On Sat, 12 Oct 2013 17:59:03 +0200, Sönke Ludwig wrote:
(...)

That was some time ago though, so there may be some more performance
regressions by now. I'll add a CI based performance test in a while to
stabilize performance over time.

I have an Arch x86 Linode instance with a quite some spare resources if you need an extra CI node.