Re: VCS popularity

2015-04-01 Thread Matthieu Moy
David Lang da...@lang.hm writes:

 How many of these 8230 git repositories are duplicates of each other
 on github (to pick a specific example).

Hard to tell exactly, but OpenHub does a reasonably good job at
identifying real projects and mirrors of a master. Distributed systems
probably artificially get a higher count, but it's not as bad as each
fork of a project counts at least.

-- 
Matthieu Moy
http://www-verimag.imag.fr/~moy/
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Re: VCS popularity

2015-04-01 Thread Fredrik Gustafsson
On Wed, Apr 01, 2015 at 12:14:52AM +0200, Øyvind A. Holm wrote:
 On 1 April 2015 at 00:03, David Lang da...@lang.hm wrote:
  On Tue, 31 Mar 2015, Øyvind A. Holm wrote:
   openhub.net (formerly ohloh.net) has an interesting comparison of
   the number of public repositories on the net, based on searches of
   popular hosting services. This comparison is available at
   https://www.openhub.net/repositories/compare and shows an
   estimated market share between Bazaar, CVS, Git, Mercurial and
   Subversion.
  
   I've been monitoring this since 2014-08-05 to see how things were
   developing, and it's a good indication of the popularity of the
   various version control systems.
 
  number of repositories is an interesting datapoint, but activity in
  the repos would be far more interesting. There are a lot of repos of
  various types out there that haven't been touched for years.
 
 I do agree on that. Many repositories won't be deleted if they are
 converted to other VC systems to avoid breaking links and so on. What I
 found pretty interesting is the relative growth between the various
 systems. That's why I created the graphs that show creation of new
 repositories since August 2014 instead, for example
 
 https://github.com/sunny256/openhub-repositories/blob/master/graph/relative-zoom.svg

Github is serving every git repo as a svn repo too (or at least did). In
a talk they claimed to be the worlds biggest subversion host (if I
recall correctly).

However most people hosting on github doesn't do it to use svn but git.
Anyway, this mean that for every github git repo there's one svn repo.
Is github big enough to make the plots above invalid?

-- 
Fredrik Gustafsson

phone: +46 733-608274
e-mail: iv...@iveqy.com
website: http://www.iveqy.com
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Re: VCS popularity

2015-03-31 Thread Øyvind A . Holm
On 1 April 2015 at 00:03, David Lang da...@lang.hm wrote:
 On Tue, 31 Mar 2015, Øyvind A. Holm wrote:
  openhub.net (formerly ohloh.net) has an interesting comparison of
  the number of public repositories on the net, based on searches of
  popular hosting services. This comparison is available at
  https://www.openhub.net/repositories/compare and shows an
  estimated market share between Bazaar, CVS, Git, Mercurial and
  Subversion.
 
  I've been monitoring this since 2014-08-05 to see how things were
  developing, and it's a good indication of the popularity of the
  various version control systems.

 number of repositories is an interesting datapoint, but activity in
 the repos would be far more interesting. There are a lot of repos of
 various types out there that haven't been touched for years.

I do agree on that. Many repositories won't be deleted if they are
converted to other VC systems to avoid breaking links and so on. What I
found pretty interesting is the relative growth between the various
systems. That's why I created the graphs that show creation of new
repositories since August 2014 instead, for example

https://github.com/sunny256/openhub-repositories/blob/master/graph/relative-zoom.svg

- Øyvind
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Re: VCS popularity

2015-03-31 Thread David Lang

On Tue, 31 Mar 2015, Øyvind A. Holm wrote:


openhub.net (formerly ohloh.net) has an interesting comparison of the
number of public repositories on the net, based on searches of popular
hosting services. This comparison is available at
https://www.openhub.net/repositories/compare and shows an estimated
market share between Bazaar, CVS, Git, Mercurial and Subversion.

I've been monitoring this since 2014-08-05 to see how things were
developing, and it's a good indication of the popularity of the various
version control systems.

I've created a repository at
https://github.com/sunny256/openhub-repositories where the project
scripts and data files are stored, along with graphs in SVG format.

The graphs are pretty interesting:

https://github.com/sunny256/openhub-repositories/blob/master/graph/relative.svg
 Graphs of relative growth between the various version control systems.

https://github.com/sunny256/openhub-repositories/blob/master/graph/relative-zoom.svg
 Zoomed-in version of relative.svg. Git goes through the ceiling.

https://github.com/sunny256/openhub-repositories/blob/master/graph/repos.svg
 Total number of repositories.


number of repositories is an interesting datapoint, but activity in the repos 
would be far more interesting. There are a lot of repos of various types out 
there that haven't been touched for years.


David Lang

VCS popularity

2015-03-31 Thread Øyvind A . Holm
openhub.net (formerly ohloh.net) has an interesting comparison of the
number of public repositories on the net, based on searches of popular
hosting services. This comparison is available at
https://www.openhub.net/repositories/compare and shows an estimated
market share between Bazaar, CVS, Git, Mercurial and Subversion.

I've been monitoring this since 2014-08-05 to see how things were
developing, and it's a good indication of the popularity of the various
version control systems.

I've created a repository at
https://github.com/sunny256/openhub-repositories where the project
scripts and data files are stored, along with graphs in SVG format.

The graphs are pretty interesting:

https://github.com/sunny256/openhub-repositories/blob/master/graph/relative.svg
  Graphs of relative growth between the various version control systems.

https://github.com/sunny256/openhub-repositories/blob/master/graph/relative-zoom.svg
  Zoomed-in version of relative.svg. Git goes through the ceiling.

https://github.com/sunny256/openhub-repositories/blob/master/graph/repos.svg
  Total number of repositories.

- Øyvind
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Re: VCS popularity

2015-03-31 Thread Øyvind A . Holm
On 1 April 2015 at 00:20, Junio C Hamano gits...@pobox.com wrote:
 Øyvind A. Holm su...@sunbase.org writes:
  The graphs are pretty interesting:
 
  https://github.com/sunny256/openhub-repositories/blob/master/graph/relative.svg
Graphs of relative growth between the various version control systems.

 This plots us at a bit over 8000.

 What does this number mean, exactly?  Since 2014-08-01, the number of Git
 repositories Ohloh knows about has grown 8000-fold?  Or is it just 80-fold
 (8000%) growth?  Or 8000 more repositories were created?

Yes, relative.svg and relative-zoom.svg show the number of new repositories
found by Open Hub. To be specific, these are the numbers:

Bazaar: 75
CVS: 59
Git: 8230
Mercurial: 215
Subversion: 607

These numbers can of course be discussed, but as a source, I believe Open Hub
should be one of the more objective ones.

- Øyvind
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Re: VCS popularity

2015-03-31 Thread David Lang

On Wed, 1 Apr 2015, Øyvind A. Holm wrote:


On 1 April 2015 at 00:20, Junio C Hamano gits...@pobox.com wrote:

Øyvind A. Holm su...@sunbase.org writes:

The graphs are pretty interesting:

https://github.com/sunny256/openhub-repositories/blob/master/graph/relative.svg
  Graphs of relative growth between the various version control systems.


This plots us at a bit over 8000.

What does this number mean, exactly?  Since 2014-08-01, the number of Git
repositories Ohloh knows about has grown 8000-fold?  Or is it just 80-fold
(8000%) growth?  Or 8000 more repositories were created?


Yes, relative.svg and relative-zoom.svg show the number of new repositories
found by Open Hub. To be specific, these are the numbers:

Bazaar: 75
CVS: 59
Git: 8230
Mercurial: 215
Subversion: 607

These numbers can of course be discussed, but as a source, I believe Open Hub
should be one of the more objective ones.


How many of these 8230 git repositories are duplicates of each other on github 
(to pick a specific example).


the distributed nature of DVCS systems is going to inflate their count vs 
non-distributed VCS systems where there is only one copy.


I believe that Git encourages making personal copies public more than Mercurial 
does (with github being the extreme case)


David Lang