003-04-09 13:14 ` Mr. James W. Laferriere
2003-04-09 13:35 ` Matti Aarnio
2003-04-08 13:06 Chuck Ebbert
2003-04-07 23:57 Chuck Ebbert
2003-04-08 0:30 ` Larry McVoy
[not found] <1047571030.5373.161.camel@passion.cambridge.redhat.com>
2003-03-15 14:17 ` Horst von Brand
2003-03-15 18:48 ` Larry McVoy
2003-03-15 18:51 ` David Woodhouse
[not found] <20030309001008$2ed5@gated-at.bofh.it>
[not found] ` <20030309001008$4e61@gated-at.bofh.it>
[not found] ` <20030309001008$0732@gated-at.bofh.it>
[not found] ` <20030309001008$747c@gated-at.bofh.it>
[not found] ` <20030309001008$6342@gated-at.bofh.it>
2003-03-15 10:47 ` Kai Henningsen
2003-03-13 16:21 Ed Vance
2003-03-15 14:31 ` Horst von Brand
2003-03-12 19:00 Kaz Kylheku
2003-03-03 17:02 Adam J. Richter
2003-03-02 2:23 Adam J. Richter
2003-03-03 15:26 ` Edward S. Marshall
2003-03-03 23:06 ` Daniel Phillips
2003-02-26 20:02 BitBucket: GPL-ed BitKeeper clone Pavel Machek
2003-03-01 18:05 ` BitBucket: GPL-ed KitBeeper clone Pavel Janík
2003-03-01 18:39 ` Christoph Hellwig
2003-03-01 22:43 ` Pavel Janík
2003-03-02 9:11 ` Christoph Hellwig
2003-03-02 9:30 ` John Bradford
2003-03-02 9:32 ` Christoph Hellwig
2003-03-03 12:39 ` Pavel Machek
2003-03-03 14:12 ` Alan Cox
2003-03-03 13:57 ` John Bradford
2003-03-03 14:22 ` Richard B. Johnson
2003-03-03 15:08 ` John Bradford
2003-03-03 17:50 ` David Lang
2003-03-03 19:37 ` Pavel Machek
2003-03-03 19:49 ` John Bradford
2003-03-03 14:22 ` Charles Cazabon
2003-03-02 9:57 ` Pavel Janík
2003-03-03 8:05 ` Helge Hafting
2003-03-03 8:28 ` Bernd Eckenfels
2003-03-01 20:58 ` Paul Fulghum
2003-03-02 4:52 ` Mike Galbraith
2003-03-03 0:02 ` Pavel Machek
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