This is really interesting, but it seems like its the same information floating around on different blogs. If I didnt know better I'd assume they copy each other regarding this.

All lack some real and more thorough testing, they include that simple example, perhaps its enough, but its a bit light on the facts to get me to try it.

Would be interesting to know how this works in virtual environments, can I set this inside a VPS, or would the main kernel in the dom0(xen-host-stuff) override this?

Are there any sideeffects?