Cost of Ownership:
How much does cost to use Perforce? That depends on how much time you current use with version control.
If used it 100%, which is impossible it would cost 36 cents/hour the first year and only 8 cents/hour after that.

Where to get it:

http://www.perforce.com/perforce/loadprog.html is the link to download the server and clients. You don't pay anything to start using Perforce. When you start using it with more then 2 people, you will have to get an evaluation license from Perforce.
wget http://perforce.com/perforce/doc.081/manuals/cmdref/cmdref.pdf
Mac Notes: http://kb.perforce.com/HardwareOsNe..rkReference/OperatingSystems/Mac/Pe...

Where elese to put this:
For those 1500 forced syncs of a workspace containing 43,000 files, we had:
P4D --> P4P: 4.8 Million packets totalling 6.5GB of traffic.
P4P --> P4D: 3.3 Million packets totalling 1.7GB of traffic.
Not insignificant. None of this is due to archive files since all the files were
cached.

The way traffic was measured was to set the following IP chains on the proxy
server:

iptables -A P4 -p tcp iptables -A OUTPUT -p tcp -m tcp -s -d
--dport 1666 -j P4 iptables -A INPUT -p tcp -m tcp -d
-s --sport 1666 -j P4
(just replace and with their respective IP
addresses).
They just let traffic through. However a counter per rule will now be
maintained. Use:
iptables -L -v to view the counters.
iptables -Z P4 to zero the P4 counter.

So there you have it: a method to measure the impact of the traffic between a
server and a proxy excluding the file archive data.

- Guillaume
Perforce links:
http://public.perforce.com/wiki/Perforce_MediaWiki_extension#p4graph
http://public.perforce.com:8080/@rev1=head@//public/perforce/faq/build.html
http://www.ravenbrook.com/project/p4dti/master/test/
http://www.ravenbrook.com/project/p4dti/

Mac Links:
P4 Cocoa GUI
Using launchd to start P4 on Mac 10.4+

Perforce Defect Integration
http://www.ravenbrook.com/doc/2003/02/24/requirements-and-change/

Mantis Integration:
http://www.mantisbt.org/bugs/view.php?id=3758

TFS comparison link:
http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=543517&SiteID=1

http://chanson.livejournal.com/2004/02/15/ Click on recent entries, he says things about SVN and Apple.

Negative Links:
http://weblog.masukomi.org/2007/8/31/dear-perforce-fuck-you
http://reddit.com/r/programming/info/2n4qo/comments/