Harald Röck

Solution Architect in the Global Business Applications department.

Architect and lead developer of Eldis3, eurofunk’s operation control and management software.

Developer of Eldis3, eurofunk’s operation control and management software

Ph.D. Student of Prof. Christoph Kirsch in the field of operating systems and embedded software. Responsible for designing and implementing a Linux kernel patch that enables process shaping. Member of the JAviator project team to develop an unmanned quadrotor helicopter. Designed and implemented a new hybrid EDF-credit scheduler in the Xen hypervisor that supports multi-processor systems and dynamic load balancing. Taught several operating system classes.

Worked with the Google Chrome web browser team. Implemented a profiler and an inspecting interface for a new virtual machine that is embedded in the browser. The profiler in combination with the inspector provides online performance traces and it allows to inspect the dynamically generated and executed code

Solely ported the HotSpot Java virtual machine to run on the XEN hypervisor. The port is based on the kernel I worked with during the internship in 2008. I extended the kernel with a C++ run-time and the newlib C-library. The VM and the native code of the JDK were merged in order to integrate them into the kernel. The Java code of the JDK is loaded at runtime using a sibling file system from another Linux domain on the same machine.

Worked on porting Maxine, a meta-circular research Java virtual machine, to run on the XEN hypervisor. Mostly worked on the low level kernel: Implemented a block device driver to access the disk. Using this driver a Java version of the Ext2 file system was ported to the system. I extended the kernel to support suspend and resume, which also enabled check pointing and live migration of VMs. Additionally, I implemented a new thread scheduler with CPU local thread queues, and a new scheduler interface wh

Intern in the Dynamic Optimization area with Joshua Auerbach and David F. Bacon at the IBM T.J. Watson Research Center in Hawthorne, New York. Working on language and kernel support for real-time control of autonomous helicopters.