Re: looking for "market share" analysis of SCMs.

From: Daniel Barkalow <barkalow@iabervon.org>
Date: May 21, 2008, 00:24 UTC
Message-ID: <alpine.LNX.1.00.0805202001170.19665@iabervon.org>
In-Reply-To: <bd6139dc0805201525r22ba7398g6f341f89ae699b57@mail.gmail.com>

On Wed, 21 May 2008, Sverre Rabbelier wrote:

Show 14 quoted lines

> On Wed, May 21, 2008 at 12:07 AM, Daniel Barkalow <barkalow@iabervon.org> wrote:
> > Doing it as a percentage is kind of odd; it demonstrates that using
> > version control is decreasing in popularity as more and more people who
> > don't use version control submit votes. All of the version control systems
> > show an upward trend in number of users, but most of them are not growing
> > as much as the market is shrinking. Unfortunately, there doesn't seem to
> > be a way to get the people who use each of them as a percentage of people
> > who use any of them, which is what you want for "market share".
> 
> Ah, you are right, I didn't analyse the graph enough, I thought
> percent would show what you described above, obviously it doesn't
> though as the values don't add up to 100%. Even so, I think this is a
> better graph:
> http://tinyurl.com/4hu2cn

Yeah, that's the one I thought was informative.

Show 9 quoted lines

> Since it shows users that regularly use the package, instead of user
> that have it installed. Considering that these days distro's have a
> lot of stuff pre-installed if you go with the "coders packages" the
> usage votes give a better picture than looking at who has it installed
> (which includes people that don't use the package at all). That graph
> shows that in the end of 2006 SVN became more popular than CVS,
> whereas the one from Teemu (http://tinyurl.com/4vpqzg) does not show
> that, probalby because a lot of people have it installed, but don't
> use it.

Yeah, also a lot of people have CVS installed from when they used it, but they not use something different, but haven't built new computers without it.

> It would be interesting if we could link the grow spurts from
> http://tinyurl.com/4hu2cn to programming-related events, something
> that might have caused people to suddenly use a VCS a lot more (for
> example the one in CVS's line from 05-2007 till 07-2007).

I think that around 05-2007, a lot more people started voting, largely non-coders, but also coders. In the percentage, there's a sharp drop where that sharp rise is.

	-Daniel
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