Intrepid Blog

At Codeyard we maintain a git and a subversion repository (which are synced with each other) for each of the >115 projects. The following graph shows the repositories plotted logarithmically according to the size of their whole server side subversion repository horizontally and their git repository size vertically:

To make more sense of the logarithmic nature of the graph, I’ve added three lines. The first (solid black) indicates the points of which both sizes are equal. The second course dashed line indicates the points of which the subversion repository is twice as large as the git repository. And lastly, the third finely dashed line indicates the points of which the subversion repository is five times as large as the git repository.

All projects for which git is less storage efficient, are smaller than 100Kb. The projects for which git is most storage efficient (up to even 6 times for a certain C# project), are all of medium size (10–100MB) and code-heavy. For the other projects, which are blob heavy (eg. images), git and subversion are close (git beats svn by ~20%).

One notable disadvantage of huge (someone committed a livecd image) git repositories, is an apparent memory usage of git repack even if I tell it not to with --window-memory.

Codeyard is a project of the RU to stimulate high school students for Free and Opensource Software in the Netherlands. Primarily they offer hosting and guidance for setting up projects. They also organize (great!) monthly meetings at the university where participants meet.

To motivate people to join, they organize a yearly award sponsored by Capgemini for the best project. With a friend, Noud, and my brother Bram we participated in their first year (2006) and won the award. This year, I have the honor to join as a member of the jury.

If you’re interested, you can visit one of the “community days”. The next one is this Saterday. There will also be a presentation by the people who cracked the “OV-kaart”, which should be quite interesting.

It was fun :).

Photo’s

SINP, a protocol that provides you with an identity that allows authentication and negotation of information linked with the identity as an identity document (basically the whole functionality put into a way too short sentence), which was deviced by Noud, Bram and me, has won the Capgemini Opensource Award! Lots of rejoice! You will hear more about this :-).