Biographical Sketch: Working at IBM Research and Development in Boeblingen - Germany, Christian is a Linux professional with a passion for performance. Improving Linux performance in manifold ways is his daily business at IBM since 2004. Many performance improvements as well as development activities for KVM on embedded PowerPC and System zEnterprise found his technical skill. He feels at home in all kind of in depth performance evluations from customer cases to new HW/SW features, but also in various communications levels from kernel development discussions to management summaries.