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From: =?UTF-8?B?Q2hyaXMg4oCcS3dwb2xza2HigJ0gV2Fycmljaw==?= <kwpolska@gmail.com>
Date: Sun, 16 Jun 2013 15:30:05 +0200
Subject: Re: Version Control Software
To: Chris Angelico <rosuav@gmail.com>
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On Sun, Jun 16, 2013 at 1:14 AM, Chris Angelico <rosuav@gmail.com> wrote:
> Hmm. ~/cpython/.hg is 200MB+, but ~/pike/.git is only 86MB. Does
> Mercurial compress its content? A tar.gz of each comes down, but only
> to ~170MB and ~75MB respectively, so I'm guessing the bulk of it is
> already compressed. But 200MB for cpython seems like a lot.

Next time, do a more fair comparison.

I created an empty git and hg repository, and created a file promptly
named =E2=80=9Cfile=E2=80=9D with DIGIT ONE (0x31; UTF-8/ASCII=E2=80=93enco=
ded) and commited
it with =E2=80=9Cc1=E2=80=9D as the message, then I turned it into =E2=80=
=9C12=E2=80=9D and commited
as =E2=80=9Cc2=E2=80=9D and did this one more time, making the file =E2=80=
=9C123=E2=80=9D at commit
named =E2=80=9Cc3=E2=80=9D.

[kwpolska@kwpolska-lin .hg@default]% cat * */* */*/* 2>/dev/null | wc -c
1481
[kwpolska@kwpolska-lin .git@master]% cat * */* */*/* */*/*/* 2>/dev/null | =
wc -c
16860 =E2=86=90 WRONG!

There is just one problem with this: an empty git repository starts at
15216 bytes, due to some sample hooks.  Let=E2=80=99s remove them and try
again:

[kwpolska@kwpolska-lin .git@master]% rm hooks/*
[kwpolska@kwpolska-lin .git@master]% cat * */* */*/* */*/*/* */*/*/*
2>/dev/null | wc -c
2499

which is a much more sane number.  This includes a config file (in the
ini/configparser format) and such.  According to my maths skils (or
rather zsh=E2=80=99s skills), new commits are responsible for 1644 bytes in
the git repo and 1391 bytes in the hg repo.

(I=E2=80=99m using wc -c to count the bytes in all files there are.  du is
unaccurate with files smaller than 4096 bytes.)

--
Kwpolska <http://kwpolska.tk> | GPG KEY: 5EAAEA16
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