Yearly Archives: 2014

Talk at RMLL

vignette_rmll_125x125I have participated in Rencontres Mondiales du Logiciel Libre in Montpellier and presented a short talk entitled “Crowdfunding and Free / Open Source Software”. Full description can be found here, and the the slides here.

Audience didn’t have previous experience with crowdfunding campaigns in their own projects. The questions were centered around legal and fiscal aspects of the process – I will try to find or create an informational resource explaining them.

Update: You can see the full video of my short talk here.

Sojourner Maintainer

fosdemI am the new maintainer of the sojourner app – a conference schedule viewer for Nokia N900 phone. Thanks to the original author Will Thompson for writing such wonderful piece of software that lets me fully enjoy FOSDEM since 2012.

I have added support for downloading schedule via HTTPS and improved event description display. It is currently possible to browse FOSDEM 2014 schedule and it should be ready for 2015 edition or other upcoming events.

The code can be found on Github. The latest binary package can be found in extras-devel repository or downloaded directly from Github release.

Many websites have recently started showing round profile pictures. I imagine this fad is a continuation of a process to find an ultimate shape. After rectangle and square, now we have a circle. In my opinion this went too far – people’s faces in circles just look stupid.

XWiki + Jetty + Apache

XWikiInitially I was running XWiki on Tomcat web server, which was communicating with HTTPD using AJP protocol, because it worked better with a subdomain. However, since there is limited memory on my VPS and the application seemed a bit slow and I was getting annoying HTTP 503 errors sometimes, I started looking for alternatives.

Jetty is a lightweight Java servlet container known for low memory footprint, so I decided to give it a go. Below is the configuration that worked for me.


I run jetty with default Debian configuration, except for memory – I have set 300M heap and 128M permgen size.


Default configuration.


I like to run my applications in separate subdomains, so I created a file in /etc/apache2 for xwiki subdomain. Here are its most critical parts.


Now XWiki runs noticeably faster than in previous configuration. I was setting it up few months ago, so perhaps I missed some configuration details. If my tips do not work for you, please let me know.