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From: Steven Grimm <koreth@midwinter.com>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Junio C Hamano <gitster@pobox.com>,
	Johannes Schindelin <Johannes.Schindelin@gmx.de>,
	Nicolas Pitre <nico@cam.org>, Nix <nix@esperi.org.uk>,
	Git Mailing List <git@vger.kernel.org>
Subject: Re: People unaware of the importance of "git gc"?
Date: Thu, 06 Sep 2007 11:29:07 -0700	[thread overview]
Message-ID: <46E046F3.9000703@midwinter.com> (raw)
In-Reply-To: <alpine.LFD.0.999.0709061906010.5626@evo.linux-foundation.org>

Linus Torvalds wrote:
> IOW, if you get lots of small incrmental packs, after a while you really 
> *do* need to do "git gc" to get the real pack generated.
>   

I wonder if it makes sense to repack just the small incremental packs 
into a large (but still incremental) pack, rather than repacking the 
entire repository. Presumably that would be a lot faster than a full 
"git gc", while still giving you reasonably good packing (at least, if 
the threshold is set to a hugh enough number of small packs) and keeping 
things fast. That could run as a second phase of "git gc --auto" -- it 
should be quick enough to not be too terribly annoying since we're not 
running it in the background.

Yeah, if you use the same repo for a long time, you'll accumulate a ton 
of medium-sized packs this way, but (a) that's much better than the 
situation we have today, and (b) it puts off the performance degradation 
for long enough that it becomes more reasonable to expect people to find 
out about running the full "git gc" in the meantime, or for git to 
further evolve to not need it.

-Steve

  reply	other threads:[~2007-09-06 18:29 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 [this message]
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                 ` People unaware of the importance of "git gc"? Shawn O. Pearce
2007-09-07 10:12                 ` 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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