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Re: Overall costs to implement Subversion

From: Paul Koning <pkoning_at_equallogic.com>
Date: 2005-10-25 18:24:03 CEST

>>>>> "John" == John Chamberlain <John_Chamberlain@kofax.com> writes:

 John> Hello, I've been tasked with investigating dumping
 John> ClearCase/ClearQuest and going with Subversion. Past experience
 John> has me thinking this will not be easy and I could use some
 John> inside information on accomplishing this.

 John> Off the top of my head I have several questions.

 John> 1. Cost of Subversion... Licenses and Support

License: free. Support -- there's the list you posted to, which I
have found to be very helpful. There may well be support-for-a-fee
services too; I haven't looked.

Of course it has the open source benefits (you can fix it if all else

 John> 2. Frequency of updates.

 John> 3. Quality of Support

The list has been very helpful in my experience.

 John> 4. Code import from CC.

Good question. I know ClearCase can *import* CVS; can it export to
CVS format? If yes, then you can take that and run it through cvs2svn
(another excellent tool).

 John> 5. Bug tracking support

 John> 6. Implementation costs/time

So far I've gone through evaluation, test conversion (from a large CVS
repository) and update of our tools such as build procedures. It's
pretty painless. The "culturally compatible with CVS" property is
certainly helpful.

Then again, as I recall ClearCase is always, or mostly, a lock,
change, commit/unlock style system, unlike CVS. Subversion supposedly
can do either, but I only have experience with the CVS style. Having
used both I would recommend you go that way; operationally it's much
more convenient.

 John> Kofax has been running CC and CQ for about 4 year using
 John> distributed development world wide.

I'm looking at a centralized case, not a distributed one, so the
comments above don't cover distribution. But by way of a data point,
a bunch of open source projects, including very large ones like GCC,
either are using Subversion or will soon switch to it. So I would
conclude that the world-wide development aspect is well covered.


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Received on Tue Oct 25 18:50:39 2005

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