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From: "Shawn O. Pearce" <spearce@spearce.org>
To: Junio C Hamano <gitster@pobox.com>
Cc: Johannes Schindelin <Johannes.Schindelin@gmx.de>,
	Nicolas Pitre <nico@cam.org>, Nix <nix@esperi.org.uk>,
	Steven Grimm <koreth@midwinter.com>,
	Linus Torvalds <torvalds@linux-foundation.org>,
	Git Mailing List <git@vger.kernel.org>
Subject: Re: People unaware of the importance of "git gc"?
Date: Fri, 7 Sep 2007 00:48:41 -0400	[thread overview]
Message-ID: <20070907044841.GX18160@spearce.org> (raw)
In-Reply-To: <7vk5r3adlx.fsf@gitster.siamese.dyndns.org>

Junio C Hamano <gitster@pobox.com> wrote:
> Johannes Schindelin <Johannes.Schindelin@gmx.de> writes:
> 
> > On Wed, 5 Sep 2007, Junio C Hamano wrote:
> >>  static int aggressive_window = -1;
> >> +static int gc_auto_threshold = 6700;
> >
> > Please don't do that.
> >
> > When you share objects with another git directory, git-gc --auto can get 
> > rid of the objects when some objects go away in the referenced repository.  
> 
> I thought the whole point of "gc --auto" was to have something
> that does not lose/prune any objects, even the ones that do not
> seem to be referenced from anywhere.  That is why invocations of
> "git gc --auto" do not say --prune as you saw the second patch,
> and the repack command "gc --auto" runs is "repack -d -l"
> instead of "repack -a -d -l", which means that it does run
> git-prune-packed after repacking but not git-prune.
> 
> Maybe I am missing something...

No, you aren't Junio.  `gc --auto` as you defined it is safe.
It won't delete objects from the database.  So it won't impact shared
repositories, or readers that are actively running in parallel with
the gc.  Both of which are important.

-- 
Shawn.

  parent reply	other threads:[~2007-09-07  4:49 UTC|newest]

Thread overview: 97+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-09-05  7:09 People unaware of the importance of "git gc"? Linus Torvalds
2007-09-05  7:21 ` Martin Langhoff
2007-09-05  7:37   ` Karl Hasselström
2007-09-05  7:30 ` Junio C Hamano
2007-09-05  7:26   ` Tomash Brechko
2007-09-05  8:13   ` Johan Herland
2007-09-05  8:39     ` Matthieu Moy
2007-09-05  8:41       ` Johan Herland
2007-09-05  8:47         ` David Kastrup
2007-09-05  8:51       ` Pierre Habouzit
2007-09-05  9:02         ` David Kastrup
2007-09-05  9:04         ` Matthieu Moy
2007-09-05  8:51   ` Wincent Colaiuta
2007-09-05  7:42 ` Pierre Habouzit
2007-09-05  8:16   ` Junio C Hamano
2007-09-05  8:50   ` Steven Grimm
     [not found]     ` <86ps0xcwxo.fsf@lola.quinscape.zz>
2007-09-05  9:07       ` Steven Grimm
2007-09-05  9:13         ` David Kastrup
2007-09-05  9:07     ` Junio C Hamano
2007-09-05  9:27       ` Martin Langhoff
2007-09-05  9:33         ` Matthieu Moy
2007-09-05 14:17           ` Johan De Messemaeker
2007-09-05 17:31             ` Matthieu Moy
2007-09-05 23:56               ` Jeff King
2007-09-05  9:13     ` David Kastrup
2007-09-05  9:14     ` Pierre Habouzit
2007-09-05 17:51   ` Nix
2007-09-05 18:14     ` Steven Grimm
2007-09-05 18:22       ` Nix
2007-09-05 18:54         ` Nicolas Pitre
2007-09-05 20:01           ` Junio C Hamano
2007-09-05 20:35             ` Nicolas Pitre
2007-09-05 21:14               ` Nix
2007-09-05 21:46               ` Junio C Hamano
2007-09-05 23:04                 ` Nicolas Pitre
2007-09-05 23:42                   ` Junio C Hamano
2007-09-06  0:27                     ` Carlos Rica
2007-09-06  5:55                 ` David Kastrup
2007-09-05 21:49               ` Junio C Hamano
2007-09-05 21:59                 ` Invoke "git gc --auto" from commit, merge, am and rebase Junio C Hamano
2007-09-06  2:39                   ` Shawn O. Pearce
2007-09-05 20:37             ` [PATCH] Invoke "git gc --auto" from "git add" and "git fetch" Junio C Hamano
     [not found]               ` <69b0c0350709051357ifa547aarfe3e0b36cf9be98f@mail.gmail.com>
2007-09-05 20:59                 ` Fwd: " Govind Salinas
2007-09-06 12:02               ` Johannes Schindelin
2007-09-05 21:18             ` People unaware of the importance of "git gc"? Alex Riesen
2007-09-06  2:44             ` Russ Dill
2007-09-06  2:52               ` Shawn O. Pearce
2007-09-06  9:28               ` Andreas Ericsson
2007-09-06  2:45             ` Shawn O. Pearce
2007-09-06  2:49               ` Steven Grimm
2007-09-06  2:56                 ` Shawn O. Pearce
2007-09-06 15:54             ` Johannes Schindelin
2007-09-06 17:49               ` Junio C Hamano
2007-09-06 18:15                 ` Linus Torvalds
2007-09-06 18:29                   ` Steven Grimm
2007-09-06 23:12                   ` Subject: [PATCH] git-merge-pack Junio C Hamano
2007-09-06 23:35                     ` Linus Torvalds
2007-09-07  0:51                     ` Nicolas Pitre
2007-09-07  1:58                       ` Junio C Hamano
2007-09-07  2:32                         ` Nicolas Pitre
2007-09-07  4:07                       ` Shawn O. Pearce
2007-09-07  4:43                       ` Junio C Hamano
2007-09-08  9:50                         ` [PATCH] make sha1_file.c::matches_pack_name() available to others Junio C Hamano
2007-09-08 10:01                         ` [PATCH] pack-objects --repack-unpacked Junio C Hamano
2007-09-07  7:11                     ` Subject: [PATCH] git-merge-pack Johannes Sixt
2007-09-07  7:34                       ` Junio C Hamano
2007-09-07  7:24                     ` Andy Parkins
2007-09-07  4:48                 ` Shawn O. Pearce [this message]
2007-09-07 10:12                 ` People unaware of the importance of "git gc"? Johannes Schindelin
2018-10-07 18:28           ` What's so special about objects/17/ ? Ævar Arnfjörð Bjarmason
2018-10-07 18:35             ` Johannes Sixt
2018-10-07 19:06               ` Ævar Arnfjörð Bjarmason
2018-10-07 22:39                 ` Johannes Sixt
2018-10-08  0:54                   ` Junio C Hamano
2018-10-07 19:46             ` Junio C Hamano
2018-10-07 20:07               ` Junio C Hamano
2018-10-08 19:17                 ` Stefan Beller
2018-10-09  1:03                   ` Junio C Hamano
2018-10-09 17:37                     ` Stefan Beller
2018-10-10  1:10                       ` Junio C Hamano
2018-10-10 19:08                         ` Stefan Beller
2018-10-08 10:36               ` Ævar Arnfjörð Bjarmason
2018-10-09  1:07                 ` Junio C Hamano
2018-10-09 17:40                   ` Stefan Beller
2007-09-05  8:16 ` People unaware of the importance of "git gc"? David Kastrup
2007-09-05 16:47 ` Govind Salinas
2007-09-05 17:19   ` Carl Worth
2007-09-05 17:55     ` Jing Xue
2007-09-05 17:35   ` Steven Grimm
2007-09-05 18:28     ` Nix
2007-09-05 17:44 ` J. Bruce Fields
2007-09-05 18:46   ` Brandon Casey
2007-09-05 19:09     ` David Kastrup
2007-09-05 19:13       ` J. Bruce Fields
2007-09-05 19:43         ` David Kastrup
2007-09-05 19:20       ` Mike Hommey
2007-09-05 21:07 ` Alex Riesen

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