git@vger.kernel.org mailing list mirror (one of many)
 help / color / mirror / code / Atom feed
From: Junio C Hamano <gitster@pobox.com>
To: Stefan Beller <sbeller@google.com>
Cc: "Ævar Arnfjörð Bjarmason" <avarab@gmail.com>,
	nico@cam.org, nix@esperi.org.uk, koreth@midwinter.com,
	"Linus Torvalds" <torvalds@linux-foundation.org>,
	git <git@vger.kernel.org>
Subject: Re: What's so special about objects/17/ ?
Date: Tue, 09 Oct 2018 10:03:31 +0900	[thread overview]
Message-ID: <xmqq4ldwszh8.fsf@gitster-ct.c.googlers.com> (raw)
In-Reply-To: <CAGZ79kZq3xtsbscrRFD8CSn++yrvdM6Ux+nkQ3AamgabXtPL+w@mail.gmail.com> (Stefan Beller's message of "Mon, 8 Oct 2018 12:17:40 -0700")

Stefan Beller <sbeller@google.com> writes:

> On Sun, Oct 7, 2018 at 1:07 PM Junio C Hamano <gitster@pobox.com> wrote:
>>
>> Junio C Hamano <gitster@pobox.com> writes:
>
>> > ...
>> > by general public and I do not have to explain the choice to the
>> > general public ;-)
>>
>> One thing that is more important than "why not 00 but 17?" to answer
>> is why a hardcoded number rather than a runtime random.  It is for
>> repeatability.
>
> Let's talk about repeatability vs statistics for a second. ;-)

Oh, I think I misled you by saying "more important".  

I didn't mean that it is more important to stick to the "use
hardcoded value" design decision than sticking to "use 17".  I've
made sure that everybody would understnd choosing any arbitrary byte
value other than "17" does not make the resulting Git any better nor
worse.  But discussing the design decision to use hardcoded value is
"more important", as that affects the balance between the end-user
experience and debuggability, and I tried to help those who do not
know the history by giving the fact that choice was made for the
latter and not for other hidden reasons, that those who would
propose to change the system may have to keep in mind.

Sorry if you mistook it as if I were saying that it is important to
keep the design to use a hardcoded byte value.  That wasn't what the
message was about.

  reply	other threads:[~2018-10-09  1:03 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                 ` 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 [this message]
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

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

  List information: http://vger.kernel.org/majordomo-info.html

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=xmqq4ldwszh8.fsf@gitster-ct.c.googlers.com \
    --to=gitster@pobox.com \
    --cc=avarab@gmail.com \
    --cc=git@vger.kernel.org \
    --cc=koreth@midwinter.com \
    --cc=nico@cam.org \
    --cc=nix@esperi.org.uk \
    --cc=sbeller@google.com \
    --cc=torvalds@linux-foundation.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
Code repositories for project(s) associated with this public inbox

	https://80x24.org/mirrors/git.git

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).