I guess his blog is down today - cached [here](http://webcache.googleusercontent.com/search?q=cache:yEj-3yx8rRkJ:0pointer.de/blog/projects/resources.html&hl=en&gl=us&strip=1) (and similar info [here](http://www.freedesktop.org/software/systemd/man/systemd.resource-control.html))